Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Synthesis purification and structural characterization of the dimethyldiselenoarsinate anion|
|Citation:||Inorganic Chemistry: including bioinorganic chemistry, 2002; 41(21):5426-5432|
|Publisher:||Amer Chemical Soc|
|Jürgen Gailer, Graham N. George, Hugh H. Harris, Ingrid J. Pickering, Roger C. Prince, Arpad Somogyi, Gavin A. Buttigieg, Richard S. Glass, and M. Bonner Denton|
|Abstract:||A novel arsenic-selenium solution species was synthesized by reacting equimolar sodium selenite and sodium dimethylarsinate with 10 mol equiv of glutathione (pH 7.5) in aqueous solution. The solution species showed a single (77)Se NMR resonance at 112.8 ppm. Size-exclusion chromatography (SEC) using an inductively coupled plasma atomic emission spectrometer (ICP-AES) as the simultaneous arsenic-, selenium-, sulfur-, and carbon-specific detector revealed an arsenic-selenium moiety with an As:Se molar ratio of 1:2. Electrospray ionization mass spectrometry (ESI-MS) of the chromatographically purified compound showed a molecular mass peak at m/z 263 in the negative ion mode. Fragmentation of the parent ion (ESI-MS-MS) produced (CH(3))(2)As(-) and Se(2)(-) fragments. Arsenic and selenium extended X-ray absorption fine structure spectroscopy (EXAFS) of the purified species revealed two As-C interactions at 1.943 A and two As-Se interactions at 2.279 A. On the basis of these results this novel solution species is identified as the dimethyldiselenoarsinate anion.|
Indicators and Reagents
Magnetic Resonance Spectroscopy
|Description:||Copyright © 2002 American Chemical Society|
|Appears in Collections:||Aurora harvest 6|
Chemistry and Physics publications
Environment Institute publications
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.