Indenyl and indacenyl ligands in homo and heterobimetallic complexes
Identifieur interne : 003561 ( Istex/Corpus ); précédent : 003560; suivant : 003562Indenyl and indacenyl ligands in homo and heterobimetallic complexes
Auteurs : Chiara Bonifaci ; Alberto Ceccon ; Alessandro Gambaro ; Francesco Manoli ; Laura Mantovani ; Paolo Ganis ; Saverio Santi ; Alfonso VenzoSource :
- Journal of Organometallic Chemistry [ 0022-328X ] ; 1997.
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Abstract
Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)3 and RhL2 [L2=COD, NBD, (CO)2], anti coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure syn and anti bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of syn and anti homobimetallic s-indacene-diide-[RhL2]2 complexes.
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DOI: 10.1016/S0022-328X(97)00737-7
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ISTEX:66F44E2D188FF8F6F44D6F0F1A3674F821C84762Le document en format XML
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Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</mods:affiliation></affiliation></author><author><name sortKey="Gambaro, Alessandro" sort="Gambaro, Alessandro" uniqKey="Gambaro A" first="Alessandro" last="Gambaro">Alessandro Gambaro</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Manoli, Francesco" sort="Manoli, Francesco" uniqKey="Manoli F" first="Francesco" last="Manoli">Francesco Manoli</name><affiliation><mods:affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Mantovani, Laura" sort="Mantovani, Laura" uniqKey="Mantovani L" first="Laura" last="Mantovani">Laura Mantovani</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Ganis, Paolo" sort="Ganis, Paolo" uniqKey="Ganis P" first="Paolo" last="Ganis">Paolo Ganis</name><affiliation><mods:affiliation>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</mods:affiliation></affiliation></author><author><name sortKey="Santi, Saverio" sort="Santi, Saverio" uniqKey="Santi S" first="Saverio" last="Santi">Saverio Santi</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Venzo, Alfonso" sort="Venzo, Alfonso" uniqKey="Venzo A" first="Alfonso" last="Venzo">Alfonso Venzo</name><affiliation><mods:affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:66F44E2D188FF8F6F44D6F0F1A3674F821C84762</idno><date when="1998" year="1998">1998</date><idno type="doi">10.1016/S0022-328X(97)00737-7</idno><idno type="url">https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">003561</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title><author><name sortKey="Bonifaci, Chiara" sort="Bonifaci, Chiara" uniqKey="Bonifaci C" first="Chiara" last="Bonifaci">Chiara Bonifaci</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Ceccon, Alberto" sort="Ceccon, Alberto" uniqKey="Ceccon A" first="Alberto" last="Ceccon">Alberto Ceccon</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation><affiliation><mods:affiliation>Corresponding author. Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</mods:affiliation></affiliation></author><author><name sortKey="Gambaro, Alessandro" sort="Gambaro, Alessandro" uniqKey="Gambaro A" first="Alessandro" last="Gambaro">Alessandro Gambaro</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Manoli, Francesco" sort="Manoli, Francesco" uniqKey="Manoli F" first="Francesco" last="Manoli">Francesco Manoli</name><affiliation><mods:affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Mantovani, Laura" sort="Mantovani, Laura" uniqKey="Mantovani L" first="Laura" last="Mantovani">Laura Mantovani</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Ganis, Paolo" sort="Ganis, Paolo" uniqKey="Ganis P" first="Paolo" last="Ganis">Paolo Ganis</name><affiliation><mods:affiliation>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</mods:affiliation></affiliation></author><author><name sortKey="Santi, Saverio" sort="Santi, Saverio" uniqKey="Santi S" first="Saverio" last="Santi">Saverio Santi</name><affiliation><mods:affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author><author><name sortKey="Venzo, Alfonso" sort="Venzo, Alfonso" uniqKey="Venzo A" first="Alfonso" last="Venzo">Alfonso Venzo</name><affiliation><mods:affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Organometallic Chemistry</title><title level="j" type="abbrev">JOM</title><idno type="ISSN">0022-328X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1997">1997</date><biblScope unit="volume">557</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="97">97</biblScope><biblScope unit="page" to="109">109</biblScope></imprint><idno type="ISSN">0022-328X</idno></series><idno type="istex">66F44E2D188FF8F6F44D6F0F1A3674F821C84762</idno><idno type="DOI">10.1016/S0022-328X(97)00737-7</idno><idno type="PII">S0022-328X(97)00737-7</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-328X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chromium</term><term>Indacenyl</term><term>Indenyl</term><term>Rhodium</term><term>Syn and anti structures</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)3 and RhL2 [L2=COD, NBD, (CO)2], anti coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure syn and anti bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of syn and anti homobimetallic s-indacene-diide-[RhL2]2 complexes.