Date Published: June 01, 2012
Publisher: International Union of Crystallography
Author(s): Jens Breunig, Hans-Wolfram Lerner, Michael Bolte.
A new polymorph of the title compound, [Pd2(C8H18P)2(C8H19P)2], has been found. It belongs to the triclinic P-1 space group, whereas the known form [Leoni, Sommovigo, Pasquali, Sabatino & Braga (1992 ▶), J. Organomet. Chem.423, 263–270] crystallizes in the monoclinic C2/c space group. The title compound features a dinuclear palladium complex with a planar central Pd2(μ-P)2 core (r.m.s. deviation = 0.003 Å). The Pd—Pd distance of 2.5988 (5) Å is within the range of a PdI—PdI bond. The molecules of both polymorphs are located on a crystallographic centre of inversion. The molecular conformations of the two polymorphs are essentially identical. The crystal packing patterns, on the other hand, are slightly different.
For synthetic background, see: Dornhaus et al. (2006a ▶,b ▶); Kückmann et al. (2005 ▶); Lerner (2005 ▶); Sänger et al. (2012 ▶). For the monoclinic polymorph of the title compound, see: Leoni et al. (1992 ▶). For the Cambridge Structural Database, see: Allen (2002 ▶).