Two Transition Metal Complexes Based on Terdentate Polypyridine-benzoic Acid
Author(s): Zhou Yingxia, Wang Ruiying, Huang Shuiping, Chu Caiqin, Wu Benlai
Pages: 2091-2095
Year: 2015 Issue: 12
Journal: Henan Sciences
Keyword: terpyridine-benzoic acid; complex; crystal structure; UV spectrum; fluorescence;
Abstract: 2-Acetyl pyridine and p-Methylbenzaldehyde as raw materials,the ligand 2,2′:6′,2″-terpyridine-4′-benzoic acid(HL)was synthesized containing N/O coordination atoms. Direct reactions between the intermediate product 4′-(4-bromo-phenyl)-[2,2′:6′,2″]terpyridine(L′)and corresponding metal salts yield two new mononuclear complexes[Co(L)2]·5H2O(1)and[Ru(L)2]·5H2O(2)by means of hydrothermal method. Complex 1 belongs to the triclinic system with a P-1 space group,and complex 2 belongs to the tetragonal system with a I41/a space group. In complexes 1 and 2,every ligand L acts as a terminal ligand with three nitrogen atoms of terpyridyl chelating with metal ions,and every metal ion adopts a distorted octahedral coordination symmetry ligated by two L through mer coordination fashion. Otherwise,infrared spectra and UV spectra of 1 and 2,elemental analysis, infrared spectra and NMR of ligand L were investigated.
Pages: 2091-2095
Year: 2015 Issue: 12
Journal: Henan Sciences
Keyword: terpyridine-benzoic acid; complex; crystal structure; UV spectrum; fluorescence;
Abstract: 2-Acetyl pyridine and p-Methylbenzaldehyde as raw materials,the ligand 2,2′:6′,2″-terpyridine-4′-benzoic acid(HL)was synthesized containing N/O coordination atoms. Direct reactions between the intermediate product 4′-(4-bromo-phenyl)-[2,2′:6′,2″]terpyridine(L′)and corresponding metal salts yield two new mononuclear complexes[Co(L)2]·5H2O(1)and[Ru(L)2]·5H2O(2)by means of hydrothermal method. Complex 1 belongs to the triclinic system with a P-1 space group,and complex 2 belongs to the tetragonal system with a I41/a space group. In complexes 1 and 2,every ligand L acts as a terminal ligand with three nitrogen atoms of terpyridyl chelating with metal ions,and every metal ion adopts a distorted octahedral coordination symmetry ligated by two L through mer coordination fashion. Otherwise,infrared spectra and UV spectra of 1 and 2,elemental analysis, infrared spectra and NMR of ligand L were investigated.
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