Issue 22, 2008
From the journal:

Dalton Transactions

Synthesis, structure and magnetic properties of oligometallic systems derived from di- and trinuclear copper(ii) amido-oximate complexes†

Sergey V. Kolotilov,a   Dieter Schollmeyer,b   Laurence K. Thompson,c   Vladimir Golub,d   Anthony W. Addisone  and  Vitaly V. Pavlishchuk*a  

* Corresponding authors

a L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of the Ukraine, Prospekt Nauki 31, Kiev, Ukraine
E-mail: shchuk@svitonline.com
Fax: (38 044) 525 62 16
Tel: (38 044) 525 42 28

b University of Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, Mainz, Germany

c Department of Chemistry, Memorial University, St. John's, NL, Canada

d Institute of Magnetism NAS and MES of Ukraine, 36-B Vernadsky str., Kiev, Ukraine

e Department of Chemistry, Drexel University, Philadelphia, PA, USA

Abstract

Three heterometallic complexes [M(H2O)n][Cu3L2(H2O)] (M = Mn2+, Co2+ or Ba2+) and one dinuclear compound (CuDien)(CuL{H2O}) were prepared by interaction of anionic compounds Cu3L22− or CuL2− with the corresponding cations (H4L = 1,9-dicyano-1,9-bis(hydroximino)-3,7-diazanonane-2,8-dione; Dien = 1,5-diamino-3-azapentane). The complexes [M(H2O)n][Cu3L2(H2O)] have a polymeric structure, formed via oligomerization of Cu3L22− units and additionally, in the case of the Ba-salt, by binding of Cu3L22− units through Ba2+. Antiferromagnetic interactions occur in all the complexes, while for [Co(H2O)6][Cu3L2(H2O)] there is evidence of some ferromagnetic ordering at low temperatures. The values of J are lower in magnitude than for similar, previously reported systems, which is attributed to the electron-withdrawing effect of the ligand cyano groups.

Graphical abstract: Synthesis, structure and magnetic properties of oligometallic systems derived from di- and trinuclear copper(ii) amido-oximate complexes

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Article information

DOI
https://doi.org/10.1039/B802822B
Article type
Paper
Submitted
19 Feb 2008
Accepted
12 Mar 2008
First published
18 Apr 2008

Dalton Trans., 2008, 3007-3014

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Synthesis, structure and magnetic properties of oligometallic systems derived from di- and trinuclear copper(II) amido-oximate complexes

S. V. Kolotilov, D. Schollmeyer, L. K. Thompson, V. Golub, A. W. Addison and V. V. Pavlishchuk, Dalton Trans., 2008, 3007 DOI: 10.1039/B802822B

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