Interaction of pentaphenylantimony with acetylenedicarboxylic acid. Molecular structure of bis(tetraphenylantimony) acetylenedicarboxilate

V Sharutin, O Sharutina, J Gubanova
2015 Bulletin of the South Ural State University series Chemistry  
Bis(tetraphenylantimony) acetylenedicarboxilate (1) has been synthesized by the interaction of pentaphenylantimony with acetylenedicarboxylic acid (mole ratio 2:1 or 1:1) in toluene. In molecule 1 the acid anion has the bridging role and bonds Ph 4 Sb fragments. The antimony atoms have distorted trigonal bipyramidal coordination with the oxygen atom in the axial position. The Sb-O bond lengths are 2.287(4) and 2.389(4) Å, the Sb-C bond lengths are 2.110(7)2.179(6) Å and 2.108(6)2.165(6) Å.
doi:10.14529/chem150405 fatcat:jgnkzvumhbag5hegwxaz6ezsye