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Chiara Bonifaci</name><affiliations><json:string>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item><json:item><name>Alberto Ceccon</name><affiliations><json:string>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</json:string><json:string>Corresponding author. Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</json:string></affiliations></json:item><json:item><name>Alessandro Gambaro</name><affiliations><json:string>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item><json:item><name>Francesco Manoli</name><affiliations><json:string>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item><json:item><name>Laura Mantovani</name><affiliations><json:string>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item><json:item><name>Paolo Ganis</name><affiliations><json:string>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</json:string></affiliations></json:item><json:item><name>Saverio Santi</name><affiliations><json:string>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item><json:item><name>Alfonso Venzo</name><affiliations><json:string>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Chromium</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Rhodium</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Indenyl</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Indacenyl</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Syn and anti structures</value></json:item></subject><language><json:string>eng</json:string></language><abstract>Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)3 and RhL2 [L2=COD, NBD, (CO)2], anti coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure syn and anti bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of syn and anti homobimetallic s-indacene-diide-[RhL2]2 complexes.</abstract><qualityIndicators><score>6.728</score><pdfVersion>1.2</pdfVersion><pdfPageSize>590 x 784 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>5</keywordCount><abstractCharCount>936</abstractCharCount><pdfWordCount>5443</pdfWordCount><pdfCharCount>33245</pdfCharCount><pdfPageCount>13</pdfPageCount><abstractWordCount>144</abstractWordCount></qualityIndicators><title>Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title><pii><json:string>S0022-328X(97)00737-7</json:string></pii><genre><json:string>research-article</json:string></genre><host><volume>557</volume><pii><json:string>S0022-328X(00)X0079-4</json:string></pii><pages><last>109</last><first>97</first></pages><issn><json:string>0022-328X</json:string></issn><issue>1</issue><genre><json:string>Journal</json:string></genre><language><json:string>unknown</json:string></language><title>Journal of Organometallic Chemistry</title><publicationDate>1998</publicationDate></host><categories><wos><json:string>CHEMISTRY, INORGANIC & NUCLEAR</json:string><json:string>CHEMISTRY, ORGANIC</json:string></wos></categories><publicationDate>1997</publicationDate><copyrightDate>1998</copyrightDate><doi><json:string>10.1016/S0022-328X(97)00737-7</json:string></doi><id>66F44E2D188FF8F6F44D6F0F1A3674F821C84762</id><score>1</score><fulltext><json:item><original>true</original><mimetype>application/pdf</mimetype><extension>pdf</extension><uri>https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/fulltext/pdf</uri></json:item><json:item><original>true</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/fulltext/txt</uri></json:item><json:item><original>false</original><mimetype>application/zip</mimetype><extension>zip</extension><uri>https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1998</date></publicationStmt><notesStmt><note type="content">Scheme. 1: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 2: Heterobimetallic complexes of the phenylcyclopentadienyl ligand.</note><note type="content">Scheme. 3: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 4: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 5: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 6: Anti and syn isomeric couples of some Cr(CO)3-indenyl-RhL2 complexes.</note><note type="content">Fig. 1: A perspective view of the molecules of indenyl-Rh(NBD), 7, syn-[Cr(CO)3-indenyl-Rh(NBD)], 2, and anti-[Cr(CO)3-indenyl-Rh(NBD)], 5.</note><note type="content">Scheme. 7: Some 103Rh-NMR data on mono- and heterobimetallic complexes.</note><note type="content">Scheme. 