title: Orbital contributions to the molecular charge and energy density distributions in Co2(CO)8.
abstract: For Co2(CO)8, the representative of a whole class of bridged cobalt complexes, the 18-electron rule predicts a direct metal-metal bond in addition to the metal-bridge bonds. By intuition, this bond should have bent-bond character. However, it is well-known from charge density analyses that no bond critical point exists in the corresponding spatial region. Otherwise, the energy density distribution points to a certain stabilizing contribution of this local area to the total molecular energy. It is shown that a partitioning of the total charge and energy densities into orbital contributions can lead to a deeper insight into complex bonding properties.
authors.affiliation: Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, D-04103 Leipzig, Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Kluge
authors.forename: Markus
authors.initials: M
authors.lastname: Finger
authors.forename: Joachim
authors.initials: J
authors.lastname: Reinhold