Synthesis, characterization and thermal properties of two novel lanthanide 2, 2'-biquinoline-4, 4'-dicarboxylate complexes

S. Zati-Hanani, and Rohana Adnan, and Ahmad Faiz Abdul Latip, and Coswald Stephen Sipaut @ Mohd Nasri, (2011) Synthesis, characterization and thermal properties of two novel lanthanide 2, 2'-biquinoline-4, 4'-dicarboxylate complexes. Sains Malaysiana, 40 (9). pp. 999-1006. ISSN 0126-6039

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Abstract

Two new lanthanide coordination complexes with 2,2'-biquinoline-4,4'- dicarboxylic acid (H2bqda) and 1,10-phenanthroline (phen), [La 2(Hbqda) 2 (bqda) 2 (phen)] n [1] and [Gd(bqda) 1.5 (phen)] n [2] were successfully synthesized and characterized. The complexes were obtained through hydrothermal method at 170oC for 3 days. The metal to acid to 1,10-phenanthroline ratio, 1:1:2 had been chosen to synthesize 1 and 2. The percentage yield for 1 and 2 was 68% and 75%, respectively calculated based on the starting lanthanide salt used. The yellow coloured complexes were found to be stable at room temperature and insoluble in organic solvents. The complexes obtained were characterized by elemental analysis (CHN), infrared spectroscopy (FTIR) and thermogravimetric (TGA) analysis. The FTIR spectra of these complexes confirm the complexation had taken place by the existence of COO- symmetric and asymmetric stretching peaks at 1385 and 1542-1532 cm-1, respectively

Item Type: Article
Uncontrolled Keywords: Lanthanide , 2,2'- biquinoline-4,4-dicarboxylic acid , 1,10-phenanthroline , hydrothermal method
Subjects: Q Science > QD Chemistry
Divisions: FACULTY > Faculty of Engineering
Depositing User: Noraini
Date Deposited: 13 Jun 2018 00:24
Last Modified: 13 Jun 2018 00:24
URI: http://eprints.ums.edu.my/id/eprint/20276

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