Open AccessDi- and tetranuclear gadolinium (III) complexes of 2-hydroxypropane-1,2,3-tricarboxylic acid and 1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid : identification and characterization
Author(s) -
Mohammed Riri,
Farid Hadhoudi,
Mustapha Hor,
Samir Ezzemouri,
Tarik Eljaddi,
Adelkhalek Benajjar,
Miloudi Hlaı̈bi
Publication year - 2017
Publication title -
international journal of advanced chemistry
Language(s) - English
Resource type - Journals
ISSN - 2310-2977
DOI - 10.14419/ijac.v5i2.8471
Subject(s) - citric acid , dicarboxylic acid , chemistry , gadolinium , tricarboxylic acid , aqueous solution , nuclear chemistry , oxygen , inorganic chemistry , citric acid cycle , organic chemistry , biochemistry , metabolism
Our studying involved, Identification and characterization of two novel gadolinium complexes with 2-hydroxypropane-1,2,3-tricarboxylic acid (citric acid) noted H3L and 1,2,2-trimethylcyclopentane-1, 3-dicarboxylic acid (camphoric acid) noted H2L in aqueous solution and in pH range 5,5–7,5. These acids containing the donor atoms (oxygen of OH and COOH), the formatted complexes are colorless and have no absorption band UV–visible. So, to determine the composition and stabilities of these complexes in solution, we have used an analytical technique called «Indirect Photometry Detection (IPD) » have identified multi-nuclear and multi-dentate complexes studied in this work. Giving for these colorless complexes with a mole ratio (M:L): (4:2) for Gd (III)–Citric acid and (2:2) Gd (III)–Camphoric acid. In addition, we have shown that the compositions and stabilities constant of these complexes are depended on the acidity of the medium.