Preparation of [tris(1,3-dithiole-2-thione-4,5-dithiolato)antimonate(1−)] complexes, [Sbv(dmit)3]−. Crystal structure of the 1,4-DIMETHYLPYRIDINIUM (cas 18241-35-5) salt

Add time:08/02/2019    Source:sciencedirect.com

Ionic complexes, [Q] [Sb(dmit)3] [Q = 1,4-Me2-pyridinium of NEt4], have been isolated from the reaction of [Q]2 [Zn(dmit)2] and SbI5, prepared in situ from SbI3 and I2 (H2-dmit = 4,5-dimercapto-1,3-dithiole-2-thione). A crystal structure determination of [1,4-Me2-pyridinium] [Sb(dmit)] revealed that the anions contain octahedral Sb atoms, with SbS bond lengths between 2.504(1) and 2.553(1) Å. The chelate bite angles are in the range 80.30(4)–83.50(5)°. Sulfur-sulfur contacts, at distances less than the van der Waals radii, link the anions into a 3-D (three-dimensional) framework: each of the three dmit ligands in an anion have weak S−−−S interactions with neighboring anions.

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