期刊
RADIOCHIMICA ACTA
卷 90, 期 9-11, 页码 549-554出版社
WALTER DE GRUYTER GMBH
DOI: 10.1524/ract.2002.90.9-11_2002.549
关键词
uranium; glycine; N-(2-mercaptopropionyl)glycine; 2(')2 '-dithiobis(N-propionylglycine)
Three new uranium(VI) compounds have been prepared with glycine (Hgly), N-(2-mercaptopropionyl)glycine (Hmpg) and 2,2'-dithiobis(N-propionylglycine) (tpg). The crystal structure of [UO2(Hgly)(2)Cl-2] has been solved, revealing the uranium atom to be seven-co-ordinated. The two zwitterionic glycines are coordinated to uranium atom by the carboxylate groups, one in a monodentate and the other in a bidentate mode. Solid state studies and low temperature H-1, C-13, 2D COSY and HMQC solution NMR spectra of the [UO2(mpg)(CH3COO)], show that mpg coordinates uranium atom by the carboxylate group.
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