Crystal structure of bis-[μ-2-(diiso-propyl-phosphor-yl)propan-2-olato-κ(3) O (1),O (2):O (1)]bis-[chlorido-oxidovanadium(IV)]

Abstract

The dinuclear mol-ecule of the title complex, [VOCl{μ-OC(Me)2P(iPr)2-κ(2) O}]2 or [V2(C9H20O2P)2Cl2O2], which was obtained due to an unexpected oxidation reaction, is centrosymmetric, with the inversion centre located in the middle of the central V2O2 core. These core O atoms arise from the symmetry-related 2-(diiso-propyl-phosphor-yl)propan-2-olate dianions. The V(IV) atom is additionally bonded to one terminal Cl ligand, the second O atom of the dianion and double bonded to a vanadyl O atom, leading to an overall distorted square-pyramidal VO4Cl coordination polyhedron with the vanadyl O atom as the apex. An intra-molecular C-H⋯Cl contact helps to establish the mol-ecular configuration. In the crystal, mol-ecules are stacked in rows parallel to [001] and are linked by C-H⋯Cl contacts to form chains running in the same direction.

Keywords: binuclear centrosymmetric complex; crystal structure; square-pyramidal coordination geometry; vanadium.

Figure 1

Schematic representation of the attempted formation of a vanadium(III) complex with the PCP ligand.

Figure 2

The mol­ecular structure of the binuclear complex with displacement ellipsoids drawn at the 50% probability level. Unlabelled atoms are generated by symmetry code (−x + 1, −y, −z + 1).

Figure 3

A projection of the crystal structure along [001] showing the stacking of mol­ecules of (1) in this direction.

Figure 4

A hydrogen-bonded chain of mol­ecules extending parallel to [001]. Intra­molecular C—H⋯Cl contacts are given as blue dotted lines and inter­molecular C—H⋯Cl contacts as red dotted lines.