Complexes of the uranyl ion with bis(diphenylphosphino)methane dioxide

Bis(diphenylphosphino)methane dioxide compounds of uranyl nitrate and uranyl bis(β-diketonates) have been synthesized and characterized by spectroscopic and X-ray diffraction methods. Monodentate, bidentate chelate and bridging bidentate modes of coordination for this ligand have been established from the single-crystal X-ray diffraction studies of its compounds, [UO 2 (DBM) 2 DPPMO], [UO 2 (NO 3 ) 2 DPPMO] and [{UO 2 (DBM) 2 } 2 DPPMO], respectively.