Issue 20, 2010
From the journal:

Dalton Transactions

Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2†

Tony D. Keene,‡*abc   Iwan Zimmermann,a   Antonia Neels,d   Olha Sereda,d   Jürg Hauser,a   Michel Bonin,a   Michael B. Hursthouse,b   Daniel J. Price*c  and  Silvio Decurtins*a  

* Corresponding authors

a Departement für Chemie und Biochemie, Universtät Bern, Freiestrasse 3, Bern, Switzerland
E-mail: decurtins@iac.unibe.ch

b School of Chemistry, University of Southampton, University Road, Highfield, Southampton, UK

c WestCHEM, Department of Chemistry, University of Glasgow, University Avenue, Glasgow, Scotland, UK
E-mail: danielp@chem.gla.ac.uk

d Centre Suisse d'Electronique et de Microtechnique SA, Jaquet-Droz 1, Case Postale, Neuchâtel, Switzerland

Abstract

We report here two series of coordination polymer chains: the first being [M(II)(ox)(bnz)2]n (M = Mn 1, Fe 2, Co 3, Ni 4, Cu 5 and Zn 6; ox = oxalate C2O42−; bnz = benzimidazole) and the second [M(II)(ox)(btz)2]n (M = Mn 7, Fe 8, Co 9, Ni 10, Cu 11 and Zn 12; btz = benzotriazole). The first series displays an unusual homometallic [–Mi–Mii–Mii–]n chain topology and the second series is isostructural to [Fe(II)(ox)(btz)2]n, originally reported by Jia et al. (Collect. Czech. Chem. Commun., 2002, 67, 1609–1615). These two series allow us to make comparisons between the spin state of each metal and the magnetic coupling interaction within an isostructural series spanning the full range of spin states available in 3d metals and to investigate which models are the best to use in each case. Compound 8 is a single-chain magnet, the behaviour through spin-canting arising from a Dzyaloshinskii-Moriya interaction. Additionally, we have synthesised a two-dimensional coordination polymer {[Zn(II)(bnz)4][Zn(II)2(ox)3]}n (13), in which distorted hexagonal [Zn(II)2(ox)3]n2n− layers are hydrogen bonded by [Zn(II)(bnz)4]2+ cations to give an interlayer separation of 12.001(2) Å.

Graphical abstract: Heterocyclic amine directed synthesis of metal(ii)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

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Article information

DOI
https://doi.org/10.1039/B927522C
Article type
Paper
Submitted
05 Jan 2010
Accepted
27 Mar 2010
First published
20 Apr 2010

Dalton Trans., 2010,39, 4937-4950

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Heterocyclic amine directed synthesis of metal(II)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

T. D. Keene, I. Zimmermann, A. Neels, O. Sereda, J. Hauser, M. Bonin, M. B. Hursthouse, D. J. Price and S. Decurtins, Dalton Trans., 2010, 39, 4937 DOI: 10.1039/B927522C

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