Issue 2, 2001
From the journal:

Journal of Materials Chemistry

Shuji Aonuma,‡*a   Hélène Casellas,a   Christophe Faulmann,a   Bénédicte Garreau de Bonneval,a   Isabelle Malfant,a   Patrick Cassoux,*a   Pascal G. Lacroix,b   Yuko Hosokoshic  and  Katsuya Inouec  

* Corresponding authors

a Equipe Précurseurs Moléculaires et Matériaux, LCC-CNRS, 205, Route de Narbonne, Toulouse, Cedex 04, France
E-mail: aonuma@lcc-toulouse.fr, cassoux@lcc-toulouse.fr

b Equipe Matériaux Moléculaires et Biomimétiques, LCC-CNRS, 205, Route de Narbonne, Toulouse, Cedex 04, France

c Institute for Molecular Science, Myodaiji, Okazaki, Japan

Abstract

Salts of the Me3N+-TEMPO cation radical (Me3N+-TEMPO = N,N,N-trimethyl(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)ammonium) with I− and PF6− are prepared. Their crystal structure and magnetic properties are reported (antiferromagnetically coupled dimers for (Me3N-TEMPO)I and antiferromagnetically coupled chains for (Me3N-TEMPO)PF6). The Me3N+-TEMPO magnetic cation radical is associated with M(dmit)2 (M = Ni, Pd; dmit2−  = 1,3-dithiole-2-thioxo-4,5-dithiolato) to afford the divalent (Me3N-TEMPO)2[M(dmit)2] (M = Ni, Pd) salts and the monovalent (Me3N-TEMPO)[Ni(dmit)2] salt. The crystal structures of (Me3N-TEMPO)2[M(dmit)2] (M = Ni, Pd) and (Me3N-TEMPO)[Ni(dmit)2] are determined. In the (Me3N-TEMPO)2[M(dmit)2] salts, a unique, non planar, chair conformation of the M(dmit)2 molecule is observed. These salts display conventional Curie behaviour. The (Me3N-TEMPO)[Ni(dmit)2] salt exhibits a single-crystal room-temperature conductivity of 4 × 10−3 S cm−1, which is rather high for an integral oxidation state salt.

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Article information

DOI
https://doi.org/10.1039/B008424G
Article type
Paper
Submitted
09 Aug 2000
Accepted
24 Oct 2000
First published
12 Dec 2000

J. Mater. Chem., 2001,11, 337-345

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Structure and properties of novel M(dmit)2 salts with the Me3N+-TEMPO cation radical (Me3N+-TEMPO = N,N,N-trimethyl(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)ammonium)

S. Aonuma, H. Casellas, C. Faulmann, B. Garreau de Bonneval, I. Malfant, P. Cassoux, P. G. Lacroix, Y. Hosokoshi and K. Inoue, J. Mater. Chem., 2001, 11, 337 DOI: 10.1039/B008424G

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