Catalytic catechol oxidation by copper complexes: development of a structure–activity relationship
作者:Erica C. M. Ording-Wenker、Maxime A. Siegler、Martin Lutz、Elisabeth Bouwman
DOI:10.1039/c5dt01041a
日期:——
High activity for the catalytic oxidation of 3,5-di-tert-butylcatechol was achieved with complexes of ligands that stabilize the biomimetic CuII μ-thiolate complex, hinting at a similarity with the required Cu-oxo intermediates.
Cobalt(II)-disulfide compounds with the unusual PF2O2– anion. ligand-dependent redox conversion to a cobalt(III)-thiolate complex
作者:Feng Jiang、Christian Marvelous、Amaya C. Verschuur、Maxime A. Siegler、Simon J. Teat、Elisabeth Bouwman
DOI:10.1016/j.ica.2022.120880
日期:2022.5
whereas in [CoII2(L1SSL1)(NO3)4] the geometries are distorted trigonal bipyramidal. The cobalt(II) centers in [CoII2(LxSSLx)(PO2F2)2](PF6)2 are coordinated by three nitrogen and one sulfur donor atom of the disulfide ligand, and two oxygen atoms of two bridging difluoridophosphate anions. The cobalt(II) centers in [CoII2(L1SSL1)(NO3)4] are coordinated by three nitrogen donors of the ligand and three oxygen
在此我们描述了二硫化钴(II)化合物[Co II 2 (L x SSL x )(μ–PO 2 F 2 ) 2 ](PF 6 ) 2和[Co II 2 (L x SSL x )( NO 3 ) 4 ] ( x = 1: 二-2-(双(2-吡啶基甲基)氨基)-乙基二硫化物; x = 2: 二-2-((6-甲基-2-吡啶基甲基)(2-吡啶基甲基)氨基)-乙基二硫化物)。晶体结构显示 [Co II 2 (L x SSL x ) 中的钴 (II) 中心)(μ-PO 2 F 2 ) 2 ](PF 6 ) 2为扭曲的八面体几何形状,而在 [Co II 2 (L 1 SSL 1 )(NO 3 ) 4 ] 中,几何形状为扭曲的三角双锥体。[Co II 2 (L x SSL x )(PO 2 F 2 ) 2 ](PF 6 ) 2中的钴 (II) 中心由二硫化物配体的三个氮和一个硫供体原子以及两个桥连二氟磷酸根阴离子的两个氧原子配位。[Co
Redox Interconversion between Cobalt(III) Thiolate and Cobalt(II) Disulfide Compounds
作者:Feng Jiang、Maxime A. Siegler、Xiaobo Sun、Lin Jiang、Célia Fonseca Guerra、Elisabeth Bouwman
DOI:10.1021/acs.inorgchem.8b00549
日期:2018.8.6
disulfide compound [FeII2(L1SSL1)Cl4] is different from that of cobalt(II) compound [CoII2(L1SSL1)Cl4]. In contrast to cobalt, reaction of ligand L1SSL1 with [Fe(MeCN)6](BF4)2 did not yield the expected Fe(III) thiolate compound. This work is an unprecedented example of redox interconversion between a high-spin Co(II) disulfide compound and a low-spin Co(III) thiolate compound triggered by the nature of
Synthesis and characterization of a series of transition metal compounds of thioether and disulfide ligands
作者:Feng Jiang、Maxime A. Siegler、Elisabeth Bouwman
DOI:10.1016/j.ica.2018.10.047
日期:2019.2
Abstract A series of mononuclear metal compounds [MII(L1SCH3)Cl2] (M = Co, Cu, Fe, Mn, L1SCH3 = 2-(methylthio)-N,N-bis(pyridin-2-ylmethyl)aminoethane) has been synthesized and characterized. The structures and spectroscopic properties of these compounds are compared to the related dinuclear compounds [MII2(L1SSL1)Cl4] (M = Co, Cu, Fe), which were obtained from the reactions of disulfide ligand L1SSL1
A tetranuclear fluorido-bridged iron compound: Fluoride abstraction from the tetrafluoridoborate anion
作者:Feng Jiang、Maxime A. Siegler、Elisabeth Bouwman
DOI:10.1016/j.inoche.2018.06.005
日期:2018.8
Abstract The novel iron(II) fluoride cluster [FeII4(L1SSL1)2F6(MeCN)2](BF4)2 (L1SSL1 = di‑2‑(bis(2‑pyridylmethyl)amino)ethyl disulfide) has been synthesized by reaction of the ligand L1SSL1 with [Fe(MeCN)6](BF4)2. The crystal structure shows that a tetranuclear iron(II) compound is formed through the bridging of two dinuclear iron(II) units by four fluoride anions. The 19F NMR spectrum distinguishes