INTERACTION OF PENTAPHENYLANTIMONY WITH ACETYLENEDICARBOXYLIC ACID. MOLECULAR STRUCTURE OF BIS(TETRAPHENYLANTIMONY) ACETYLENEDICARBOXILATE
Keywords:
pentaphenylantimony, acetylenedicarboxylic acid, bis(tetraphenylantimony) acetylenedicarboxilate, molecular structure, X-ray diffraction analysisAbstract
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 Ph4Sb 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.
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