Octa­methyl­bis­(μ(2)-2-methyl­benzoato-κ(2) O:O′)bis­(2-methyl­benzoato-κO)di-μ(3)-oxido-tetra­tin(IV)

The title compound, [Sn(4)(CH(3))(8)(C(8)H(7)O(2))(4)O(2)], is a distann­oxane derivative of 2-methyl­benzoic acid. The crystal structure is composed of centrosymmetric dimers lying about inversion centres. Both independent Sn atoms adopt distorted trigonal-bipyramidal SnC(2)O(3) coordination geometries with the basal planes consisting of two C-atoms from the methyl groups and a bridging O atom. The Sn—C and Sn—O bond lengths lie in the ranges 2.090 (2)–2.104 (3) and 2.0241 (14)–2.2561 (15) Å, respectively. The central four-membered planar Sn(2)O(2) ring [Sn⋯Sn distance = 3.2993 (2) Å] makes dihedral angles of 5.43 (11) and 59.50 (7)° with the methyl­phenyl groups, which are themselves oriented at a dihedral angle of 61.38 (8)°. Besides weak C—H⋯O and C—H⋯π inter­actions, the packing mainly features van der Waals forces between the mol­ecules.