High Oxidation State Organocobalt Complexes: Synthesis and Characterization of Dihydridodisilyl Cobalt(V) Species We thank the National Institutes of Health (Grant GM 28938) for financial support. C.P.L. thanks the Fonds der Chemischen Industrie, Germany, for a Kekulé fellowship. Allocation of computing time by the North Carolina Supercomputing Center is gratefully acknowledged.