IR Spectroscopic Investigation of the Structure of Polymeric Uranyl di(2-Ethylhexyl)phosphate Molecules in C6 H6 and CCl4 Solutions Full article
Journal |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
||
---|---|---|---|
Output data | Year: 1994, Volume: 35, Number: 6, Pages: 804-808 Pages count : 5 DOI: 10.1007/BF02578111 | ||
Tags | Coordination Number; Polymer Molecule; Tributyl Phosphate; Uranium Atom; Phosphoryl Oxygen | ||
Authors |
|
||
Affiliations |
|
Abstract:
Using IR spectroscopy, we studied the types of coordination of POO groups in di(2-ethylthexyl)phosphate anionx X− with UO 2 2+ cations in the C6H6 and CCl4 solutions of the polymer molecules (UO2X2)p. The polymers exhibit tridentate-bridge coordination (I), which is not typical of (MXn)p salts , where the phosphoryl oxygen atom forms two bonds with U(VI) atoms. When a few U(VI) atoms (≳7%) interact with donar additives, all POO group I change their coordination to the usual bidentate-bridge type, resulting in a structural transformation of the polymer. The bridging POO group are responsible for the difference in the dimerization and trimerization constants and the constants of the subsequent addition of the monomer molecules UO2X2 to the polymer chain (UO2X2)p. It is suggested that type I coordination of X− to U(VI) is due to an extended bond between the 2p2-electrons of the phosphoryl oxygen atom of the X− anion and a vacant f-orbital of the U(VI) atom (pπ−fπ interaction). This unusual type of bond between uranium (VI) and tributyl phosphate (TBP) phosphoryl oxygen was found earlier for the UO2Cl2·2TBP complex.
Cite:
Stoyanov E.S.
IR Spectroscopic Investigation of the Structure of Polymeric Uranyl di(2-Ethylhexyl)phosphate Molecules in C6 H6 and CCl4 Solutions
Journal of Structural Chemistry. 1994. V.35. N6. P.804-808. DOI: 10.1007/BF02578111 WOS Scopus РИНЦ
IR Spectroscopic Investigation of the Structure of Polymeric Uranyl di(2-Ethylhexyl)phosphate Molecules in C6 H6 and CCl4 Solutions
Journal of Structural Chemistry. 1994. V.35. N6. P.804-808. DOI: 10.1007/BF02578111 WOS Scopus РИНЦ
ArticleLinkType.TRANSLATED_TO_ORIGINAL:
Стоянов Е.С.
О строении полимерных молекул ди-2-этилгексилфосфата уранила в растворах в C6H6 и CCl4 по данным ИК спектроскопии
Журнал структурной химии. 1994. Т.35. №6. С.60-65. РИНЦ
О строении полимерных молекул ди-2-этилгексилфосфата уранила в растворах в C6H6 и CCl4 по данным ИК спектроскопии
Журнал структурной химии. 1994. Т.35. №6. С.60-65. РИНЦ
Dates:
Submitted: | Oct 29, 1993 |
Published print: | Nov 1, 1994 |
Identifiers:
Web of science | WOS:A1994RR06800008 |
Scopus | 2-s2.0-51649132381 |
Elibrary | 30669555 |
OpenAlex | W2069275258 |