Synthesis and structural characterization of iron–sulfur complexes with hydrophilic nitrogen–phosphorus ligands
作者:Xing-Bin Jing、Dong Ma、Pei-Hua Zhao、Yu-Long Li
DOI:10.1007/s11243-016-0076-x
日期:2016.10
Reaction of the parent complex (μ-PDT)Fe2-(CO)6 (A) (PDT = 1,3-SCH2CH2CH2S2−) with the bidentate N/P ligand [(Ph2P)2N(C6H4Cl-p)] in the presence of Me3NO as decarbonylating agent produced an unexpected iron–sulfur complex [(μ-PDT)Fe2(CO)5PPh2(NHC6H4Cl-1,4)}] (1). Extending this chemistry further, two similar complexes [(μ-PDT)Fe2(CO)5PPh2(NHC6H4NO2-1,4)}] (2) and [(μ-PDT)Fe2(CO)5PPh2(NHC6H4CO2Et-1
母体配合物 (μ-PDT)Fe2-(CO)6 (A) (PDT = 1,3-SCH2CH2CH2S2−) 与双齿 N/P 配体 [(Ph2P)2N(C6H4Cl-p)] 在存在下的反应Me3NO 作为脱羰剂产生了意想不到的铁硫复合物 [(μ-PDT)Fe2(CO)5PPh2(NHC6H4Cl-1,4)}] (1)。进一步扩展这种化学,两个相似的复合物 [(μ-PDT)Fe2(CO)5PPh2(NHC6H4NO2-1,4)}] (2) 和 [(μ-PDT)Fe2(CO)5PPh2(NHC6H4CO2Et- 1,4)}] (3) 可以分别由前体 A 与单齿 N/P 配体 Ph2P(NHC6H4NO2-1,4) 和 Ph2P(NHC6H4CO2Et-1,4) 的简单取代反应制备。这些新配合物可被视为 [FeFe] 氢化酶的活性位点模型,已通过元素分析、FTIR 和 NMR(1H、13C、31P)光谱以及配合物