Crucial role of Ru⋯H interactions in the crystal packing of ruthenocene and its derivatives

Abstract

The peculiarities of crystal packing of ruthenocene (η5-C5H5)2Ru and its derivatives were investigated by means of high resolution X-ray diffraction analysis of electron density distribution and analysis of the Cambridge Structural Database. The combination of experimental data and statistical treatment made it possible to conclude that the increase of the M⋯Cp separation in ruthenocene and its derivatives leads to the principally different system of intermolecular contacts preventing crystal disorder as compared to 3d-metallocenes.