Anion Symmetry and the Separability of Structural Parameters for Tetramethyltetraselenafulvalenium Salts, (TMTSF)2X
- 1 July 1986
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 136 (2-4), 361-382
- https://doi.org/10.1080/00268948608074735
Abstract
Empirical correlations of various structural parameters for a series of (TMTSF)2X salts have been explored utilizing a van der Waals-like estimate for the radius of the counterion X. Included amongst the parameters studied are: (a) the lengths of the transverse cell constants c and b; (b) the interdonor Se .. Se contact distances; (c) the alternate separation between molecular centers of mass along the columnar stack of donors (a); and (d) the symmetry and strength of the anion coupling to its donor-dominated structural cavity. The notable result is that independent correlations are found for salts containing centrosymmetric and non-centrosymmetric anions.Keywords
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