کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1307141 | 975124 | 2009 | 5 صفحه PDF | دانلود رایگان |
Two trinuclear NiFe2 complexes Fe2(CO)6(μ3-S)2[Ni(Ph2PCH2)2NR] (R = n-Bu, 1; Ph, 2) containing an internal base were prepared as biomimetic models for the active sites of FeFe and NiFe hydrogenases. Treatment of complex Fe2(CO)6(μ3-S)2[Ni(Ph2PCH2)2N(n-Bu)] (1) with HOTf gave an N-protonated complex [Fe2(CO)6(μ3-S)2{Ni(Ph2PCH2)2NH(n-Bu)}][OTf] ([1H][OTf]). The structures of complexes 1, 2 and [1H][OTf] were determined by X-ray crystallography, which shows that the proton held by the N atom of [1H][OTf] lies in an equatorial position. Cyclic voltammograms of complexes 1 and [1H][OTf] were studied and compared with that of Fe2(CO)6(μ3-S)2[Ni(dppe)].
Trinuclear NiFe2 complexes Fe2(CO)6(μ3-S)2[Ni(Ph2PCH2)2NR] (R = n-Bu, 1; Ph, 2) containing an internal base were prepared and structurally characterized as biomimetic models for the active sites of FeFe and NiFe hydrogenases. The N atom in 1 can readily catch a proton from HOTf to form [1H][OTf], which regenerates 1 quickly and quantitatively in the presence of aniline.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 362, Issue 2, 20 January 2009, Pages 372–376