Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with p‐Sulfonatocalix[4]arene
Identifieur interne : 000E27 ( Istex/Corpus ); précédent : 000E26; suivant : 000E28Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with p‐Sulfonatocalix[4]arene
Auteurs : Nabila Mattoussi ; Guillaume Pilet ; Ghenadie Novitchi ; Faouzi Meganem ; Dominique LuneauSource :
- European Journal of Inorganic Chemistry [ 1434-1948 ] ; 2013-05-06.
English descriptors
Abstract
Reaction of sodium p‐sulfonatocalix[4]arene (Na4C4AS) with iron(III) nitrate and 1,10‐phenanthroline in water affords a compound in which a coordinated p‐sulfonatocalix[4]arene anion (C4AS4–) bridges two oxo‐bridged iron(III) dinuclear units, {FeIII2(μ‐O)(H2O)5(phen)2}. The crystal structure of the compound also reveals noncoordinated C4AS4– anions and crystallization water molecules. The coordinated p‐sulfonatocalix[4]arene links the {FeIII2(μ‐O)(H2O)5(phen)2} dinuclear units through two of the four sulfonate groups in the 1,2 (syn) and 1,3 (anti) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, J = –127(1) cm–1, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. This opens up the possibility of polynuclear complexes stabilized in water and of control of their magnetic properties.
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DOI: 10.1002/ejic.201201426
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ISTEX:B055B40F230EB19A3E95303815E861C35C29E51DLe document en format XML
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The crystal structure of the compound also reveals noncoordinated C4AS4– anions and crystallization water molecules. The coordinated p‐sulfonatocalix[4]arene links the {FeIII2(μ‐O)(H2O)5(phen)2} dinuclear units through two of the four sulfonate groups in the 1,2 (syn) and 1,3 (anti) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, J = –127(1) cm–1, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. This opens up the possibility of polynuclear complexes stabilized in water and of control of their magnetic properties.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Nabila Mattoussi</name><affiliations><json:string>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</json:string><json:string>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</json:string></affiliations></json:item><json:item><name>Guillaume Pilet</name><affiliations><json:string>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</json:string></affiliations></json:item><json:item><name>Ghenadie Novitchi</name><affiliations><json:string>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</json:string><json:string>Laboratoire National des Champs Magnétiques Intenses, CNRS UPR 3228, 25 Rue des Martyrs, 38042 Grenoble, France</json:string></affiliations></json:item><json:item><name>Faouzi Meganem</name><affiliations><json:string>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</json:string></affiliations></json:item><json:item><name>Dominique Luneau</name><affiliations><json:string>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</json:string><json:string>E-mail: dominique.luneau@univ‐lyon1.fr</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Supramolecular chemistry</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Calixarenes</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Iron</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Bridging ligands</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Magnetic properties</value></json:item></subject><articleId><json:string>EJIC201201426</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Reaction of sodium p‐sulfonatocalix[4]arene (Na4C4AS) with iron(III) nitrate and 1,10‐phenanthroline in water affords a compound in which a coordinated p‐sulfonatocalix[4]arene anion (C4AS4–) bridges two oxo‐bridged iron(III) dinuclear units, {FeIII2(μ‐O)(H2O)5(phen)2}. The crystal structure of the compound also reveals noncoordinated C4AS4– anions and crystallization water molecules. The coordinated p‐sulfonatocalix[4]arene links the {FeIII2(μ‐O)(H2O)5(phen)2} dinuclear units through two of the four sulfonate groups in the 1,2 (syn) and 1,3 (anti) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, J = –127(1) cm–1, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. 