Synthesis and Characterization of Ni
<sup>III</sup>
N3S2 Complexes as Active Site Models for the Oxidized Form of Nickel Superoxide Dismutase
作者:Chien‐Wei Chiang、Yun‐Li Chu、Hong‐Ling Chen、Ting‐Shen Kuo、Way‐Zen Lee
DOI:10.1002/chem.201304543
日期:2014.5.19
Nickel complexes, [Ni(H2BARTPP)](ClO4)2 (R=Ph for 1 or iPr for 2), supported by a pentadentate ligand H2BARTPP were synthesized and oxidized to form NiIII species having a N3S2 coordination environment to mimic the active site of the oxidized form of nickel superoxide dismutase (NiSODox). The NiIII species 2+ exhibited a rhombic signal with g values at 2.15, 2.12 and 2.02 similar to that of NiSODox
合成由五齿配体H 2 BA R TPP负载的镍配合物[Ni(H 2 BA R TPP)](ClO 4)2(R = Ph表示1或i Pr表示2),并氧化形成Ni III物种具有N3S2配位环境以模仿氧化态的镍超氧化物歧化酶(NiSODox)的活性位点。Ni III物种2 +表现出与 NiSODox相似的g值分别为2.15、2.12和2.02的菱形信号。DFT计算显示2 +具有不成对的电子,主要位于Ni III中心的d轨道,该电子与H 2 BA Pr TPP的轴向吡啶氮的p z轨道强烈重叠。