New preparation method of chlorotriphenylantimony aryloxides Ph3SbCl(OAr)

Abstract

The reaction of bis(2,6-dichlorophenoxo)triphenylantimony with triphenylantimony dichloride gave chloro(2,6-dichlorophenoxo)triphenylantimony Ph₃SbCl(OC₆H₃Cl₂-2,6) (I). 2,6-Dichlorophenoxotetraphenylantimony Ph₄Sb(OC₆H₃Cl₂-2,6) (II) was prepared from pentaphenylantimony and bis(2,6- dichlorophenoxo)triphenylantimony. According to X-ray diffraction data, the antimony atoms in I and II have a distorted trigonal-bipyramidal coordination with the following axial: OSbCl, 179.59(5)° (I); CSbO, 178.20(14)° (II); the equatorial angles are 115.72(9)°–124.87(10)° (I) and 111.43(18)°–123.18(19)° (II); the equatorial bond lengths are Sb–C, 2.099(3)–2.111(2) Å (I), 2.111(4)–2.122(5) Å (II); and the axial bond lengths are Sb–Cl, 2.4740(7) Å; Sb–O, 2.0802(16) Å (I); Sb–O, 2.237(3) Å; and Sb–C, 2.167(4) Å (II) (CIF files CCDC no. 998625 for I and no. 1010553 for II).