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KGaA, Weinheim</p></availability><date>2013</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with p‐Sulfonatocalix[4]arene</title><author xml:id="author-1"><persName><forename type="first">Nabila</forename><surname>Mattoussi</surname></persName><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><affiliation>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</affiliation></author><author xml:id="author-2"><persName><forename type="first">Guillaume</forename><surname>Pilet</surname></persName><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation></author><author xml:id="author-3"><persName><forename type="first">Ghenadie</forename><surname>Novitchi</surname></persName><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><affiliation>Laboratoire National des Champs Magnétiques Intenses, CNRS UPR 3228, 25 Rue des Martyrs, 38042 Grenoble, France</affiliation></author><author xml:id="author-4"><persName><forename type="first">Faouzi</forename><surname>Meganem</surname></persName><affiliation>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</affiliation></author><author xml:id="author-5"><persName><forename type="first">Dominique</forename><surname>Luneau</surname></persName><email>dominique.luneau@univ‐lyon1.fr</email><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation></author></analytic><monogr><title level="j">European Journal of Inorganic Chemistry</title><title level="j" type="abbrev">Eur. J. Inorg. Chem.</title><idno type="pISSN">1434-1948</idno><idno type="eISSN">1099-0682</idno><idno type="DOI">10.1002/(ISSN)1099-0682c</idno><imprint><publisher>WILEY‐VCH Verlag</publisher><pubPlace>Weinheim</pubPlace><date type="published" when="2013-05-06"></date><biblScope unit="volume">2013</biblScope><biblScope unit="issue">14</biblScope><biblScope unit="page" from="2652">2652</biblScope><biblScope unit="page" to="2656">2656</biblScope></imprint></monogr><idno type="istex">B055B40F230EB19A3E95303815E861C35C29E51D</idno><idno type="DOI">10.1002/ejic.201201426</idno><idno type="ArticleID">EJIC201201426</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2013</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Reaction of sodium p‐sulfonatocalix[4]arene (Na4C4AS) with iron(III) nitrate and 1,10‐phenanthroline in water affords a compound in which a coordinated p‐sulfonatocalix[4]arene anion (C4AS4–) bridges two oxo‐bridged iron(III) dinuclear units, {FeIII2(μ‐O)(H2O)5(phen)2}. The crystal structure of the compound also reveals noncoordinated C4AS4– anions and crystallization water molecules. The coordinated p‐sulfonatocalix[4]arene links the {FeIII2(μ‐O)(H2O)5(phen)2} dinuclear units through two of the four sulfonate groups in the 1,2 (syn) and 1,3 (anti) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, J = –127(1) cm–1, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. This opens up the possibility of polynuclear complexes stabilized in water and of control of their magnetic properties.</p></abstract><abstract xml:lang="en" style="graphical"><p>We report the synthesis, crystal structure, and magnetic properties of a compound in which a coordinated p‐sulfonatocalix[4]arene anion bridges two oxo‐bridged iron(III) dinuclear units.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>Supramolecular chemistry</term></item><item><term>Calixarenes</term></item><item><term>Iron</term></item><item><term>Bridging ligands</term></item><item><term>Magnetic properties</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Full Paper</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2012-11-26">Received</change><change when="2013-05-06">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/B055B40F230EB19A3E95303815E861C35C29E51D/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>WILEY‐VCH Verlag</publisherName><publisherLoc>Weinheim</publisherLoc></publisherInfo><doi registered="yes">10.1002/(ISSN)1099-0682c</doi><issn type="print">1434-1948</issn><issn type="electronic">1099-0682</issn><idGroup><id type="product" value="EJIC"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="EUROPEAN JOURNAL OF INORGANIC CHEMISTRY">European Journal of Inorganic Chemistry</title><title type="short">Eur. J. Inorg. Chem.</title></titleGroup></publicationMeta><publicationMeta level="part" position="140"><doi origin="wiley" registered="yes">10.1002/ejic.v2013.14</doi><numberingGroup><numbering type="journalVolume" number="2013">2013</numbering><numbering type="journalIssue">14</numbering></numberingGroup><coverDate startDate="2013-05-06">May 2013</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="26" status="forIssue"><doi origin="wiley" registered="yes">10.1002/ejic.201201426</doi><idGroup><id type="unit" value="EJIC201201426"></id></idGroup><countGroup><count type="pageTotal" number="5"></count></countGroup><titleGroup><title type="articleCategory">Full Paper</title><title type="tocHeading1">Full Papers</title><title