8: Proposed mechanism of anti-5→syn-2 isomerization (Rh*Rh(NBD)).</note><note type="content">Scheme. 9: Proposed η1-intermediate in the exchange reaction of CO’s by diolefins in anti-[Cr(CO)3-indenyl-Rh(CO)2], 3.</note><note type="content">Scheme. 10: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Fig. 2: ○, Monomer disappearance in the methyl propiolate cyclotrimerization reaction catalized by Ind*-Rh(COD); ▵, Ind*-Rh(CO)2; •, anti-[Cr(CO)3-Ind*-Rh(COD)] and ▴, anti-[Cr(CO)3-Ind*-Rh(CO)2].</note><note type="content">Fig. 3: •, Monomer disappearance in the methyl propiolate cyclotrimerization reaction catalyzed by anti-[Cr(CO)3-Ind*-Rh(COD)] and ◊, anti-[Cr(CO)3-Ind-Rh(COD)].</note><note type="content">Scheme. 11: Proposed mechanism for the cyclotrimerization reaction of dimethyl acetylenedicarboxylate catalyzed by anti-[Cr(CO)3-Ind*-Rh(CO)2].</note><note type="content">Scheme. 12: Two-step synthesis of homobimetallic complexes of the s-indacene-diide ligand.</note><note type="content">Scheme. 13: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 14: NO CAPTION (SCREENS PLEASE DELETE).</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title><author><persName><forename type="first">Chiara</forename><surname>Bonifaci</surname></persName><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation></author><author><persName><forename type="first">Alberto</forename><surname>Ceccon</surname></persName><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><affiliation>Corresponding author. Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</affiliation></author><author><persName><forename type="first">Alessandro</forename><surname>Gambaro</surname></persName><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation></author><author><persName><forename type="first">Francesco</forename><surname>Manoli</surname></persName><affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</affiliation></author><author><persName><forename type="first">Laura</forename><surname>Mantovani</surname></persName><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation></author><author><persName><forename type="first">Paolo</forename><surname>Ganis</surname></persName><affiliation>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</affiliation></author><author><persName><forename type="first">Saverio</forename><surname>Santi</surname></persName><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation></author><author><persName><forename type="first">Alfonso</forename><surname>Venzo</surname></persName><affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</affiliation></author></analytic><monogr><title level="j">Journal of Organometallic Chemistry</title><title level="j" type="abbrev">JOM</title><idno type="pISSN">0022-328X</idno><idno type="PII">S0022-328X(00)X0079-4</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1997"></date><biblScope unit="volume">557</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="97">97</biblScope><biblScope unit="page" to="109">109</biblScope></imprint></monogr><idno type="istex">66F44E2D188FF8F6F44D6F0F1A3674F821C84762</idno><idno type="DOI">10.1016/S0022-328X(97)00737-7</idno><idno type="PII">S0022-328X(97)00737-7</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1998</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)3 and RhL2 [L2=COD, NBD, (CO)2], anti coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure syn and anti bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of syn and anti homobimetallic s-indacene-diide-[RhL2]2 complexes.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>Chromium</term></item><item><term>Rhodium</term></item><item><term>Indenyl</term></item><item><term>Indacenyl</term></item><item><term>Syn and anti structures</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1997-06-16">Received</change><change when="1997">Published</change></revisionDesc></teiHeader></istex:fulltextTEI></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: ce:floats; body; tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"><istex:entity SYSTEM="sc1" NDATA="IMAGE" name="sc1"></istex:entity><istex:entity SYSTEM="sc2" NDATA="IMAGE" name="sc2"></istex:entity><istex:entity SYSTEM="sc3" NDATA="IMAGE" name="sc3"></istex:entity><istex:entity SYSTEM="fx1" NDATA="IMAGE" name="fx1"></istex:entity><istex:entity SYSTEM="sc4" NDATA="IMAGE" name="sc4"></istex:entity><istex:entity SYSTEM="sc5" NDATA="IMAGE" name="sc5"></istex:entity><istex:entity SYSTEM="sc6" NDATA="IMAGE" name="sc6"></istex:entity><istex:entity SYSTEM="fx2" NDATA="IMAGE" name="fx2"></istex:entity><istex:entity SYSTEM="gr1" NDATA="IMAGE" name="gr1"></istex:entity><istex:entity SYSTEM="sc7" NDATA="IMAGE" name="sc7"></istex:entity><istex:entity SYSTEM="sc8" NDATA="IMAGE" name="sc8"></istex:entity><istex:entity