title: Dibromo [N-[2-(diphenylphosphino)benzylidene]-2,6-diisopropylaniline-kappa 2N,]nickel.
abstract: In the title compound, [NiBr(2)(C(31)H(32)NP)], (I), the second reported example of a nickel-iminophosphine N,P-chelate in which the Ni atom has tetrahedral coordination, the Ni coordination is distorted as a consequence of the N-Ni-P chelate bite angle of 91.07 (6) degrees compensated by the Br-Ni-Br angle of 126.385 (18) degrees. In (I) and its analogue, viz. dichloro[[2-(4-isobutyloxazol-2-yl)phenyl]diphenylphosphine-N,P]nickel(II), the Ni-N and Ni-P distances are greater and the N-Ni-P ligand bite angles smaller than those observed in a series of related complexes with square-planar nickel.
authors.affiliation: Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio de Janeiro, 21945-970 Rio de Janeiro, RJ, Brazil.
authors.forename: G L
authors.initials: GL
authors.lastname: Crossetti
authors.forename: C A
authors.initials: CA
authors.lastname: Filgueiras
authors.forename: R A
authors.initials: RA
authors.lastname: Howie
authors.forename: J L
authors.initials: JL
authors.lastname: Wardell
authors.forename: C M
authors.initials: CM
authors.lastname: Ziglio