type="tocHeading2">p‐Sulfonatocalix[4]arene Fe Complex</title></titleGroup><copyright ownership="publisher">Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</copyright><eventGroup><event type="manuscriptReceived" date="2012-11-26"></event><event type="xmlConverted" agent="Converter:JWSART34_TO_WML3G version:3.4.6 mode:FullText mathml2tex" date="2015-06-15"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.4.6 mode:FullText" date="2015-06-15"></event><event type="publishedOnlineEarlyUnpaginated" date="2013-03-13"></event><event type="publishedOnlineFinalForm" date="2013-05-06"></event><event type="firstOnline" date="2013-03-13"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.6.4 mode:FullText" date="2015-10-01"></event></eventGroup><numberingGroup><numbering type="pageFirst">2652</numbering><numbering type="pageLast">2656</numbering></numberingGroup><linkGroup><link type="toTypesetVersion" href="file:EJIC.EJIC201201426.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="5"></count><count type="tableTotal" number="2"></count><count type="referenceTotal" number="32"></count></countGroup><titleGroup><title type="main" xml:lang="en">Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with <i>p</i>‐Sulfonatocalix[4]arene</title><title type="short" xml:lang="en"><i>p</i>‐Sulfonatocalix[4]arene Iron(III) Complex</title></titleGroup><creators><creator xml:id="au1" creatorRole="author" affiliationRef="#af1 #af2"><personName><givenNames>Nabila</givenNames><familyName>Mattoussi</familyName></personName></creator><creator xml:id="au2" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Guillaume</givenNames><familyName>Pilet</familyName></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af1 #af3"><personName><givenNames>Ghenadie</givenNames><familyName>Novitchi</familyName></personName></creator><creator xml:id="au4" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Faouzi</givenNames><familyName>Meganem</familyName></personName></creator><creator xml:id="au5" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Dominique</givenNames><familyName>Luneau</familyName></personName><contactDetails><email normalForm="dominique.luneau@univ-lyon1.fr">dominique.luneau@univ‐lyon1.fr</email></contactDetails></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="FR" type="organization"><unparsedAffiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, <url href="http://www.univ-lyon1.fr">http://www.univ‐lyon1.fr</url></unparsedAffiliation></affiliation><affiliation xml:id="af2" type="organization"><unparsedAffiliation>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</unparsedAffiliation></affiliation><affiliation xml:id="af3" countryCode="FR" type="organization"><unparsedAffiliation>Laboratoire National des Champs Magnétiques Intenses, CNRS UPR 3228, 25 Rue des Martyrs, 38042 Grenoble, France</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">Supramolecular chemistry</keyword><keyword xml:id="kwd2">Calixarenes</keyword><keyword xml:id="kwd3">Iron</keyword><keyword xml:id="kwd4">Bridging ligands</keyword><keyword xml:id="kwd5">Magnetic properties</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>Reaction of sodium <i>p</i>‐sulfonatocalix[4]arene (Na<sub>4</sub>C4AS) with iron(III) nitrate and 1,10‐phenanthroline in water affords a compound in which a coordinated <i>p</i>‐sulfonatocalix[4]arene anion (C4AS<sup>4–</sup>) bridges two oxo‐bridged iron(III) dinuclear units, {Fe<sup>III</sup><sub>2</sub>(μ‐O)(H<sub>2</sub>O)<sub>5</sub>(phen)<sub>2</sub>}. The crystal structure of the compound also reveals noncoordinated C4AS<sup>4–</sup> anions and crystallization water molecules. The coordinated <i>p</i>‐sulfonatocalix[4]arene links the {Fe<sup>III</sup><sub>2</sub>(μ‐O)(H<sub>2</sub>O)<sub>5</sub>(phen)<sub>2</sub>} dinuclear units through two of the four sulfonate groups in the 1,2 (<i>syn</i>) and 1,3 (<i>anti</i>) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, <i>J</i> = –127(1) cm<sup>–1</sup>, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. This opens up the possibility of polynuclear complexes stabilized in water and of control of their magnetic properties.