Journal
CHINESE JOURNAL OF INORGANIC CHEMISTRY
Volume 38, Issue 8, Pages 1593-1600Publisher
CHINESE CHEMICAL SOC
DOI: 10.11862/CJIC.2022.151
Keywords
CO-releasing molecules; diiron carbonyl complex; ligand exchange reaction; precipitation prevention; CO-release tuning
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In this study, three water-soluble compounds containing a thiol group were used to initiate CO-release from a diiron hexacarbonyl complex. By using EDTA as a solubilizing agent, precipitate formation during the CO-releasing process was prevented and CO-release from the complex was facilitated. Despite the presence of thiol functional groups in the chosen ligands, their behaviors in promoting CO-release differed.
In this work, three water-soluble compounds (tiopronin, cysteamine, and mercaptoglycerol) which contain a thiol group have been used to initiate CO-release from a diiron hexacarbonyl complex [Fe-2(mu-SCH2CH(OH)CH2 (OH))(2)(CO)(6)] (1). To overcome forming precipitates during the CO-releasing process, we investigated using ethylene-diaminetetraacetic acid (EDTA) as the agent to solubilize products derived from the decomposition. Our results suggest that EDTA not only successfully prevents the CO-releasing system from forming precipitates, but also synergistically facilitates the CO-release from complex 1. Despite the fact that the chosen ligands possess a thiol functional group, their behaviors in promoting the CO-release
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