led to the formation of the 1,2,4-triazoline-5-thione ring and to the 1,2,4-triazolium-5-thiolate ring. The formation of the mesoionic componds is due to rearrangement of the easily available 2,4-disubstituted thiosemicarbazides to 1,4-disubstituted thiosemicarbazides under the reaction conditions adopted. This method can be usefully used for the synthesis of mesoionic compounds, especially in the case
Gold(I) coordination compounds with mesoionic thiolate ligands and the crystal and molecular structure of bis(1,4,5-trimethyl-1,2,4-triazolium-3-thiolate)gold(I) tetrafluoroborate
作者:Joseph C. Deaton、Henry R. Luss
DOI:10.1039/a903597d
日期:——
Two-coordinate gold(I) complexes involving mesoionic thiolate ligands have been synthesized, including homoleptic and mixed-ligand complexes. Many of these compounds have stability and solubility properties that are desirable for practical use as gold sensitizers for photographic silver halide dispersions. The crystalstructure of bis(1,4,5-trimethyl-1,2,4-triazolium-3-thiolate)gold(I) tetrafluoroborate