| Abstrakt: |
The solvates of tris(4-fluorophenyl)antimony diaryloxides with benzene, (4-FCH)Sb(OAr) • 1/2PhH (Ar = CHCl-4 ( I), CHBr-4 ( II), and CHBr-2,4 ( III)), were prepared by the reaction of tris(4-fluorophenyl)antimony with 4-chlorophenol, 4-bromophenol, and 2,4-dibromophenol in diethyl ether in the presence of tert-butyl hydroperoxide followed by recrystallization from a benzene-heptane mixture (2: 1). The antimony atoms in I, II, and III form a distorted trigonal-bipyramidal coordination with oxygen atoms in axial positions (CIF files CCDC nos. 1047500 ( I), 1048172 ( II), 1048212 ( III)). The OSbO angles are 177.23(8)° ( I), 177.34(12)° ( II), and 179.47(16)° ( III). The Sb-O and Sb-C bond lengths are 2.0519(16), 2.0508(18), and 2.105(2)-2.121(2) Å ( I); 2.045(3), 2.055(3), and 2.105(4)-2.126(4) Å ( II); and 2.066(3), 2.058(3), and 2.100(6)-2.107(5) Å ( III). The structural organization in crystals I- III is formed by weak intermolecular C−H•••F hydrogen bonds (H•••F 2.52 Å ( I), 2.52 Å ( II), and 2.61 and 2.51Å ( III)). [ABSTRACT FROM AUTHOR] |
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