Document Detail


Synthesis of cubane-type Ni(ii) complexes from pyridyl-alcohol ligands; their single-molecule magnet behaviour.
MedLine Citation:
PMID:  23389638     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The reactions of NiCl(2)·2H(2)O or [NiCl(2)(DME)] (DME = dimethoxyethane) with 2-methyl-1-(pyridin-2-yl)propan-2-ol (HL) and 2-(pyridin-2-yl)ethanol (HL(Et)), in a 1 : 1 ratio, afforded the tetranuclear, cubane-type clusters [Ni(μ(3)-Cl)Cl(HL)](4) () and [Ni(μ(3)-Cl)Cl(HL(Et))](4) (), respectively. These are tetramers of the hypothetical mononuclear formula-isomers [NiCl(2)(HL)] and [NiCl(2)(HL(Et))], respectively, and represent rare examples of structurally characterized cubane-like transition metal dihalogenide complexes. The 2 : 1 reactions between HL or HL(Et) and [NiCl(2)(DME)] yielded, instead, the mononuclear [NiCl(2)(HL)(2)] () and the dinuclear complex [Ni(μ-Cl)(HL(Et))(2)](2)Cl(2) (), respectively. The reaction of with NaOH afforded selectively the cubane-type cluster [Ni(μ(3)-OH)Cl(HL)](4) () which differs only in the nature of the capping anions (Cl vs. OH, respectively). The magnetic properties of the unusual tetranuclear cubanes and have been investigated and revealed in both cases single-molecule magnet (SMM) behaviour.
Authors:
Sophie Hameury; Laure Kayser; Roberto Pattacini; Guillaume Rogez; Wolfgang Wernsdorfer; Pierre Braunstein
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-7
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Laboratoire de Chimie de Coordination, UMR 7177 CNRS/Université de Strasbourg, Institut Le Bel 4, Rue Blaise Pascal, CS90032, 67081 Strasbourg Cedex, France. braunstein@unistra.fr.
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