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Thesis (M.S.)—University of Nebraska—Lincoln, 1973. Department of Chemistry.


Copyright 1973, the author. Used by permission.


Interest in the chemistry of transition metal hydrides is presently at a very high level.Previous investigations have examined the nature of the metal-hydrogen bond, new synthetic routes for the preparation of hydride complexes, and the mechanisms of reaction which are catalyzed by metal hydrides. Two major areas of recent interest have been the stereochemistry of transition metal hydrides, and the ability of the metal-hydrogen bond to react reversibly with a number of species.The intention of this thesis was to synthesize a complex of the types of MoH4 (diphos)2 where diphos is a di (tertiary) phosphine that has similar electronic properties to dppe, but would impart better solubility properties upon the final complex, resulting in its satisfactory characterization in solution.One goal was to use nmr temperature results to help explain the stereochemical non-rigidity in eight-coordinate transition metal hydrides.Another goal was to prove the theory that the two separate compounds found by Penella and Hidai, were indentical compounds.If the new complex would also react reversibly with molecular nitrogen, evidence would then be sufficient to correct this ambiguity in the literature.The results reported describes the synthesis, characterization, and some reactions of a new tetrahydridobis (diphosphine) molybdenum complex.

Advisor: T. Adrian George