Structural Features of Triorganylantimony Dicarboxylates R3Sb[OC(O)R′)]2

Author: Sharutin V. V.   Sharutina O. K.   Pakusina A. P.   Platonova T. P.   Smirnova S. V.   Pushilin M. A.   Gerasimenko A. V.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 1070-3284

Source: Russian Journal of Coordination Chemistry, Vol.29, Iss.11, 2003-11, pp. : 780-789

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Abstract

Triphenylantimony dibenzoate Ph3Sb(O2CPh)2, triphenylantimony bis(methylbenzoates) Ph3Sb(O2CC6H4Me-n)2 (n = 2, 4), and tri-p-tolylantimony bis(trichloacetate) p-Tol3Sb(O2CCCl3)2, whose Sb atoms have trigonal bipyramidal coordination, were studied using X-ray diffraction analysis. The Sb–O bond lengths are equal to 2.119(2) and 2.144(2); 2.115(2); 2.118(2) and 2.127(2); 2.133(2) Å, the Sb···O(=C) intramolecular contacts are equal to 2.797(2) and 2.698(2); 2.845(2); 2.814(2) and 3.030(2); 3.119(2) Å, respectively. The following correlation was found in the structures of triorganylantimony dicarboxylates: the shorter the Sb···O(=C) distances, the greater the equatorial angle on the side of the intramolecular contacts.

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