Octa-n-butyl-1κ(2) C,2κ(2) C,3κ(2),4κ(2) C-bis­(μ-2,3-dibromo­propionato)-1:2κ(2) O:O′,3:4κ(2) O:O′-bis­(2,3-dibromo­propionato)-1κO,3κO-di-μ(3)-oxido-1:2:4κ(3) O:O:O,2:3:4κ(3) O:O:O-tetra­tin(IV)

In the centrosymmetric tetra­nuclear title complex, [Sn(4)(C(4)H(9))(8)(C(3)H(3)Br(2)O(2))(4)O(2)], one of the two independent Sn atoms is five-coordinated by one O atom of the carboxyl­ate anion, two bridging O atoms and two n-butyl groups in a C(2)SnO(3) distorted trigonal bipyramidal geometry. The other Sn atom also has a distorted trigonal bipyramidal geometry, being coordinated by two O atoms of two carboxyl­ate anions, one bridging O atom and two butyl groups. An inter­esting feature of the crystal structure is the short Sn⋯O [2.756 (4) Å] and O⋯O [2.608 (3) Å] inter­actions. The –BrCH(2)—CHBr– segments of the two carboxyl­ate anions are disordered over two positions [site occupancies of 0.60 (1)/0.40 (1) and 0.53 (2)/0.47 (2)]. Weak non-directional C—H⋯O inter­actions lead to the formation of infinte chains along the a axis; other weak inter­molecular C—H⋯π inter­actions are also present.