title: New palladium complexes with phosphino- and phosphinitopyridine ligands.
abstract: Three new palladium complexes containing a difunctional P,N-chelate, namely tris(chloro{[1-methyl-1-(6-methyl-2-pyridyl)ethoxy]diphenylphospine-kappa(2)N,P}methylpalladium(II)chloroform solvate, 3[Pd(CH(3))Cl(C(21)H(22)NOP)].CHCl(3), (III), dichloro[2-(2,6-dimethylphenyl)-6-(diphenylphosphinomethyl)pyridine-kappa(2)N,P]palladium(II), [PdCl(2)(C(26)H(24)NP)], (IV), and chloro[2-(2,6-dimethylphenyl)-6-(diphenylphosphinomethyl)pyridine-kappa(2)N,P]methylpalladium(II), [Pd(CH(3))Cl(C(26)H(24)NP)], (V), are reported. Geometric data and the conformations of the ligands around the metal centers, as well as slight distortions of the Pd coordination environments from idealized square-planar geometry, are discussed and compared with the situations in related compounds. Non-conventional hydrogen-bond interactions (C-H...Cl) have been found in all three complexes. Compound (III) is the first six-membered chloro-methyl-phosphinite P,N-type Pd(II) complex to be structurally characterized.
authors.affiliation: Laboratoire de Chimie de Coordination, UMR CNRS 7177, Université Louis Pasteur, 4 rue Blaise Pascal, 67070 Strasbourg Cedex, France.
authors.forename: Magno
authors.initials: M
authors.lastname: Agostinho
authors.forename: Andrei
authors.initials: A
authors.lastname: Banu
authors.forename: Pierre
authors.initials: P
authors.lastname: Braunstein
authors.forename: Richard
authors.initials: R
authors.lastname: Welter
authors.forename: Xavier
authors.initials: X
authors.lastname: Morise