Temperature-Dependence of Crystal-Structures, and Electrical Conducting and Magnetic-Properties in Plate Crystals of 1/2 Tetrafluorotetracyanoquinodimethane/Tetrafluorotetracyanoquinodimethanide Mixed Tetramethyl-Ammonium and Tetramethyl-Phosphonium Salts

Ueda K; Sugimoto T; Tada T; Nishimura K; Endo S; Toyota N; Kohama M; Yamamoto K; Yamaguchi T; Suenaga Y; Munakata M; Kanehisa N; Shibamoto Y; Kai Y; Hosoito N

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.296, 323-333, 1997

DOI10.1080/10587259708032330 Export Citation

Temperature-Dependence of Crystal-Structures, and Electrical Conducting and Magnetic-Properties in Plate Crystals of 1/2 Tetrafluorotetracyanoquinodimethane/Tetrafluorotetracyanoquinodimethanide Mixed Tetramethyl-Ammonium and Tetramethyl-Phosphonium Salts

Ueda K, Sugimoto T, Tada T, Nishimura K, Endo S, Toyota N, Kohama M, Yamamoto K, Yamaguchi T, Suenaga Y, Munakata M, Kanehisa N, Shibamoto Y, Kai Y, Hosoito N

The structure of a plate crystal of ((PMe4+.TCNQF(4)(-.)). 1/2TCNQF(4)) was analyzed and very similar to that of the corresponding NMe4+ salt. However, significant difference was recognized between the two crystals in the structures of TCNQF(4) and TCNQF(4)(-.) molecules, and especially in the contacts between the two TCNQF(4)(-.) molecules in dimerization and between the TCNQF(4) and TCNQF(4)(-.) molecules. The change in both molecular structure and contact as above was also observed at a lowering temperature. The magnitude in change was larger in the NMe4+ salt than in the PMe4+ salt. However, the change exerted no special influence on the elctrical conducting and magnetic properties.