rac-Dichlorido(1-{(diphenylphosphanyl)[2-(diphenylphosphanyl)phenyl]methyl}ferrocene-κ2P,P′)palladium(II) dimethyl sulfoxide disolvate

Abstract

The racemic title compound, [FePdCl2(C5H5)(C36H29P2)]·2(CH3)2SO, features a Pd-chelating 1,3-diphosphine, which is substituted at a P-bearing asymmetric C atom by a ferrocenyl group. The PdII atom is in a distorted quadratic coordination by two P and two Cl atoms with bond lengths of 2.2414 (3) and 2.2438 (3) Å for Pd—P, and 2.3452 (3) and 2.3565 (3) Å for Pd—Cl. The conformation of the Pd complex is controlled by an intramolecular slipped π–π stacking interaction between a phenyl and a cyclopentadienyl ring with corresponding C...C distances starting at 3.300 (2) Å and the distance between ring centroids being 3.674 (2) Å. The crystal structure is stabilized by C—H...Cl and C—H...O hydrogen bonds. The (CH3)2SO solvent molecules are arranged in layers parallel to (101) and are linked in pairs by C—H...O interactions. One (CH3)2SO molecule is orientationally disordered [occupancy ratio 0.8766 (17):0.1234 (17)] with sulfur in two positions at both sides of its C2O triangle.