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Contributions to the Chemistry of Boron, 233 . Reactions of a 1,2,3,4‐Diphosphadiboretane with Some Carbonylmetal Compounds
Author(s) -
Grundei Stefan,
Nöth Heinrich,
Paine Robert T.
Publication year - 1996
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.19961291015
Subject(s) - chemistry , norbornadiene , boron , ligand (biochemistry) , molecule , metal , medicinal chemistry , stereochemistry , x ray crystallography , crystallography , organic chemistry , diffraction , catalysis , biochemistry , physics , receptor , optics
1,2‐Di‐ tert ‐butyl‐3‐(diisopropylamino)‐4‐(dimethylamino)‐ 1,2,3,4‐diphosphadiboretane ( 1 ) reacts with Fe 2 (CO) 9 to give two isomeric tetracarbonyliron complexes 2, 3 with P–Fe bonds and a bis(tetracarbonyliron) complex 4 . In contrast, 1 displaces the olefinic ligand from tetracarbonyl(η 4 ‐norbornadiene)metal (metal = Cr, Mo) to form the tetracarbonylmetal complexes 5 and 6 with a rearranged ligand molecule, i.e. a 1,3,2,4‐diphosphadiboretane. This process is accompanied by a change of the tert ‐butyl groups from an anti orientation in 1 to a syn orientation in 5 as shown by X‐ray crystallography.