Synthesis and structure of 2-tert-butylphenoxytetraphenylantimony

2-tert-Butylphenoxytetraphenylantimony Ph4SbOC6H4(Bu-t)-2 was prepared by t he reaction of pentaphenyl antimony with 2-tert-butylphenol in toluene at 2 0 degreesC. The structure of the obtained compound was determined by X-ray diffraction. The Sb atom in this compound has a distorted trigonal-bipyrami dal coordination with the aroxy group in the axial position. The Sb-C(Ph)(e q) and Sb-C(Ph)(ax) distances are 2.111(7)-2.138(7) and 2.180(7) Angstrom; the Sb-O and O-C-Ar distances are 2.143(4) and 1.363(8) Angstrom, respectiv ely. The C(Ph)(ax)SbOAr axial angle is 174.1(2)degrees, while the SbOC angl e is 126.7(4)degrees.