SEARCH Articles Figures Tables Compounds of Vanadium, Niobium and Tantalum Half-sandwich Imido Compounds of Niobium and Tantalum Hydrofluoride synthesis of niobium and tantalum compounds Niobium complexes, hexahalogeno salts and compounds with alkyl Niobium compounds Related Compounds of Vanadium, Niobium, and Tantalum Synthesis of tantalum and niobium fluoride compounds