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Calcium Hydrogenurate Complexes of the Type Ca(C5H3N4O3)2L3 with L = (CH3)2SO or (CH3 )2NCHO

Crystalline, completely anhydrous complexes of the type Ca(C5H3N4O3)2L3, L=(CH3)2SO, (CH3)2NCHO, has been prepared by the reaction of calcium hydrogenurate hexahydrate with dimethyl sulfoxide (DMSO)and N, N-dimethylformamide (DMF). The moisture-sensitive substances are not isostructural with calcium hydrogenurate hexahydrate. Infrared spectral evidence indicates coordination of the urate anions as well as dimethyl sulfoxide or N, N-dimethylformamide molecules to calcium atoms. These species belong to a limited number of complex salts with coordinated urate ligand.

calcium hydrogenurate ; complexes ; coorrdination ; dimethyl sulfoxide ; N ; N-dimethylformamide

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