کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1325315 | 977377 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Reduction of [Cp2∗Mo2O5] by mercaptopropionic acid in an aqueous medium. Isolation and characterization of a dinuclear oxo- and 3-sulfido-proprionato(2-)-bridged molybdenum(IV) compound Reduction of [Cp2∗Mo2O5] by mercaptopropionic acid in an aqueous medium. Isolation and characterization of a dinuclear oxo- and 3-sulfido-proprionato(2-)-bridged molybdenum(IV) compound](/preview/png/1325315.png)
Reaction of Cp2∗Mo2O5 with HSCH2CH2COOH in acidic (by CF3COOH) 50:50 MeOH–H2O solvent at room temperature yields compound Cp2∗Mo2(μ-O)(μ-SCH2CH2CO2)2, a dinuclear diamagnetic MoIV compound with a two-leg-sharing bis(four-legged piano stool) structure and a Mo–Mo distance of 2.6833(6) Å. A reaction monitoring by ESI MS shows the formation of an intermediate 18 mass units heavier, interpreted as a dihydroxo analogue. Electrochemistry shows a reversible, pH independent oxidation process and an irreversible, pH-dependent reduction process. Contrary to a recently published analogous reaction with the closely related HSCH2COOH substrate, this process does not lead to C–S bond cleavage.
Compound HSCH2CH2COOH reduces and coordinates molybdenum upon interaction with Cp2∗Mo2O5, to yield Cp2∗Mo2(μ-O)(μ-SCH2CH2CO2)2 but, unlike the closely related HSCH2COOH substrate, does not lead to C–S bond cleavage.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 12, 15 May 2007, Pages 2599–2605