Synthesis, spectral characterization and crystal structure of a novel trinuclear di-n-butyltin(iv) complex with pyruvic acid-n(4)-cyclohexylthiosemicarbazone (h(2)pact) by Salam, M. A., Affan, M. A., Ahmad, Fasihuddin, Jusoh, I., Shamsuddin, Mustaffa, Yamin, Bohari, Yang Farina, Yang Farina