Synthetic [FeFe]-H2ase models bearing phosphino thioether chelating ligands |
| |
| Authors: | Yingjie Zhao Xin Yu Huilan Hu Xinlong Hu Sakthi Raje Raja Angamuthu Chen-Ho Tung Wenguang Wang |
| |
| Affiliation: | a School of Chemistry and Chemical Engineering, Shandong University, Ji'nan 250100, China;b Laboratory of Inorganic Synthesis and Bioinspired Catalysis(LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India |
| |
| Abstract: | A series of {2Fe3S} complexes bearing phosphino thioether chelating ligand were synthesized on the basis of Fe2(Me2pdt)(1,2-Cy2PC6H4SMe)(CO)4 (Me2pdt=Me2C(CH2S-)2, 1). The disubstituted Fe(I)Fe(I) compound 1 exhibits a reversible one-electron redox even for[Fe(I)Fe(Ⅱ)]+/0 couple. Based on the oxidation of 1 to[1]+, the tri-substituted[Fe(I)Fe(Ⅱ)]+ cationic complex[Fe2(Me2pdt)(1,2-Cy2PC6H4SMe) (PPh3)(CO)3]+ ([2]+) was synthesized. Reduction of[2]+ provided the neutral tri-substituted Fe(I)Fe(I) compound 2. The substitution of the CO in 1 ligand by PPh3 results in an anodic shift of the FeⅡFeI/FeIFeI couple of 470 mV. Most importantly, this substitution also leads to the Fe-Fe bonds in 1 and 2 with large Lewis basicity difference, i.e. △pKaMeCN~10. |
| |
| Keywords: | Mixed-valence Fe(I)Fe(II) Phosphino thioether ligand Diiron bridging hydride Lewis-acid basicity |
| 本文献已被 ScienceDirect 等数据库收录！ |
| 点击此处可从《中国化学快报》浏览原始摘要信息 |
|
点击此处可从《中国化学快报》下载全文 |
|