</p></abstract><abstract type="graphical" xml:lang="en"><p>We report the synthesis, crystal structure, and magnetic properties of a compound in which a coordinated <i>p</i>‐sulfonatocalix[4]arene anion bridges two oxo‐bridged iron(III) dinuclear units. <blockFixed type="graphic"><mediaResourceGroup><mediaResource alt="image" eRights="yes" copyright="WILEY-VCH" href="urn:x-wiley:14341948:media:EJIC201201426:fig000"></mediaResource></mediaResourceGroup></blockFixed></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with p‐Sulfonatocalix[4]arene</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>p‐Sulfonatocalix[4]arene Iron(III) Complex</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Synthesis, Crystal Structure, and Magnetic Properties of a Bis‐Dinuclear Oxo‐Bridged Iron(III) Complex with p‐Sulfonatocalix[4]arene</title></titleInfo><name type="personal"><namePart type="given">Nabila</namePart><namePart type="family">Mattoussi</namePart><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><affiliation>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Guillaume</namePart><namePart type="family">Pilet</namePart><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Ghenadie</namePart><namePart type="family">Novitchi</namePart><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><affiliation>Laboratoire National des Champs Magnétiques Intenses, CNRS UPR 3228, 25 Rue des Martyrs, 38042 Grenoble, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Faouzi</namePart><namePart type="family">Meganem</namePart><affiliation>Laboratoire de Synthèse Organique, Faculté de Sciences de Bizerte, Jarzouna,7021 Bizerte, Tunisie</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Dominique</namePart><namePart type="family">Luneau</namePart><affiliation>Laboratoire des Multimatériaux et Interfaces (LMI) UMR 5615, Université Claude Bernard Lyon 1, Campus de la Doua, 69222 Villeurbanne cedex, France, http://www.univ‐lyon1.fr</affiliation><affiliation>E-mail: dominique.luneau@univ‐lyon1.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>WILEY‐VCH Verlag</publisher><place><placeTerm type="text">Weinheim</placeTerm></place><dateIssued encoding="w3cdtf">2013-05-06</dateIssued><dateCaptured encoding="w3cdtf">2012-11-26</dateCaptured><copyrightDate encoding="w3cdtf">2013</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">5</extent><extent unit="tables">2</extent><extent unit="references">32</extent></physicalDescription><abstract lang="en">Reaction of sodium p‐sulfonatocalix[4]arene (Na4C4AS) with iron(III) nitrate and 1,10‐phenanthroline in water affords a compound in which a coordinated p‐sulfonatocalix[4]arene anion (C4AS4–) bridges two oxo‐bridged iron(III) dinuclear units, {FeIII2(μ‐O)(H2O)5(phen)2}. The crystal structure of the compound also reveals noncoordinated C4AS4– anions and crystallization water molecules. The coordinated p‐sulfonatocalix[4]arene links the {FeIII2(μ‐O)(H2O)5(phen)2} dinuclear units through two of the four sulfonate groups in the 1,2 (syn) and 1,3 (anti) modes. The complete structure may be viewed as Fe‐hinged calixarene bicapsules. The study of the magnetic susceptibility reveals strong antiferromagnetic interactions between the iron(III) ions within the dinuclear units. Because the structural features of the two Fe–O–Fe oxo bridges are very similar, the magnetic data can be fitted well by considering one exchange coupling constant, J = –127(1) cm–1, which is in agreement with previously found values for oxo‐bridged diiron(III) complexes with similar structural features. This opens up the possibility of polynuclear complexes stabilized in water and of control of their magnetic properties.</abstract><abstract type="graphical" lang="en">We report the synthesis, crystal structure, and magnetic properties of a compound in which a coordinated p‐sulfonatocalix[4]arene anion bridges two oxo‐bridged iron(III) dinuclear units.</abstract><subject lang="en"><genre>keywords</genre><topic>Supramolecular chemistry</topic><topic>Calixarenes</topic><topic>Iron</topic><topic>Bridging ligands</topic><topic>Magnetic properties</topic></subject><relatedItem type="host"><titleInfo><title>European Journal of Inorganic Chemistry</title></titleInfo><titleInfo type="abbreviated"><title>Eur. J. Inorg. Chem.</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Full Paper</topic></subject><identifier type="ISSN">1434-1948</identifier><identifier type="eISSN">1099-0682</identifier><identifier type="DOI">10.1002/(ISSN)1099-0682c</identifier><identifier type="PublisherID">EJIC</identifier><part><date>2013</date><detail type="volume"><caption>vol.</caption><number>2013</number></detail><detail type="issue"><caption>no.</caption><number>14</number></detail><extent unit="pages"><start>2652</start><end>2656</end><total>5</total></extent></part></relatedItem><identifier type="istex">B055B40F230EB19A3E95303815E861C35C29E51D</identifier><identifier type="DOI">10.1002/ejic.201201426</identifier><identifier type="ArticleID">EJIC201201426</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. 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