56764-46-6Relevant articles and documents
Iridium(I) complexes of π-acidic carboxamides
Bohle, D. Scott,Chua, Zhijie
, p. 1074 - 1084 (2015)
The silver salts of the conjugate bases of the nitrogen acids N-nitroacetamide (Ag[CH3C(O)NNO2] (1)), N-nitrocarbamate (Ag[R′OC(O)NNO2], R′ = CH3 (2), C2H5 (3)), N-nitrosomethylcarbamate (Ag[CH3OC(O)NNO] (4)), and N-nitro-p-tolylsulfonamide, (Ag[p-tolylSO2NNO2] (5)) react with trans-Ir(Cl)(CO)(PPh3)2 (Vaskas complex) to give trans-Ir(η1-nitrogen acid)(CO)(PPh3)2 complexes (6-10). The related silver amides dinitramide and bistriflimide also react with trans-Ir(Cl)(CO)(PPh3)2, to give trans-Ir[η1-N(NO2)2](CO)(PPh3)2 (11) and the unusual silver adduct [trans-Ir(Cl)(CO)(PPh3)2][Ag[N(SO2CF3)2]] (12), respectively. The reaction of trimethylsilyl bistriflimide, prepared in situ from trimethylsilyl bromide and Ag[N(SO2CF3)2] in acetonitrile, and Ir(F)(CO)(PPh3)2 gives [trans-Ir(CH3CN)(CO)-(PPh3)2][N(SO2CF3)3] (13). The molecular structures of these complexes are all square planar, with the exception of 12, which is square pyramidal with the AgX ligand in the apical position. Complexes 6-9, 12, and 13 are stable to air in solution, while 10 and 11 are reactive toward oxygen.
