Preparation and Characterization of Homologous Diiron Dithiolato, Diselenato, and Ditellurato Complexes: [FeFe]-Hydrogenase Models
作者:Mohammad K. Harb、Ulf-Peter Apfel、Joachim Kübel、Helmar Görls、Greg A. N. Felton、Taka Sakamoto、Dennis H. Evans、Richard S. Glass、Dennis L. Lichtenberger、Mohammad El-khateeb、Wolfgang Weigand
DOI:10.1021/om900675q
日期:2009.12.14
of the bridging chalcogen atoms in hydrogenase model complexes, diiron dithiolato, diselenolato, and ditellurolato complexes have been prepared and characterized. Treatment of Fe3(CO)12 with 3,3-bis(thiocyanatomethyl)oxetane (1) or a mixture of 2-oxa-6,7-dithiaspiro[3.4]octane (2a) and 2-oxa-6,7,8-trithiaspiro[3.5]nonane (2b) in toluene at reflux afforded the model compound Fe2(μ-S2C5H8O)(CO)6 (3).
为了阐明桥联硫属元素原子在氢化酶模型复合物中的影响,已制备并表征了二铁二硫代巯基,二硒烯和二铁脲基的配合物。用3,3-双(硫氰酸根合甲基)氧杂环丁烷(1)或2-氧杂-6,7-二硫杂螺[3.4]辛烷(2a)和2-氧杂-6,7的混合物处理Fe 3(CO)12, 8 trithiaspiro [3.5]壬烷(2B)的甲苯在回流下得到模型化合物的Fe 2(μ-S 2 ç 5 ħ 8 O)(CO)6(3)。类似diselenolato和ditellurolato络合物,铁2(μ-硒2 Ç5 ħ 8 O)(CO)6(4)和Fe 2(μ-TE 2 ç 5 ħ 8 O)(CO)6(5),是从Fe的反应得到3(CO)12与2-氧杂分别为-6,7-二硬脂螺[3.4]辛烷(6)和2-氧杂-6,7-二硬脂螺[3.4]辛烷(7)。化合物3 - 5通过光谱技术(NMR,IR,光电子能谱),质谱,单晶X射线分析和计算模