Tetrachloroauric acid HAuCl4 reacts with the ionic liquid 1-(2-aminoethyl)-3-methylimidazolium nitrate [NH2(CH2)2ImMe)]NO3, (2b) or its dicationic ammonium salt [NH3(CH2)2ImMe)][NO3]2, (3) in methanolic solutions to give the novel gold(III)-aminoethyl imidazolium aurate salt [Cl3AuNH2(CH2)2ImMe)][AuCl4] (4). The reaction of 4 with [nBu4]Cl gives [NH2(CH2)2ImMe)][AuCl4] (2c) whereas with acetone the dicationic, iminium-functionalized, imidazolium aurate salt [Me2C=N(H)(CH2)2ImMe)][AuCl4]2 (5) has been isolated. The structures in the solid state of 2c, 3, 4, and 5 have been determined by X-ray diffraction. The electrochemical behaviour of 4 has been examined by Cyclic Voltammetry in acetonitrile and compared with 2c and KAuCl4.
B. Ballarin, L. Busetto, M.C. Cassani, C. Femoni (2010). A New Gold(III)-Aminoethyl Imidazolium Aurate Salt: Synthesis, Characterization and Reactivity. INORGANICA CHIMICA ACTA, 363, 2055-2064 [10.1016/j.ica.2010.02.001].
A New Gold(III)-Aminoethyl Imidazolium Aurate Salt: Synthesis, Characterization and Reactivity
BALLARIN, BARBARA;BUSETTO, LUIGI;CASSANI, MARIA CRISTINA;FEMONI, CRISTINA
2010
Abstract
Tetrachloroauric acid HAuCl4 reacts with the ionic liquid 1-(2-aminoethyl)-3-methylimidazolium nitrate [NH2(CH2)2ImMe)]NO3, (2b) or its dicationic ammonium salt [NH3(CH2)2ImMe)][NO3]2, (3) in methanolic solutions to give the novel gold(III)-aminoethyl imidazolium aurate salt [Cl3AuNH2(CH2)2ImMe)][AuCl4] (4). The reaction of 4 with [nBu4]Cl gives [NH2(CH2)2ImMe)][AuCl4] (2c) whereas with acetone the dicationic, iminium-functionalized, imidazolium aurate salt [Me2C=N(H)(CH2)2ImMe)][AuCl4]2 (5) has been isolated. The structures in the solid state of 2c, 3, 4, and 5 have been determined by X-ray diffraction. The electrochemical behaviour of 4 has been examined by Cyclic Voltammetry in acetonitrile and compared with 2c and KAuCl4.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
