Isolation and Characterization of the Osmium(V)-Imido Complex [Os(V)(Tp)(Cl)(2)(NH)] We are grateful to the National Science Foundation under Grant number CHE-9503738, the Los Alamos National Laboratory (DOE) under Grant Number 10730-001-00-2C, and the Laboratory Directed Research and Development Program for support of this research. M. H. V. Huynh gratefully acknowledges postdoctoral fellowship support from the Directorapos;s Office of Los Alamos National Laboratory. Los Alamos National Laboratory is operated by the University of California for the U.S. Department of Energy under Contract W-7405-ENG-36. We also thank Dr. Paul R. Sharp (Professor of Chemistry, University of Missouri, Columbia, MO, 65211) for the information on transition metal parent imido complexes.