Spectrophotometric study of uranium(VI) complex equilibria with N,N-dimethylformamide

HAVEL, Josef. Spectrophotometric study of uranium(VI) complex equilibria with N,N-dimethylformamide. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. DORDRECHT, NETHERLANDS: KLUWER ACADEMIC PUBL, 2003, vol. 257, No 2, p. 391-398. ISSN 0236-5731.

Basic information

• Original name: Spectrophotometric study of uranium(VI) complex equilibria with N,N-dimethylformamide
• Authors: HAVEL, Josef (203 Czech Republic, guarantor).
• Edition: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, DORDRECHT, NETHERLANDS, KLUWER ACADEMIC PUBL, 2003, 0236-5731.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10406 Analytical chemistry
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 0.472
• RIV identification code: RIV/00216224:14310/03:00009328
• Organization unit: Faculty of Science
• UT WoS: 000184173700023
• Keywords in English: PROTON MAGNETIC-RESONANCE; WATER-ACETONE MIXTURES; X-RAY-DIFFRACTION; THERMODYNAMIC FUNCTIONS; FORMATION CONSTANTS; MIXED-SOLVENTS; SINGLE IONS; METAL IONS; URANYL; PERCHLORATE
• Tags: FORMATION CONSTANTS, metal ions, MIXED-SOLVENTS, PERCHLORATE, PROTON MAGNETIC-RESONANCE, SINGLE IONS, THERMODYNAMIC FUNCTIONS, Uranyl, WATER-ACETONE MIXTURES, X-RAY-DIFFRACTION

Abstract

Spectrophotometric study of solvation equilibria of uranium(VI) with N,N-dimethyl formamide (DMF) in solutions with ionic strength I = 3.0 mol.dm(-3) (Na, H)ClO4 shows that DMF forms with UO22+ several relatively stable solvates absorbing in VIS range (350-490 nm). The absorbance of UO22+ bands increases and their absorption maxima shift to longer wavelengths while uranyl solvates are formed stepwise with increasing concentration of DMF. Areas of prevailing existence of individual solvates with stoichiometry 1 : n (n = 1, 2, 4, 6) have been found and their stability constants and molar absorption coefficients estimated using both graphical methods and computer minimization programs.

Links

• MSM 143100011, plan (intention): Name: Struktura a vazebné poměry, vlastnosti a analýza syntetických a přírodních molekulových ansamblů

Investor: Ministry of Education, Youth and Sports of the CR, Structure and character of bonding, properties and analysis of synthetic and natural molecular ensembles