Issue 7, 2001
From the journal:

New Journal of Chemistry

Symmetric and asymmetric trinuclear cores in novel μ-alkoxo-bridged mixed-metal CuII2 ZnII complexes: synthesis from zerovalent copper and zinc oxide, structure and magnetism

Elena A. Vinogradova,a   Olga Yu. Vassilyeva,*a   Volodymyr N. Kokozay,a   Philip J. Squattrito,b   Jan Reedijk,c   Gerard A. Van Albada,c   Wolfgang Linert,d   Satish K. Tiwarye  and  Paul R. Raithbyf  

* Corresponding authors

a Department of Inorganic Chemistry, National Taras Shechenko Uniersity, Volodimirska st. 64, Kyi, Ukraine
E-mail: vassilyeva@chem.univ.kiev.ua
Fax: Fax: +380 44 296 2467

b Department of Chemistry, Central Michigan Uniersity, Mt. Pleasant, MI, USA

c Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden Uniersity, PO Box 9502, Leiden, RA, The Netherlands

d Institute of Inorganic Chemistry, Vienna Uniersity of Technology, Getreidemarkt 9/153, Vienna, Austria

e Department of Chemistry, Uniersity of Edinburgh, West Mains Road, Edinburgh, UK

f Department of Chemistry, Uniersity of Bath, Claerton Down, Bath, UK

Abstract

Three novel heterotrinuclear complexes, [Cu2Zn(NH3)Cl3(Me2Ea)3] 1, [Cu2Zn(NH3)Br3(Me2Ea)3] 2 and [Cu2Zn(NCS)3(Me2Ea)3]·CH3CN 3 (Ea = NCH2CH2O), have been prepared using zerovalent copper, zinc oxide, an ammonium salt and 2-dimethylaminoethanol (HMe2Ea) in air. Crystallographic investigations reveal that they contain trinuclear symmetric (3) and asymmetric (1 and 2) cores, that consist of a portion of a distorted cube in which alternate corners are metal and non-metal atoms and one corner metal site is vacant. The chemical difference between the three compounds produces changes in the coordination environment of the metal atoms and their overall crystal structures. Cryomagnetic measurements reveal that the overall antiferromagnetic coupling in the symmetric complex 3 is stronger compared to the other two complexes, despite their slightly shorter copper–copper separations.

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Article information

DOI
https://doi.org/10.1039/B101883N
Article type
Paper
Submitted
02 Feb 2001
Accepted
26 Apr 2001
First published
30 May 2001

New J. Chem., 2001,25, 949-953

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Symmetric and asymmetric trinuclear cores in novel μ-alkoxo-bridged mixed-metal CuII2 ZnII complexes: synthesis from zerovalent copper and zinc oxide, structure and magnetism

E. A. Vinogradova, O. Yu. Vassilyeva, V. N. Kokozay, P. J. Squattrito, J. Reedijk, G. A. Van Albada, W. Linert, S. K. Tiwary and P. R. Raithby, New J. Chem., 2001, 25, 949 DOI: 10.1039/B101883N

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