MEM(TCNQ)2 at room temperature and 10 K, and the absence of a spin-Peierls transition

Precise X‐ray determinations of the crystal structure of the 1:2 complex of N‐ethyl‐N‐methyl­morpholinium and 7,7,8,8‐tetra­cyano‐p‐quinodi­methanide, abbreviated as MEM–TCNQ or MEM(TCNQ)2 (C7H16NO+·2C12H4N40.5−), have been performed at 293 and at 10 K. Evidence for the expected spin‐Peierls transit...

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Bibliographic Details
Published in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2001-08, Vol.57 (8), p.991-993
Main Authors: Figgis, Brian N., Sobolev, Alexandre N., Kepert, Cameron J., Kurmoo, Mohamedally
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Heterocyclic compounds
Organic compounds
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
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Summary:Precise X‐ray determinations of the crystal structure of the 1:2 complex of N‐ethyl‐N‐methyl­morpholinium and 7,7,8,8‐tetra­cyano‐p‐quinodi­methanide, abbreviated as MEM–TCNQ or MEM(TCNQ)2 (C7H16NO+·2C12H4N40.5−), have been performed at 293 and at 10 K. Evidence for the expected spin‐Peierls transition at 19 K is not found, and this may follow from radiation damage to the crystal or from insufficient equipment sensitivity.
ISSN:0108-2701
1600-5759
DOI:10.1107/S0108270101008794