Crystal structure of azido(η5-cyclopentadienyl)bis(triphenylphosphane-κP)ruthenium(II) dichloromethane hemisolvate

Abstract

The title solvated complex, [Ru(η5-C5H5)(N3){P(C6H5)3}2]·0.5CH2Cl2, displays a typical piano-stool geometry about the RuIIatom. The bond lengths and angles of the cyclopentadienyl and phosphane ligands are very similar to that of the unsolvated complex [Taqui Khanet al.(1994).Acta Cryst.C50, 502–504]. The azide anion displays similar N—N distances of 1.173 (3) and 1.156 (3) Å and has an N—N—Ru angle of 119.20 (15)°, indicating a greater contribution of the canonical form Ru—N=N(+)=N(-)for the bonding situation. An intramolecular C—H...N hydrogen-bonding interaction between oneorthoH atom of a phosphane ligand and the N atom coordinating to the metal is observed. A similar intermolecular interaction is observed between ametaH atom of a phosphane ligand and the terminal azide N atom of a neighbouring complex. Finally, two C—H...N interactions exists between the H atoms of the dichloromethane solvent molecule and the terminal N atom of two azide anions. The solvent molecule is located about a twofold rotation axis and shows disorder of the Cl atoms with an occupancy ratio of 0.62 (3):0.38 (3).