Synthesis and Sulfur Oxygenation of a (N<sub>3</sub>S)Ni Complex Related to Nickel-Containing Superoxide Dismutase
作者:Christopher S. Mullins、Craig A. Grapperhaus、Brian C. Frye、Larry H. Wood、Amy J. Hay、Robert M. Buchanan、Mark S. Mashuta
DOI:10.1021/ic901246w
日期:2009.11.2
A nickel(II) thiolate complex incorporating three N-donor types (amino, amido, and imidazole) has been synthesized and characterized. The (N3S)Ni complex, [N-2-[(2-mercapto-2-methylpropyl)amino]ethyl}-1-methylimidazole-2-carboxamido]nickel(II) (1), is stable in the presence of O2 but readily forms the sulfinato (RSO2−) derivative 2 upon the addition of H2O2. Electrochemical investigations of 1 reveal
合成并表征了掺入三种N-给体类型(氨基,酰胺基和咪唑)的硫醇镍(II)配合物。(N 3 S)Ni络合物[ N- 2-[(2-巯基-2-甲基丙基)氨基]乙基} -1-甲基咪唑-2-羧酰胺基]镍(II)(1)在该化合物中稳定。的O存在2但容易形成的亚磺酸基(RSO 2 - )衍生物2在所述添加H 2 ö 2。对1的电化学研究表明,+ 0.17 V相对于Fc + / Fc(200 mV / s)发生不可逆的基于硫的氧化,氧化为2时转变为+0.81 V。密度泛函理论研究1发现,占据最高的分子轨道主要是基于硫的,与观察到的基于硫的氧化和O 2稳定性相符。