Sulfonate- or carboxylate-functionalized N-heterocyclic bis-carbene ligands and related water soluble silver complexes

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 pr...

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Published inDalton transactions : an international journal of inorganic chemistry no. 35; pp. 6985 - 6990
Main Authors Papini, Grazia, Pellei, Maura, Gioia Lobbia, Giancarlo, Burini, Alfredo, Santini, Carlo
Format Journal Article
LanguageEnglish
Published England 01.01.2009
Subjects
Carboxylic Acids - chemistry
Heterocyclic Compounds - chemistry
Ligands
Methane - analogs & derivatives
Methane - chemistry
Molecular Structure
Organometallic Compounds - chemical synthesis
Organometallic Compounds - chemistry
Silver - chemistry
Solubility
Stereoisomerism
Sulfonic Acids - chemistry
Water - chemistry
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Summary: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)](2)Ag(2)} and {Na(2)[H(2)C(Im(R))(2)](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.
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ISSN:1477-9226
1477-9234
DOI:10.1039/b906994a