摘要:
The reactions of tetraphenylstibium nitrate with nitric acid and of tetraphenylstibium acetate with acetic acid yield adducts Ph4SbONO2 center dot HNO3 (I) and Ph4SbOC(O)CH3 center dot CHH3COOH (II). According to X-ray diffraction data, the antimony atom in [Ph4Sb](+)[O2N-O center dot center dot center dot H center dot center dot center dot O-NO2](-) has a tetrahedral coordination. The CSbC bond angles and Sb-C bond lengths vary within 108.04(6)degrees-109.75(4)angstrom and 2.096(1)-2.098(1) angstrom, respectively. The anion includes the intermolecular hydrogen bond O(1)-H(1)center dot center dot center dot O(1)'' the O(1)-H(1), H(1)center dot center dot center dot O(1)'', and O(1)center dot center dot center dot O(1)'' distances are 0.91(4), 1.56(4), and 2.460(2) angstrom, respectively; and the OHO angle is 169(5)angstrom. The nitrate groups are usually planar. Complex II also contains the intermolecular hydrogen bond with the following parameters: O(3)-H(3), 0.92 angstrom; H(3)center dot center dot center dot O(2), 1.68 angstrom; and O(3)center dot center dot center dot O(2) 2.594 angstrom; the O(2)H(3)O(3) angle is 172.1 angstrom. This H-bond noticeable changes the coordination polyhedron of the antimony atom compared to that in tetraphenylstibium acetate.