Authors
Citation
Es. Stoyanov et al., COMPOSITION AND STRUCTURE OF ZIRCONIUM COMPLEXES IN TRIBUTYL-PHOSPHATE EXTRACTS OF ZR FROM CONCENTRATED NITRIC-ACID SOLUTIONS, Journal of structural chemistry, 34(5), 1993, pp. 722-730
Citations number
25
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
ISSN journal
00224766
Volume
34
Issue
5
Year of publication
1993
Pages
722 - 730
Database
ISI
SICI code
0022-4766(1993)34:5<722:CASOZC>2.0.ZU;2-I
Abstract
Using quantitative difference IR spectroscopy we have found that the t
ributyl phosphate extracts of zirconium from 12-15 M HNO3 contain ioni
c associates [(TBP)2H+]Zr(NO3)5- (I) and [TBP.H3O+(H2O)n]Zr(NO3)5- (II
), where n = 1, 2, as well as the Zr(NO3)4(TBP)2 complex at a lower co
ncentration than (I) and (II). The equilibrium I reversible II is shif
ted toward II at higher C(HNO3)o and lower C(Zr)o. The structure of as
sociates I and II is discussed