1. J. Organomet. Chem., in press.
2. Study of metal-ligand multiple bonding in osmium and iridium imido complexes: evidence for the cyclopentadienyl-imido analogy
3. The ?closed-shell anion? RN2? is considered a six-electron donor to a dn-metal cation, and the ?nitrene? RN a four-electron ligand to a metal atom. Irrespective of whether the hetero- or homolytic view is favored, a maximum of one ? and two ? bonds to the metal is possible. A comparable statement is valid for the six- and five-electron donors (?5-C5H5)?and(?5-C5H5). In complexes with several competing ? donors, the bond order deviates from the maximum value of 3 depending on the molecular symmetry. The bond description M = NR chosen consistently in this paper includes the high triple-bond component M?NR that is typical for d-electron-poor complexes: Metal-Ligand Multiple Bonds, Wiley, New York, 1988.
4. Transition metal imido complexes
5. MO explanation of the "unexpected" structure of (.eta.5-C5Me5)2Ta(:NC6H5)H