Synthesis and structures of triphenylbismuth diaroxides Ph₃Bi(OAr)₂, Ar = C₆H₃(Br₂-2,4), C₆H₂(Br₂-2,6)(NO₂-4), and C₆H₂[(NO₂)₃-2,4,6]

Author： Sharutin V. Egorova I. Sharutina O. Pakusina A. Pushilin M.

Publisher： MAIK Nauka/Interperiodica

ISSN： 1070-3284

Source： Russian Journal of Coordination Chemistry, Vol.33, Iss.1, 2007-01, pp. : 12-19

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Abstract

Triphenylbismuth diaroxides Ph₃Bi(OAr)₂ (Ar = C₆H₃(Br₂-2,4) (I), C₆H₂(Br₂-2,6)(NO₂-4) (II), and C₆H₂[(NO₂)₃-2,4,6] (III) are synthesized in yields up to 74% by the reaction of triphenylbismuth with phenols in the presence of hydrogen peroxide (taken at a molar ratio 1: 2: 1, respectively) in ether. According to X-ray diffraction data, the bismuth atoms in compounds I-III have distorted trigonal-bipyramidal coordination with the aroxyl substituents in the axial positions; the Bi-C, Bi-O bond lengths and the OBiO, CBiC angles vary in the intervals 2.162–2.204, 2.150–2.299 Å and 172.4°–176.1°, 109.6°–139.9°, respectively. Compound II exhibits intramolecular contacts between the central atom and ortho-Br atoms (3.924, 4.101 Å), and compound III has similar contacts of the Bi atom with the O atoms of the ortho-nitro groups (3.114, 3.313 Å).