Scandium nitrate-nitric acid-water-tributyl phosphate system. II. Interaction of Sc(NO{sub 3}){sub 3}{center_dot}3TBP with nitric acid in organic solvent

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Radiochemistry

OSTI ID:136343

Nikitina, G P; Papkov, K B; Listopadov, A A ^[1]

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1. Khlopin Radium Institute, St. Petersburg (Russian Federation)

Scandium nitrate solvates Sc(NO{sub 3}){sub 3}{center_dot}qTBP (TBP is tributyl phosphate, q = 3.15, 2.57, and 1.58) were synthesized, and their IR spectra were measured. Model solutions of Sc(NO{sub 3}){sub 3}{center_dot}3TBP in CCl{sub 4} containing nitric acid with Sc:HNO{sub 3} molar ratios 1:1 to 1:3 and 1:7 were prepared, and their IR spectra were also measured. The spectra indicate formation of complexes with formula Sc(NO{sub 3}){sub 3}{center_dot}mHNO{sub 3}{center_dot}3TBP (m = 1-7) through H-bonding of medium strength. In complexes with m = 1-2, nitric acid molecules are presumably bonded to oxygen atoms of nitrate groups coordinated to scandium. The R{sub O{hor_ellipsis}O} distance in these complexes was estimated for the H-bond as 2.68 {angstrom}.

• OSTI ID: 136343
• Journal Information: Radiochemistry, Journal Name: Radiochemistry Journal Issue: 2 Vol. 37; ISSN RDIOEO; ISSN 1066-3622
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ABSORPTION SPECTROSCOPY
EXTRACTION
SCANDIUM COMPLEXES
SCANDIUM NITRATES
TBP