J 2003

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

HAVEL, Josef

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

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

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

Změněno: 26/6/2009 12:26, prof. RNDr. Přemysl Lubal, Ph.D.

Abstract

V originále

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