SYNTHESIS AND CRYSTAL-STRUCTURE OF BIS-(TRIPHENYLANTIMONY CATECHOLATE) HYDRATE - NEW SQUARE-PYRAMIDAL ANTIMONY(V) COMPOUND
Additional Document Info
Reaction between triphenylantimony dichloride and catechol in the presence of ammonia yields the partially hydrated product (Ph3SbO2C6H4)2.H2O, the crystal structure of which has been determined by single-crystal X-ray diffraction methods. The compound, bis(2,2,2-triphenyl-1,3,2-benzodioxastibole) hydrate, crystallized in the monoclinic space group P21/c with cell constants a = 9.78 (1) , b = 21.10 (1) , c = 19.95 (1) , = 105.28 (5), Z = 4. Antimony atoms in both five- and sixfold coordination are present with the central atom in the former being attached to three carbon and two oxygen atoms in a distorted square-pyramidal arrangement. Distortion of this polyhedron arises basically from the presence of the dioxo chelating group. The second polyhedron is distorted octahedral and is derived from the square-pyramidal arrangement above with the addition of a water molecule weakly coordinated in the sixth position. 1980, American Chemical Society. All rights reserved.