Imidazolium salts incorporating functional groups on the cation and/or anion, represent a class of compounds having great versatility due to their wide range of applications as task specific ionic liquids (ILs)1 or N-heterocyclic carbene precursors (NHCs)2. Recently our research in this field has been dealing with the high-purity synthesis of (Boc)-protected and deprotected amino-functionalized imidazolium cation [NHR1CH2CH2ImR2]+ ([1]+, R1 = Boc, H; R2 = Me, Bz, Allyl) and related NHC-Ag(I) silver complexes3. In this contribution we show that [NH2CH2CH2ImMe]+ can play a dual role in gold chemistry. It has been employed to give the novel gold(III)-aminoethyl imidazolium aurate salt [Cl3AuNH2(CH2)2ImMe)][AuCl4] (2) used in the preparation of catalytically active gold nanoparticle-containing polycarbonate membranes or ITO glasses4. In addition [NH2CH2CH2ImMe]+ acts as a NHC precursor and by reacting the corresponding NHC-Ag(I) carbene with ClAu(tht) the dimeric, photoluminescent complex 3 shown in Figure is obtained.
M.C. Cassani, B. Ballarin, M. Blosi, L. Busetto, S. Albonetti (2010). Aminofunctionalized imidazolium salts: dual role players in gold chemistry. TRIESTE : Società Chimica Italiana.
Aminofunctionalized imidazolium salts: dual role players in gold chemistry
CASSANI, MARIA CRISTINA;BALLARIN, BARBARA;BLOSI, MAGDA;BUSETTO, LUIGI;ALBONETTI, STEFANIA
2010
Abstract
Imidazolium salts incorporating functional groups on the cation and/or anion, represent a class of compounds having great versatility due to their wide range of applications as task specific ionic liquids (ILs)1 or N-heterocyclic carbene precursors (NHCs)2. Recently our research in this field has been dealing with the high-purity synthesis of (Boc)-protected and deprotected amino-functionalized imidazolium cation [NHR1CH2CH2ImR2]+ ([1]+, R1 = Boc, H; R2 = Me, Bz, Allyl) and related NHC-Ag(I) silver complexes3. In this contribution we show that [NH2CH2CH2ImMe]+ can play a dual role in gold chemistry. It has been employed to give the novel gold(III)-aminoethyl imidazolium aurate salt [Cl3AuNH2(CH2)2ImMe)][AuCl4] (2) used in the preparation of catalytically active gold nanoparticle-containing polycarbonate membranes or ITO glasses4. In addition [NH2CH2CH2ImMe]+ acts as a NHC precursor and by reacting the corresponding NHC-Ag(I) carbene with ClAu(tht) the dimeric, photoluminescent complex 3 shown in Figure is obtained.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
