Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States.
Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States.
Inorg Chem. 2022 Sep 26;61(38):14909-14917. doi: 10.1021/acs.inorgchem.2c02383. Epub 2022 Sep 15.
Addition of NO to a nonheme dithiolate-ligated iron(II) complex, Fe(MeTACN)(SSiMe) (), results in the generation of NO. Low-temperature spectroscopic studies reveal a metastable six-coordinate {FeNO} intermediate ( = 3/2) that was trapped at -135 °C and was characterized by low-temperature UV-vis, resonance Raman, EPR, Mössbauer, XAS, and DFT studies. Thermal decay of the {FeNO} species leads to the evolution of NO, providing a rare example of a mononuclear thiolate-ligated {FeNO} that mediates NO reduction to NO without the requirement of any exogenous electron or proton sources.
向非血红素二硫醇配体铁(II)配合物 Fe(MeTACN)(SSiMe) () 中添加 NO 会生成 NO。低温光谱研究揭示了一种亚稳态六配位的 {FeNO} 中间体（ = 3/2），该中间体在 -135°C 下被捕获，并通过低温 UV-vis、共振拉曼、EPR、穆斯堡尔、XAS 和 DFT 研究进行了表征。{FeNO} 物种的热分解导致 NO 的释放，这为单核硫醇配体 {FeNO} 介导 NO 还原为 NO 而无需任何外源电子或质子源提供了一个罕见的例子。
