Dipartimento di Scienze Chimiche, Università di Camerino, Via S. Agostino 1, 62032, Camerino, (MC), Italy.
Dalton Trans. 2009 Sep 21(35):6985-90. doi: 10.1039/b906994a. Epub 2009 Jul 2.
New N-heterocyclic carbene ligand precursors {H(2)C(HTz(R))(2)} and {H(2)C(HIm(R))(2)} (HTz = 1,2,4-triazole; HIm = imidazole; R = PrSO(3) or EtCOO) were obtained starting from the compounds bis(1,2,4-triazol-1-yl)methane and bis(imidazol-1-yl)methane. The related silver(i) carbene complexes were prepared in degassed water solution by treatment of the triazolium or imidazolium species with Ag(2)O, resulting in well-characterized and water soluble bimetallic complexes of general formula {Na(2)H(2)C(Tz(R))(2)Ag(2)} and {Na(2)H(2)C(Im(R))(2)Ag(2)}. In these metallacycles every silver atom is coordinated to two triazolin- or imidazolin-2-ylidene rings, belonging to two different dicarbene units.
新型 N-杂环卡宾配体前体 {H(2)C(HTz(R))(2)} 和 {H(2)C(HIm(R))(2)}（HTz = 1,2,4-三唑；HIm = 咪唑；R = PrSO(3) 或 EtCOO）由化合物双（1,2,4-三唑-1-基）甲烷和双（咪唑-1-基）甲烷起始得到。将三唑鎓或咪唑鎓物种与 Ag(2)O 在脱气水溶液中处理，得到银(i)卡宾配合物，其为具有通式 {Na(2)H(2)C(Tz(R))(2)Ag(2)} 和 {Na(2)H(2)C(Im(R))(2)Ag(2)} 的水溶性良好且表征明确的双金属配合物。在这些金属环中，每个银原子都与两个三唑啉或咪唑啉-2-亚基环配位，这些环属于两个不同的二卡宾单元。
