Reactivity of the cationic uranium amide compound [U(η-C5Me5)2(NMe2)(OC4H8)][BPh4]

Article abstract of DOI:10.1016/S0022-328X(97)00053-3

The cationic uranium amide compound [U(Cp * )₂(NMe₂)(THF)][BPh₄] 1 (Cp * = η-C₅Me₅, THF = tetrahydrofuran) was transformed into the heterocyclic metallacycle [(Cp*)₂U(O(CH₂)₄NMe₂(CH₂)₄O)][BPh₄] ·0.5THF 2 in the presence of a catalytic amount of the free amine NR₂H (R = Me, Et). Treatment of 1 with ^tBuNC afforded the isocyanide adduct [U(Cp * )₂(NMe₂)(CN^tBu)₂][BPh₄] 4 whereas reactions with MeCN, CO₂ and CO gave the insertion compounds [U(Cp * )₂(NC{Me}{NMe₂})(THF)][BPh₄] 5, [U(Cp * )₂(O₂CNMe₂)(THF)][BPh₄] 6 and [U(Cp * )₂(η²-CONMe₂)(THF)][BPh₄] 7. The crystal structure of a THF solvate of 4 has been determined. 1997 Elsevier Science S.A.