Dicyclohexyltin quinoline-2-carboxylate [Cy4Sn2(μ-OH)2(C9NH6CO2)2] ·2[Cy2Sn(C9NH6CO2)2]. 2H2O was synthesised by the reaction of tricyclohexyltin hydroxide with quinolinecarboxylic acid. The crystal structures have been determined by X-ray diffraction. It belongs to triclinic system, space group P1̄. In the unit cell, there are two different kinds of composition and structure of the dicyclohexyltin quinoline-2-carboxylate complex molecules. some of the tin atoms are five-coordination distorted tigonal bipyramidal structure, others are six co...