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Synthesis and Crystal Structures of New Antimony Polysulfido Complexes: [P(C6H5)4]3Sb3S25 and [P(C6H5)4]2Sb2S15 · 2(C3N2H6)

✍ Scribed by Michael Schur; Wolfgang Bensch

Publisher
John Wiley and Sons
Year
1998
Tongue
German
Weight
322 KB
Volume
624
Category
Article
ISSN
0372-7874

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✦ Synopsis

Reaction of elemental antimony with sulfur under mild hydrothermal conditions yielded different polysulfidoclusters of antimony. These were isolated as tetraphenylphosphonium salts [P(C 6 H 5 ) 4 ] 3 Sb 3 S 25 and [P(C 6 H 5 ) 4 ] 2 Sb 2 S 15 2(C 3 N 2 H 6 ) and their crystal structures were determined. In the first compound two different polysulfide anions are observed, Sb 2 S 17 2± and Sb 2 S 16 2± , whereas the second contains the Sb 2 S 15 2± complex. These dinuclear anions show as a common building principle two w-trigonal bipyramidal coordinated Sb centers bridged by two S x 2± units and an additional S x 2± chelate ligand bound to each Sb center giving a tricyclic structure.

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Two new 1,2,3,5-dithiadiazoles, [4-(4Ј-C 5 H 4 N)CN 2 S 2 ] (L 1 ) and [4-(3Ј-C 5 H 4 N)CN 2 S 2 ] (L 2 ), with different pyridyl groups at the 4-position were prepared. As Lewis bases, the dithiadiazoles reacted with Lewis acids via their pyridyl groups to form acid-base adducts with retention of t