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.

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.
B. Ballarin; L. Busetto; M.C. Cassani; C. Femoni
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/89295
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