化学
烟气脱硫
铬
反应性(心理学)
配体(生物化学)
有机硫化合物
键裂
加氢脱硫
背景(考古学)
硫黄
金属
氧化还原
药物化学
劈理(地质)
离子
钼
立体化学
组合化学
无机化学
有机化学
催化作用
岩土工程
断裂(地质)
生物化学
医学
替代医学
生物
工程类
受体
病理
古生物学
作者
Kaiji Shen,Marcello Gennari,Christian Philouze,Ajdin Velić,Serhiy Demeshko,Franc Meyer,Carole Duboc
标识
DOI:10.1021/acs.inorgchem.4c00402
摘要
The cleavage of C–S bonds represents a crucial step in fossil fuel refinement to remove organosulfur impurities. Efforts are required to identify alternatives that can replace the energy-intensive hydrodesulfurization process currently in use. In this context, we have developed a series of bis-thiolato-ligated CrIII complexes supported by the L2– ligand (L2– = 2,2′-bipyridine-6,6′-diyl(bis(1,1-diphenylethanethiolate), one of them displaying desulfurization of one thiolate of the ligand under reducing and acidic conditions at ambient temperature and atmospheric pressure. While only 5-coordinated complexes were previously isolated by reaction of L2– with 3d metal MIII ions, both 5- and 6-coordinated mononuclear complexes have been obtained in the case of CrIII, viz., [CrIIILCl], [CrIIILCl2]−, and [CrIIILCl(CH3CN)]. The investigation of the reactivity of [CrIIILCl(CH3CN)] under reducing conditions led to a dinuclear [CrIII2L2(μ-Cl)(μ-OH)] compound and, in the presence of protons, to the mononuclear CrIII complex [CrIII(LN2S)2]+, where LN2S– is the partially desulfurized form of L2–. A desulfurization mechanism has been proposed involving the release of H2S, as evidenced experimentally.
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