A ladder - like tetranuclear organooxotin cluster [ ( μ - 0 ) ( μ - OMe ) ( 6 - nrC9 H4 02 CO2 ) ( Bn2 Sn) 2 ] 2 has been synthesized via the debenzylation reaction of tribenzyhin chloride with 6 - bromocoumarin - 3 - carboxylic acid, and its structure was characterized by IR, elemental analysis and X - ray single crystal diffraction. The results show a center of symmetry for the complex is coincident with the four -membered central endocyclic Sn202 unit, and each tin atom is...