摘要:
The reaction of tetraphenylantimony chloride with sodium perrhenate or potassium chlorate yields tetraphenylantimony perrhenate (I) and tetraphenylantimony chlorate (II), respectively. Complex I was also synthesized from pentaphenylantimony and triphenylantimony diperrhenate in toluene. According to X-ray diffraction, crystals I and II consist of almost regular tetrahedral tetraphenylstibonium cations (CSbC, 109.4(2)degrees - 109.5( 7)degrees in I and 109.1(1)degrees - 109.6(1)degrees in II) and [ReO(4)](-) (OreO, 107.6(3)degrees - 113.3(5)degrees) and [ClO(3)](-) (OClO, 96.3(9)degrees, 116.4(5)degrees) anions, respectively. The average Sb-C bond lengths (2.094(3) angstrom in I, 2.097(2) angstrom in II) are close to the sum of the covalent radii of the Sb and C atoms. The average distances Re-O in complex I (1.672(4)angstrom) and Cl-O in complex II (1.315 angstrom) correspond to multiple bonds.