The Synthesis,Crystal, Molecular and Electronic Structure of [ReCl2(NO)(py)3]

In line with our investigations of rhenium nitrosyl complexes, we have studied the reaction of ReCl₃(NO)(OPPh₃)(PPh₃)] with pyridine. The ReCl₂(NO)(py)₃] complex obtained in this reaction has been characterised by IR, electronic spectra and magnetochemical measurements; ligand field parameters and the electronic structure have been determined. The crystal and molecular structure of ReCl₂(NO)(py)₃] has been solved by the heavy atom method. Crystals of ReCl₂(NO)(py)₃] contain distorted octahedral molecules with the pyridine ligands in the mer-arrangement. The nitrosyl group is coordinated linearly to the rhenium atom as NO⁺.