Issue 4, 2006
From the journal:

New Journal of Chemistry

An original 1D Cu–Co heterometallic compound: synthesis, structure and magnetic properties

Jean-Pierre Costes,*a   Ruxandra Gheorghe,b   Marius Andruh,*b   Sergiu Shovac  and  Juan-Modesto Clemente Juand  

* Corresponding authors

a Laboratoire de Chimie de Coordination du CNRS, UPR 8241, liée par conventions à l'Université Paul Sabatier et à l'Institut National Polytechnique de Toulouse, 205 route de Narbonne, Toulouse Cedex, France
E-mail: costes@lcc-toulouse.fr
Fax: 33 (0)5 61 55 30 03

b Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie nr. 23, Bucharest, Romania
E-mail: marius.andruh@dnt.ro

c Department of Chemistry, Moldova State University, A. Mateevici str. 60, Chisinau, Moldova

d Instituto de Ciencia Molecular, Universidad de Valencia, c/ Doctor Moliner 50, Burjassot, Spain

Abstract

A novel heterobimetallic system, 1∞[LCuIICoII(NCS)2] (1), was obtained by reacting the neutral mononuclear complex [LCu] with cobalt(II) acetate in the presence of potassium thiocyanate (L is the dianion of the Schiff base resulting from the 2 ∶ 1 condensation of 3-methoxysalicylaldehyde with 1,3-propanediamine). The crystallographic investigation of 1 reveals a one-dimensional alternating zig-zag chain-like structure, made of dinuclear {LCuCo} units linked by thiocyanate bridges. The copper(II) ion is pentacoordinate to the N2O2 donor set of the Schiff base ligand in the basal plane, with the apical position occupied by the sulfur atom. The cobalt ion displays a strongly distorted (4 + 2) octahedral geometry. The distance between the phenoxo-bridged metal ions is 3.149(1) Å. The Cu⋯Co distance for the NCS− bridged ions is equal to 6.125(1) Å. The magnetic properties of 1 were investigated in the temperature range 2–300 K and they are explained by a strong antiferromagnetic Cu(II)–Co(II) exchange interaction through the phenoxo bridges and a weak ferromagnetic Cu(II)–Co(II) interaction through the thiocyanato bridges. Several theoretical models are proposed to fit the magnetic data of 1, the most appropriate one being the full matrix diagonalization for a closed-chain of four dinuclear units [CuIICoII], taking into account two different exchange parameters and a D term, which yielded the following results: J = −101.2 cm−1, j = 2.8 cm−1, D = −0.11 cm−1, g = 2.38.

Graphical abstract: An original 1D Cu–Co heterometallic compound: synthesis, structure and magnetic properties

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/B518029E
Article type
Paper
Submitted
20 Dec 2005
Accepted
27 Jan 2006
First published
22 Feb 2006

New J. Chem., 2006,30, 572-576

Permissions

Request permissions

An original 1D Cu–Co heterometallic compound: synthesis, structure and magnetic properties

J. Costes, R. Gheorghe, M. Andruh, S. Shova and J. Clemente Juan, New J. Chem., 2006, 30, 572 DOI: 10.1039/B518029E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements