New Phenoxido-Bridged Quasi-Tetrahedral and Rhomboidal [Cu4] Compounds Bearing μ4-Oxido or μ1,1-Azido Ligands: Synthesis, Chemical Reactivity, and Magnetic Studies
| hal.structure.identifier | Department of Chemistry, Indian Institute of Technology | |
| dc.contributor.author | SARKAR, Mrinal | |
| hal.structure.identifier | Centre de recherches Paul Pascal [CRPP] | |
| dc.contributor.author | CLÉRAC, Rodolphe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MATHONIÈRE, Corine | |
| hal.structure.identifier | Centre de recherches Paul Pascal [CRPP] | |
| dc.contributor.author | G. R. HEARNS, Nigel | |
| hal.structure.identifier | Dipartimento di Chimica e Centro di Strutturistica Diffrattometica | |
| dc.contributor.author | BERTOLASI, Valerio | |
| hal.structure.identifier | Department of Chemistry, Indian Institute of Technology | |
| dc.contributor.author | RAY, Debashis | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | [Cu2(μ4-O)Cu2] and [Cu2(μ1,1-N3)4Cu2] geometrical arrangements are found in a new family of tetranuclear copper(II) complexes: [Cu4(μ4-O)(μ-cip)2Cl4] (1), [Cu4(μ4-O)- (μ-cip)2(μ1,3-O2CPh)4] 3 2CH3OH (2 3 2CH3OH), and [Cu4(μ1,1-N3)4(μ-cip)2(N3)2] 3DMF (3 3 DMF) [Hcip = 2,6- bis(cyclohexyliminomethylene)-4-methylphenol; CH3OH = methanol;DMF = dimethylformamide]. These complexes have been characterized by X-ray crystallography, and their magnetic properties have been studied. 1 and 2 form quasi-tetrahedral [Cu4(μ4-O)] complexes, and 3 is the first example of a rhomboidal [Cu4(μ1,1-N3)] compound. Formation of the [Cu4] compounds is achieved via ligand-exchange reactions. The relative binding strength of the three ancillary ligands as N3- > PhCO2- > Cl- has been demonstrated from the core-conversion and peripheral ligand-exchange reactions. For the three complexes, the magnetic susceptibility measurements in the range of 1.8-300 K have been performed and modeled using two isolated S = 1/2 dimers based on the spin HamiltonianH =-2J{SCu,1 3 SCu,2} with J/kB =-513,-340, and -315 K for 1-3, respectively (where J is the exchange constant through the oxido-phenoxido and azido-phenoxido bridges, respectively). | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Synthesis : Magnetic studies | |
| dc.title.en | New Phenoxido-Bridged Quasi-Tetrahedral and Rhomboidal [Cu4] Compounds Bearing μ4-Oxido or μ1,1-Azido Ligands: Synthesis, Chemical Reactivity, and Magnetic Studies | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/ic102226j | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | pp. 3922-3933 | |
| bordeaux.volume | 50 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00611471 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00611471v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2011&rft.volume=50&rft.spage=pp.%203922-3933&rft.epage=pp.%203922-3933&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=SARKAR,%20Mrinal&CL%C3%89RAC,%20Rodolphe&MATHONI%C3%88RE,%20Corine&G.%20R.%20HEARNS,%20Nigel&BERTOLASI,%20Valerio&rft.genre=article |
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