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A Phosphine Complex of Bismuth(III): X‐ray Crystal Structure of [PMe 3 H][Bi 2 Br 7 (PMe 3 ) 2 ]
Author(s) -
Clegg William,
John Errington R.,
Fisher George A.,
Green Marjorie E.,
Hockless David C. R.,
Norman Nicholas C.
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911241115
Subject(s) - chemistry , phosphine , bismuth , crystal structure , bromide , crystallography , octahedron , x ray crystallography , monomer , ligand (biochemistry) , stereochemistry , inorganic chemistry , diffraction , organic chemistry , catalysis , biochemistry , physics , polymer , receptor , optics
The reaction between BiBr 3 and one equivalent of PMe 3 in THF affords, after recrystallisation from MeCN/Et 2 O, yellow crystals of [PMe 3 H][Bi 2 Br 7 (PMe 3 ) 2 ]. 2 (MeCN) ( 1 ), which has been characterised by X‐ray crystallography. Compound 1 is the first reported bismuth‐phosphine complex and comprises a polymeric anion, the monomeric unit of which contains a planar Bi 2 Br 6 core, each bismuth being further bonded to a PMe 3 ligand and an additional bromide such that the bismuth resides in an octahedral coordination environment. The latter bromides form linear bridges between monomeric units; the phosphines are trans with respect to the Bi 2 unit, with a Bi‐P distance of 2.762(3) A. The reaction between Bil 3 and PEt 3 in THF affords, after recrystallisation from MeCN/Et 2 O, orange crystals of [PEt 4 ] 4 [Bi 6 I 22 ] ( 3 ) which has also been characterised by X‐ray crystallography.