Heterobimetallic catechol-phosphine complexes with palladium and a group-13 element: structural flexibility and dynamics.
Identifieur interne : 000169 ( Main/Exploration ); précédent : 000168; suivant : 000170Heterobimetallic catechol-phosphine complexes with palladium and a group-13 element: structural flexibility and dynamics.
Auteurs : RBID : pubmed:24802543Abstract
Group-13 metal acetylacetonates [M(acac)3] (M = Al, Ga, In) or Al(OiPr)3 react with a complex [Pd(catphosH)2] that may act as chelating ligand towards a second metal, or with a mixture of catechol phosphine (catphosH2) and [PdCl2(cod)], to give heterometallic complexes featuring either dinuclear M(catphos)2Pd or trinuclear M{(catphos)2Pd}2 motifs. Characterisation of the products by crystallographic and solution NMR studies gives insight into the structural diversity and flexibility of the coordination environments of the group-13 elements and their impact on the stability of the multinuclear complexes. The results indicate that gallium and indium are the most suitable elements for the stabilisation of di- and trinuclear assemblies, respectively. Dynamic NMR spectroscopy allowed to follow the dynamic averaging of the coordination environments of the four distinguishable catechol phosphines in the indium complex [M{(catphos)2Pd}2]H. The results revealed that the isomerisation follows a complicated pathway involving several distinguishable proton transfer steps, and allowed to propose a mechanistic explanation for the observed isomerisation.
DOI: 10.1039/c4dt00785a
PubMed: 24802543
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Heterobimetallic catechol-phosphine complexes with palladium and a group-13 element: structural flexibility and dynamics.</title><author><name sortKey="Bauer, G" uniqKey="Bauer G">G Bauer</name><affiliation wicri:level="1"><nlm:affiliation>Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany. gudat@iac.uni-stuttgart.de.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart</wicri:regionArea><wicri:noRegion>70550 Stuttgart</wicri:noRegion></affiliation></author><author><name sortKey="Nieger, M" uniqKey="Nieger M">M Nieger</name></author><author><name sortKey="Gudat, D" uniqKey="Gudat D">D Gudat</name></author></titleStmt><publicationStmt><date when="2014">2014</date><idno type="doi">10.1039/c4dt00785a</idno><idno type="RBID">pubmed:24802543</idno><idno type="pmid">24802543</idno><idno type="wicri:Area/Main/Corpus">000016</idno><idno type="wicri:Area/Main/Curation">000016</idno><idno type="wicri:Area/Main/Exploration">000169</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Group-13 metal acetylacetonates [M(acac)3] (M = Al, Ga, In) or Al(OiPr)3 react with a complex [Pd(catphosH)2] that may act as chelating ligand towards a second metal, or with a mixture of catechol phosphine (catphosH2) and [PdCl2(cod)], to give heterometallic complexes featuring either dinuclear M(catphos)2Pd or trinuclear M{(catphos)2Pd}2 motifs. Characterisation of the products by crystallographic and solution NMR studies gives insight into the structural diversity and flexibility of the coordination environments of the group-13 elements and their impact on the stability of the multinuclear complexes. The results indicate that gallium and indium are the most suitable elements for the stabilisation of di- and trinuclear assemblies, respectively. Dynamic NMR spectroscopy allowed to follow the dynamic averaging of the coordination environments of the four distinguishable catechol phosphines in the indium complex [M{(catphos)2Pd}2]H. The results revealed that the isomerisation follows a complicated pathway involving several distinguishable proton transfer steps, and allowed to propose a mechanistic explanation for the observed isomerisation.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">24802543</PMID><DateCreated><Year>2014</Year><Month>5</Month><Day>7</Day></DateCreated><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1477-9234</ISSN><JournalIssue CitedMedium="Internet"><PubDate><Year>2014</Year><Month>May</Month><Day>7</Day></PubDate></JournalIssue><Title>Dalton transactions (Cambridge, England : 2003)</Title><ISOAbbreviation>Dalton Trans</ISOAbbreviation></Journal><ArticleTitle>Heterobimetallic catechol-phosphine complexes with palladium and a group-13 element: structural flexibility and dynamics.</ArticleTitle><Pagination><MedlinePgn></MedlinePgn></Pagination><Abstract><AbstractText NlmCategory="UNLABELLED">Group-13 metal acetylacetonates [M(acac)3] (M = Al, Ga, In) or Al(OiPr)3 react with a complex [Pd(catphosH)2] that may act as chelating ligand towards a second metal, or with a mixture of catechol phosphine (catphosH2) and [PdCl2(cod)], to give heterometallic complexes featuring either dinuclear M(catphos)2Pd or trinuclear M{(catphos)2Pd}2 motifs. Characterisation of the products by crystallographic and solution NMR studies gives insight into the structural diversity and flexibility of the coordination environments of the group-13 elements and their impact on the stability of the multinuclear complexes. The results indicate that gallium and indium are the most suitable elements for the stabilisation of di- and trinuclear assemblies, respectively. Dynamic NMR spectroscopy allowed to follow the dynamic averaging of the coordination environments of the four distinguishable catechol phosphines in the indium complex [M{(catphos)2Pd}2]H. The results revealed that the isomerisation follows a complicated pathway involving several distinguishable proton transfer steps, and allowed to propose a mechanistic explanation for the observed isomerisation.</AbstractText></Abstract><AuthorList><Author><LastName>Bauer</LastName><ForeName>G</ForeName><Initials>G</Initials><Affiliation>Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany. gudat@iac.uni-stuttgart.de.</Affiliation></Author><Author><LastName>Nieger</LastName><ForeName>M</ForeName><Initials>M</Initials></Author><Author><LastName>Gudat</LastName><ForeName>D</ForeName><Initials>D</Initials></Author></AuthorList><Language>ENG</Language><PublicationTypeList><PublicationType>JOURNAL ARTICLE</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>5</Month><Day>7</Day></ArticleDate></Article><MedlineJournalInfo><MedlineTA>Dalton Trans</MedlineTA><NlmUniqueID>101176026</NlmUniqueID><ISSNLinking>1477-9226</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>5</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>5</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>5</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>aheadofprint</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1039/c4dt00785a</ArticleId><ArticleId IdType="pubmed">24802543</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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