Syntheses and Characterisation of Amide Adducts of Uranyl Bis (β-Diketonates) the Molecular Structure of [UO 2 (DBM) 2 .C 4 H 9 CON( 3 -C 5 H 11 ) ( sec -C 4 H 9 )]

The first structurally characterised uranyl bis (β-diketonate)-amide adduct compound [UO 2 (DBM) 2 . C 4 H 9 CON ( 3-C 5 H 11 ) ( sec-C 4 H 9 )] (DBM = dibenzoylmethanate) shows that the amide ligand bonded through its amido oxygen atom to the uranyl group. The average bond distances for U–O (uranyl) , U–O (DBM) and U–O (amide) are 1.778(5), 2.346(5) and 2.411(5)Å respectively.