SYSTEM="sc9" NDATA="IMAGE" name="sc9"></istex:entity><istex:entity SYSTEM="sc10" NDATA="IMAGE" name="sc10"></istex:entity><istex:entity SYSTEM="gr2" NDATA="IMAGE" name="gr2"></istex:entity><istex:entity SYSTEM="gr3" NDATA="IMAGE" name="gr3"></istex:entity><istex:entity SYSTEM="sc11" NDATA="IMAGE" name="sc11"></istex:entity><istex:entity SYSTEM="sc12" NDATA="IMAGE" name="sc12"></istex:entity><istex:entity SYSTEM="sc13" NDATA="IMAGE" name="sc13"></istex:entity><istex:entity SYSTEM="sc14" NDATA="IMAGE" name="sc14"></istex:entity></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla" xml:lang="en"><item-info><jid>JOM</jid><aid>7608</aid><ce:pii>S0022-328X(97)00737-7</ce:pii><ce:doi>10.1016/S0022-328X(97)00737-7</ce:doi><ce:copyright year="1998" type="full-transfer">Elsevier Science S.A.</ce:copyright></item-info><head><ce:title>Indenyl and indacenyl ligands in homo and heterobimetallic complexes</ce:title><ce:author-group><ce:author><ce:given-name>Chiara</ce:given-name><ce:surname>Bonifaci</ce:surname><ce:cross-ref refid="AFF1">a</ce:cross-ref></ce:author><ce:author><ce:given-name>Alberto</ce:given-name><ce:surname>Ceccon</ce:surname><ce:cross-ref refid="AFF1">a</ce:cross-ref><ce:cross-ref refid="CORR1">*</ce:cross-ref></ce:author><ce:author><ce:given-name>Alessandro</ce:given-name><ce:surname>Gambaro</ce:surname><ce:cross-ref refid="AFF1">a</ce:cross-ref></ce:author><ce:author><ce:given-name>Francesco</ce:given-name><ce:surname>Manoli</ce:surname><ce:cross-ref refid="AFF3">c</ce:cross-ref></ce:author><ce:author><ce:given-name>Laura</ce:given-name><ce:surname>Mantovani</ce:surname><ce:cross-ref refid="AFF1">a</ce:cross-ref></ce:author><ce:author><ce:given-name>Paolo</ce:given-name><ce:surname>Ganis</ce:surname><ce:cross-ref refid="AFF2">b</ce:cross-ref></ce:author><ce:author><ce:given-name>Saverio</ce:given-name><ce:surname>Santi</ce:surname><ce:cross-ref refid="AFF1">a</ce:cross-ref></ce:author><ce:author><ce:given-name>Alfonso</ce:given-name><ce:surname>Venzo</ce:surname><ce:cross-ref refid="AFF3">c</ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</ce:textfn></ce:affiliation><ce:affiliation id="AFF3"><ce:label>c</ce:label><ce:textfn>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</ce:textfn></ce:affiliation><ce:correspondence id="CORR1"><ce:label>*</ce:label><ce:text>Corresponding author. Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</ce:text></ce:correspondence></ce:author-group><ce:date-received day="16" month="6" year="1997"></ce:date-received><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)<ce:inf>3</ce:inf> and RhL<ce:inf>2</ce:inf> [L<ce:inf>2</ce:inf>=COD, NBD, (CO)<ce:inf>2</ce:inf>], <ce:italic>anti</ce:italic> coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure <ce:italic>syn</ce:italic> and <ce:italic>anti</ce:italic> bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of <ce:italic>syn</ce:italic> and <ce:italic>anti</ce:italic> homobimetallic <ce:italic>s</ce:italic>-indacene-diide-[RhL<ce:inf>2</ce:inf>]<ce:inf>2</ce:inf> complexes.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords class="keyword"><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>Chromium</ce:text></ce:keyword><ce:keyword><ce:text>Rhodium</ce:text></ce:keyword><ce:keyword><ce:text>Indenyl</ce:text></ce:keyword><ce:keyword><ce:text>Indacenyl</ce:text></ce:keyword><ce:keyword><ce:text><ce:italic>Syn</ce:italic> and <ce:italic>anti</ce:italic> structures</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>Indenyl and indacenyl ligands in homo and heterobimetallic complexes</title></titleInfo><name type="personal"><namePart type="given">Chiara</namePart><namePart type="family">Bonifaci</namePart><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alberto</namePart><namePart type="family">Ceccon</namePart><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><affiliation>Corresponding author. Fax: +39 49 8275135, e-mail: ceccon@pdchfi.chfi.unipd.it</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alessandro</namePart><namePart type="family">Gambaro</namePart><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Francesco</namePart><namePart type="family">Manoli</namePart><affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Laura</namePart><namePart type="family">Mantovani</namePart><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Paolo</namePart><namePart type="family">Ganis</namePart><affiliation>Dipartimento Chimico, Università di Napoli, Via Mezzocannone 4, 80134 Napoli, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Saverio</namePart><namePart type="family">Santi</namePart><affiliation>Dipartimento di Chimica Fisica, Università di Padova, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alfonso</namePart><namePart type="family">Venzo</namePart><affiliation>CNR, Centro di Studio sugli Stati Molecolari Radicalici