New conducting radical cation salt based on BEDT-TTF and substituted polyoxometalate anions: [BEDT-TTF]5[VW5O19], 6H2O
1993; Elsevier BV; Volume: 56; Issue: 1 Linguagem: Inglês
10.1016/0379-6779(93)90367-6
ISSN1879-3290
AutoresSmaı̈l Triki, Lahcène Ouahab, D. Grandjean, R. Canet, Chantal Garrigou–Lagrange, P. Delhaès,
Tópico(s)Magnetism in coordination complexes
ResumoThe preparation, X-ray crystal structure, conducting and optical properties of (BEDT-TTF)5VW5O19(H2O)6 are reported. Crystal data: monoclinic, P21/c, a = 19.77(2)Å, b = 11.598(6), c = 41.34(4), β = 100.90°(7), V = 9308Å3, Z = 4, R = 0.071 for 6746 reflections with I⩾3 σ(I). The water molecules are cheeked by TGA. The organic sublattice forms bidimensional layers along a. Short S⋯S contacts (3.40–4.62Å) are observed. Electrical measurements reveal that the title compound exhibits a metallic behaviour down to 250K where a metal-insulator transition occurs.
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