Abstract
Triphenylantimony diphthalate hydrate (I) has been synthesized by the reaction between triphenylantimony and ortho-phthalic acid in the presence of hydrogen peroxide (molar ratio, 1: 2: 1). According to X-ray diffraction data, the antimony atom in a symmetric molecule of compound I (the SbC3O2 coordinating moiety has point group C 2v ) has a trigonal bipyramidal coordination. The OSbO axial angle and the CSbC angles in the equatorial plane are 179.83(12)° and 106.04(9)°, 147.93(18)°, respectively. The bond length are 2.153(2) (Sb-O), and 2.110(4), 2.120(3) A (Sb-C). Intramolecular Sb…O=C contacts (2.802(3) A) take place in compound I.
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