The complexes of(carboxylato) Ag(Ⅰ)(1,3,4,5-tetramethylimidazol-2-ylidenes)(complexes ??-??) were prepared by the reaction of silver carboxylates with 1,3,4,5-tetramethylimidazol-2-ylidenes as ligands. The products were characterized by ^1H/^13C-NMR...
The complexes of(carboxylato) Ag(Ⅰ)(1,3,4,5-tetramethylimidazol-2-ylidenes)(complexes ??-??) were prepared by the reaction of silver carboxylates with 1,3,4,5-tetramethylimidazol-2-ylidenes as ligands. The products were characterized by ^1H/^13C-NMR, FT-IR, UV and elemental analysis. Especially comples ?? consisted of the monomeric units arranged on the same plane on the basis of the result for X-ray crystallographic analysis. The oxygen in carboxylates moiety is asymmetric with respect to silver atom. In the ^13C-NMR spectrum, the carbenenic carbon atom in the complexes is shifted upfield by ca. 34.5-39.7 ppm.