An N-bridged tritungsten compound for the chemical vapor deposition of WN x thin films

Abstract

In the title compound, octachlorido-1κ4 Cl,3κ4 Cl-di-μ2-nitrido-1:2κ2 N:N;2:3κ2 N:N-tetrapyridine-1κN,2κ2 N,3κN-bis(trimethylsilylimido-2κN)tritungsten(V) dichloromethane disolvate, [W3(C3H9NSi)2Cl8N2(C5H5N)4]·2CH2Cl2, the central W metal atom is located on a twofold rotation axis and is coordinated in a distorted octahedral environment by two trimethylsilylimido groups, two pyridine molecules and two μ-N atoms which bridge it to the two other W atoms. These terminal W centers also show a distorted octahedral coordination, the bridging N atom and the pyridine ligand being trans with respect to each other. Additionally, four Cl atoms are bound to each terminal W atom, in a square-planar geometry, completing the octahedral coordination.