title: Estimation of the barrier to rotation of benzene in the (eta 6-C6H6)2Cr crystal via topological analysis of the electron density distribution function.
abstract: The high-resolution X-ray diffraction analysis of the electron density distribution and plane-wave density functional theory has been applied to estimate the lattice energy and barrier to rotation of a benzene ring in the crystal of (eta(6)-C(6)H(6))(2)Cr. Experimental data made it possible to perform analysis of the metal-(pi-ligand) bond and estimate the nature and energy of weak H...H and H...C intermolecular interactions in the crystal. Summation of the intermolecular H...H and H...C interaction energies makes it possible to reproduce the experimental sublimation enthalpy value with high accuracy.
authors.affiliation: A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation. kostya@xray.ineos.ac.ru
authors.forename: Konstantin A
authors.initials: KA
authors.lastname: Lyssenko
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Korlyukov
authors.forename: Denis G
authors.initials: DG
authors.lastname: Golovanov
authors.forename: Sergey Yu
authors.initials: SY
authors.lastname: Ketkov
authors.forename: Mikhail Yu
authors.initials: MY
authors.lastname: Antipin