Influence of CH<sub>3sub> group of μ-N–C–S ligand on the properties of [Fe<sub>2sub>(C<sub>4sub>H<sub>5sub>N<sub>2sub>S)<sub>2sub>(NO)<sub>4sub>] complex
- 作者：N.A. Sanina ; T.N. Rudneva ; S.M. Aldoshin ; G.V. Shilov ; D.V. Kortchagin ; Yu.M. Shul’ ; ga ; V.M. Martynenko and N.S. Ovanesyan
- 关键词：NO donors ; Sulfur– ; nitrosyl iron complexes ; 1-Methyl-imidazole-2-yl ; X-ray analysis ; Mossbauer spectroscopy ; Kinetics of NO release
- 刊名：Inorganica Chimica Acta
- 出版年：2006
- 期刊代码：40_00201693
- 类别：ch
- 出版时间：20 January 2006
- 卷：359
- 期：2
- 页码：570-576
- 文件大小：308 K
摘要
Bi-nuclear neutral sulfur–nitrosyl iron complex [Fe<sub>2sub>(SR)<sub>2sub>(NO)<sub>4sub>] (<strong>Istrong>) has been obtained by replacement of thiosulfate ligands in dianion [Fe<sub>2sub>(S<sub>2sub>O<sub>3sub>)<sub>2sub>(NO)<sub>4sub>]<sup>2−sup> by 1-methyl-imidazole-2-yl. From X-ray analysis data, the complex has centrosymmetrical dimeric structure, with the iron atoms being linked via μ-N–C–S bridge. From Mossbauer spectroscopy, isomeric shift δ<sub>Fesub> is 0.180(1) mm/s and quadrupole splitting ΔE<sub>Qsub> is 0.928(2) mm/s at T = 290 K. By comparative studying the mass-spectra in the gaseous phase of solid samples decomposition and kinetics of NO release in 1%aqueous solutions of dimethylsulfoxide, using of the ligand with CH<sub>3sub> substituent in position 1 of imidazole-2-thiol was shown to yield a more stable donor of nitrogen monoxide than earlier obtained analog with imidazole-2-thiol, [Fe<sub>2sub>(C<sub>3sub>H<sub>3sub>N<sub>2sub>S)<sub>2sub>(NO)<sub>4sub>].