Reactions of coordinated ligands in uranyl hydroxylaminate complexes

Metal-Involving Synthesis and Reactions of Oximes

“…(1) reacted with the carbonyl species R 1 R 2 CO (2) used as solvents to grant the oximato complexes trans-[UO 2 (R 1 R 2 CNO) 2 (R 1 R 2 CO) 2 ] (3, Scheme 2, a; RT, 12−48 h in air; yields not reported). 90 When the reaction of 1 with a 4-fold excess of PhCHO was performed in Me 2 SO (RT, 12−48 h, under Ar), complex 4a featuring ligated (E)-benzaldoximate was formed (b). Conduct-ing this reaction in neat PhCHO for 7−10 d followed by the addition of excess Me 2 SO yielded 4b with (Z)-configured benzaldoximate (c and d).…”

“…Beirakhov et al reported the generation of oximate ligands at a U VI center by the reaction of carbonyl compounds with coordinated hydroxylaminate. The complex trans -[UO 2 (H 2 NO) 2 (H 2 O) 2 ] ( 1 ) reacted with the carbonyl species R 1 R 2 CO ( 2 ) used as solvents to grant the oximato complexes trans -[UO 2 (R 1 R 2 CNO) 2 (R 1 R 2 CO) 2 ] ( 3 , Scheme , a; RT, 12–48 h in air; yields not reported) …”