Bis(1-{bis[2-(diphenylphosphinoyl)ethyl]phosphanyl}-2-(diphenylphosphanyl)ethane)dinitratoplatinum(II) methanol tetrasolvate

Abstract

In the title compound, [Pt(NO3)2(C42H42O2P4)2]·4CH3OH, the Pt atom positioned on a crystallographic centre of inversion. The two symmetry-equivalent nitrate anions are weakly coordinated to the PtII ion, creating, together with four P ligand atoms, a distorted octa­hedral coordination environment. In addition, several close C—H⋯O contacts between the nitrate O atoms and phenyl H atoms are found. Hydrogen bonds from two methanol solvent mol­ecules to one of the O—P groups complete the crystal structure.

Chlorido{[2-(dicyclohexylphosphanoyl)ethyl]bis[2-(dicyclohexylphosphanyl)ethyl]phosphane}platinum(II) chloride dichloromethane hemisolvate tetrahydrate

“…The Pt II centre is tetracoordinated revealing a slightly distorted square-planar coordination geometry (Brüggeller et al, 1992). The phosphane oxide group of the ligand is not coordinated to the Pt II centre in the solid state (Rieckborn et al, 2008).…”

“…For related literature on Pt II complexes, see: Brü ggeller et al (1992). For the structure of a related phosphane Pt II complex with pendant P=O groups, see: Rieckborn et al (2008). For selective activation of molecular oxygen by platinum complexes, see: Aizawa et al (2005); Poverenov et al (2008).…”

“…Selective activation of molecular oxygen by platinum complexes is an active field of current research (Aizawa et al 2005;Poverenov et al 2008). Platinum II complexes with pendant phosphane ligands are able to activate molecular oxygen revealing an oxidized phosphane group (Aizawa et al 2005;Rieckborn et al 2008) (Figure 1). The Pt II centre is tetracoordinated revealing a slightly distorted square-planar coordination geometry (Brüggeller et al, 1992).…”