Synthesis and structure of Zr 2Cl 4(η 6-C 6H 5PMe 2) 2(PMe 2Ph) 2, an arene complex of zirconium(II)

Abstract

The title compound consists of two identical subunits, (PMe 2Ph)CI 2Zr(η 6-C 6H 5PMe 2), connected by the coordination of the phosphorus atom of each (η 6-C 6H 5PMe 2) moiety to the zirconium atom of the other. There are two crystallographically distinct molecules, each on a 1 position, in the unit cell. In each a pyramidal trans-ZrP 2Cl 2 unit has an η 6- arene ring opposite and approximately parallel to the mean plane of the P 2Cl 2 set of atoms. The crystals are isotypic to those of the previously reported Hf 2Br 4(η 6- C 6H 5PMe 2) 2(PMe 2Ph) 2. They are triclinic, P 1 with a=9.172(2), b=13.710(2), c=15.458(1) Å, α=1,01.47(1), β=91.74(1), θ=98.21(1)°, V=18 82.1(4) Å 3, Z=2. The Zr to carbon distances are in the range 2.29–2.52 Å, the mean Zr-Cl distance is 2.506112] Å and the Zr-P distances are in the range 2.759(2)-2.771(2) Å.