title: Two square-planar palladium(II) complexes with P,O-bidentate hybrid ligands.
abstract: In the two square-planar palladium(II) complexes chloro[(diphenylphosphinoamino)diphenylphosphine oxide]methylpalladium(II) dimethyl sulfoxide solvate, [Pd(CH3)Cl(C24H21NOP2)].C2H6OS, (I), and chloro{[2-(diphenylphosphino)phenyl]diethoxymethane}methylpalladium(II), [Pd(CH3)Cl(C23H25O2P)], (II), a trans disposition of the diphenylphosphino and chloro groups is observed. The Pd atom in both complexes displays a distorted square-planar configuration formed by the four unique donor atoms (P, Cl, C and O). In compound (I), the five-membered Pd-P-N-P-O metallacycle is best described as having an envelope conformation, whereas in (II) the six-membered Pd-P-C-C-C-O metallacycle adopts a skewed boat conformation. Furthermore, within the P-N-P-O backbone in (I), the P-N distances are consistent with single-bond character [1.659 (3) and 1.692 (3) A], whilst the P=O bond shows appreciable double-bond character [1.509 (2) A].
authors.affiliation: Chemistry Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, England.
authors.forename: Mark R J
authors.initials: MR
authors.lastname: Elsegood
authors.forename: Martin B
authors.initials: MB
authors.lastname: Smith
authors.forename: Sophie H
authors.initials: SH
authors.lastname: Dale