Issue 26, 2006
From the journal:

Journal of Materials Chemistry

Spin transition in a triazine-based Fe(ii) complex: variable-temperature structural, thermal, magnetic and spectroscopic studies†‡

Manuel Quesada,a   Maria Monrabal,a   Guillem Aromí,*b   Víctor A. de la Peña-O'Shea,b   Martí Gich,c   Elies Molins,c   Olivier Roubeau,d   Simon J. Teat,§e   Elizabeth J. MacLean,e   Patrick Gamez*a  and  Jan Reedijka  

* Corresponding authors

a Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300RA Leiden, The Netherlands
E-mail: p.gamez@chem.leidenuniv.nl
Fax: +31(0)715274671

b Universitat de Barcelona, Departament de Química Inorgànica, Diagonal 647, 08028 Barcelona, Spain
E-mail: guillem.aromi@qi.ub.es

c Institut de Ciència de Materials de Barcelona-Consell d'Investigacions Científiques (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain

d Centre de Recherche Paul Pascal-CNRS UPR 8641, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France

e CCLRC Daresbury Laboratory, Warrington, Cheshire, UK

Abstract

The crystal structure of a new monomeric Fe(II) spin-crossover thiocyanate complex with a polypyridyl triazine-based ligand is reported at three temperatures. Spectroscopic, thermal and magnetic studies are presented that allowed the characterization of the thermal spin-crossover experienced by this compound and its cooperative character. The temperature of the transition is close to 200 K and the process is characterized by thermodynamic variations of ΔtrsH = 7.22(2) kJ mol−1 and ΔtrsS = 36.4(2) J mol−1 K−1.

Graphical abstract: Spin transition in a triazine-based Fe(ii) complex: variable-temperature structural, thermal, magnetic and spectroscopic studies

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Article information

DOI
https://doi.org/10.1039/B602903E
Article type
Paper
Submitted
27 Feb 2006
Accepted
30 Mar 2006
First published
03 May 2006

J. Mater. Chem., 2006,16, 2669-2676

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Spin transition in a triazine-based Fe(II) complex: variable-temperature structural, thermal, magnetic and spectroscopic studies

M. Quesada, M. Monrabal, G. Aromí, V. A. de la Peña-O'Shea, M. Gich, E. Molins, O. Roubeau, S. J. Teat, E. J. MacLean, P. Gamez and J. Reedijk, J. Mater. Chem., 2006, 16, 2669 DOI: 10.1039/B602903E

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