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metal-organic compounds
The reaction of antimony chloride, sulfur and tetraphenylphosphonium bromide in an aqueous ammonia solution under hydrothermal conditions yields orange crystals of bis(tetraphenylphosphonium) -sufido--tetrasulfido-S1:S4-bis[(pentasulfido-S1,S5)antimonate], [(C6H5)4P]2[Sb2S15]. The structure contains tricyclic molecular Sb2S152- anions built up of two distorted -trigonal bipyramidally coordinated antimony centres which are connected by two Sx2- units (x = 1,4) and bound to an additional S52- ligand.