Published 2002 | Version v1
Book Metadata-only

Spectrophotometric investigation of Lanthanum, Cerium, Erbium, Europium and Praseodymium complexes with four crown ethers in DMSO solution using murexide as a metallochromic indicator

Creators

  • 1. Arak Univ.(Iran, Islamic Republic of). Dept. of Chemistry

Description

Complexation of La/sup 3+/, Ce/sup 3+/, Pr/sup 3+/ and Er/sup 3+/ with 18-crown-6 (18C6), dicyclohexyl-18-crown-6 (DCH18C6), dibenzo-18-crown-6(DB18C6) and dibenzopyridino-18-crown-6 (DBP18C6) has been studied in dimethyl-ulfoxide (DMSO) by means of a competitive spectrophotometric technique using purpurate anion (murexide) as metal ion indicator. The method is based on the competition between the murexide and the crowns for metal ion. Formation constants of 1:1 complexes were obtained from the absorbance-mole ratio data and found to vary in the order La/sup 3+/ > Ce/sup 3+/ > Pr/sup 3+/ > Eu/sup 3+/ > Er/sup 3+/. It was found that the structure influence the formation and stability of the resulting complexes. Effects of various parameters on complexation are discussed. (author)

Part of:
CSP Conference 2001 (abstracts)

Additional details

Publishing Information

Publisher
Sindh University Press, Hyderabad
Imprint Place
Hyderabad (Pakistan)
Imprint Title
CSP Conference 2001 (abstracts)
Imprint Pagination
247 p.
Journal Page Range
p. 89

Conference

Title
CSP Conference 2001 (abstracts)
Dates
4-6 Feb 2002
Place
Jamshoro (Pakistan)

INIS

Country of Publication
Pakistan
Country of Input or Organization
Pakistan
INIS RN
33046227
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AQUEOUS SOLUTIONS; CERIUM COMPLEXES; DMSO; ERBIUM COMPLEXES; EUROPIUM COMPLEXES; LANTHANUM COMPLEXES; PRASEODYMIUM COMPLEXES; SPECTROPHOTOMETRY
Descriptors DEC
COMPLEXES; DISPERSIONS; HOMOGENEOUS MIXTURES; MIXTURES; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RARE EARTH COMPLEXES; SOLUTIONS; SULFOXIDES

Optional Information