Octa-n-butyl-1?C,2?C,3?,4?C-bis-(?-2,3-dibromo-propionato)-1:2?O:O',3:4?O:O'-bis-(2,3-dibromo-propionato)-1?O,3?O-di-?(3)-oxido-1:2:4?O:O:O,2:3:4?O:O:O-tetra-tin(IV).

ABSTRACT: In the centrosymmetric tetra-nuclear 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 carboxyl-ate 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 carboxyl-ate anions, one bridging O atom and two butyl groups. An inter-esting feature of the crystal structure is the short Sn?O [2.756?(4)?Å] and O?O [2.608?(3)?Å] inter-actions. The -BrCH(2)-CHBr- segments of the two carboxyl-ate 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 inter-actions lead to the formation of infinte chains along the a axis; other weak inter-molecular C-H?? inter-actions are also present.

SUBMITTER: Win YF 

PROVIDER: S-EPMC2959824 | biostudies-other | 2008

REPOSITORIES: biostudies-other