Synthesis, molecular, crystal and electronic structure of [RuCl3(NO)(PPh3)(HPz)]

New ruthenium nitrosyl complex [RuCl3(NO)(PPh3)(HPz)] has been obtained in the reaction of [RuCl3(NO)(PPh3)2] with pyrazole. The complex has been characterized by IR and UV-Vis spectroscopy. The X-ray structure of the compound has been determined. The geometric parameters and UV-Vis spectrum of investigated complex have been examined using the density functional theory method.