ed Eccitati, Via Loredan 2, 35131 Padova, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1997</dateIssued><dateCaptured encoding="w3cdtf">1997-06-16</dateCaptured><copyrightDate encoding="w3cdtf">1998</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Metal atoms that are held in close proximity exhibit unique properties and many ligands have been tested for their ability to coordinate two or more transition metals in an effort to search for new chemical and physical properties. During the last decade, extensive studies have been conducted on a series of heterobimetallic indenyl complexes of Cr(0) and Rh(I). The mutual effect of the two metal units, viz. Cr(CO)3 and RhL2 [L2=COD, NBD, (CO)2], anti coordinated to the same planar bridging ligand influences both the reactivity and the catalytic activity of the two metals. Some insight into the dependence of the mutual effects on the stereochemistry of the bimetallic complexes may be provided by the availability of pairs of pure syn and anti bimetallic stereoisomers of rigid bridging ligands. Reported here are the preliminary results concerning the synthesis of syn and anti homobimetallic s-indacene-diide-[RhL2]2 complexes.</abstract><note type="content">Scheme. 1: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 2: Heterobimetallic complexes of the phenylcyclopentadienyl ligand.</note><note type="content">Scheme. 3: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 4: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 5: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 6: Anti and syn isomeric couples of some Cr(CO)3-indenyl-RhL2 complexes.</note><note type="content">Fig. 1: A perspective view of the molecules of indenyl-Rh(NBD), 7, syn-[Cr(CO)3-indenyl-Rh(NBD)], 2, and anti-[Cr(CO)3-indenyl-Rh(NBD)], 5.</note><note type="content">Scheme. 7: Some 103Rh-NMR data on mono- and heterobimetallic complexes.</note><note type="content">Scheme. 8: Proposed mechanism of anti-5→syn-2 isomerization (Rh*Rh(NBD)).</note><note type="content">Scheme. 9: Proposed η1-intermediate in the exchange reaction of CO’s by diolefins in anti-[Cr(CO)3-indenyl-Rh(CO)2], 3.</note><note type="content">Scheme. 10: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Fig. 2: ○, Monomer disappearance in the methyl propiolate cyclotrimerization reaction catalized by Ind*-Rh(COD); ▵, Ind*-Rh(CO)2; •, anti-[Cr(CO)3-Ind*-Rh(COD)] and ▴, anti-[Cr(CO)3-Ind*-Rh(CO)2].</note><note type="content">Fig. 3: •, Monomer disappearance in the methyl propiolate cyclotrimerization reaction catalyzed by anti-[Cr(CO)3-Ind*-Rh(COD)] and ◊, anti-[Cr(CO)3-Ind-Rh(COD)].</note><note type="content">Scheme. 11: Proposed mechanism for the cyclotrimerization reaction of dimethyl acetylenedicarboxylate catalyzed by anti-[Cr(CO)3-Ind*-Rh(CO)2].</note><note type="content">Scheme. 12: Two-step synthesis of homobimetallic complexes of the s-indacene-diide ligand.</note><note type="content">Scheme. 13: NO CAPTION (SCREENS PLEASE DELETE).</note><note type="content">Scheme. 14: NO CAPTION (SCREENS PLEASE DELETE).</note><subject lang="en"><genre>Keywords</genre><topic>Chromium</topic><topic>Rhodium</topic><topic>Indenyl</topic><topic>Indacenyl</topic><topic>Syn and anti structures</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Organometallic Chemistry</title></titleInfo><titleInfo type="abbreviated"><title>JOM</title></titleInfo><genre type="Journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">19980420</dateIssued></originInfo><identifier type="ISSN">0022-328X</identifier><identifier type="PII">S0022-328X(00)X0079-4</identifier><part><date>19980420</date><detail type="volume"><number>557</number><caption>vol.</caption></detail><detail type="issue"><number>1</number><caption>no.</caption></detail><extent unit="issue pages"><start>1</start><end>156</end></extent><extent unit="pages"><start>97</start><end>109</end></extent></part></relatedItem><identifier type="istex">66F44E2D188FF8F6F44D6F0F1A3674F821C84762</identifier><identifier type="DOI">10.1016/S0022-328X(97)00737-7</identifier><identifier type="PII">S0022-328X(97)00737-7</identifier><accessCondition type="use and reproduction" contentType="">© 1998Elsevier Science S.A.</accessCondition><recordInfo><recordContentSource>ELSEVIER</recordContentSource><recordOrigin>Elsevier Science S.A., ©1998</recordOrigin></recordInfo></mods></metadata><enrichments><istex:catWosTEI uri="https://api.istex.fr/document/66F44E2D188FF8F6F44D6F0F1A3674F821C84762/enrichments/catWos"><teiHeader><profileDesc><textClass><classCode scheme="WOS">CHEMISTRY, INORGANIC & NUCLEAR</classCode><classCode scheme="WOS">CHEMISTRY, ORGANIC</classCode></textClass></profileDesc></teiHeader></istex:catWosTEI></enrichments><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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