Two new potential optical materials: Co(II) and Ni(II) 3-fluorobenzoate complexes with pyridine-3-carboxamide. Issue 5 (3rd April 2019)

• Record Type: Journal Article
• Authors: Özbek, Füreya Elif; Sertçelik, Mustafa; Yüksek, Mustafa; Küçüköz, Betül; Elmali, Ayhan; Şahin, Ertan
• Is Part Of: Journal of coordination chemistry. Volume 72:Issue 5/6/7(2019)
• Page Start: 786
• Page End: 795
• Publication Date: 2019-04-03
• Subjects: 3-Fluorobenzoic acid -- hydrothermal synthesis -- linear absorption -- fluorescence -- XRD; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2019.1590560
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: Two new complexes, [Co(3-fba)2 (na)2 (H2 O)2 ] (1 ) and [Ni(3-fba)2 (na)2 (H2 O)2 ] (2 ) (where 3-fba = 3-fluorobenzoate and na = pyridine-3-carboxamide, nicotinamide), were synthesized and characterized using different techniques (elemental analysis, FT-IR, UV-Vis spectrophotometer, single-crystal X-ray diffraction, fluorescence spectroscopy, and TGA/DTA analysis). X-ray structural analysis revealed that1 and2 are isostructural and exhibit distorted octahedral coordination geometry. In each molecule, metal atoms (Co +2 and Ni +2 ) are linked by two 3-fluorobenzoate anions, two pyridine-3-carboxamide ligands, and two water molecules per formula unit. The 3-fluorobenzoate and pyridine-3-carboxamide are monodentate through a carboxylate oxygen atom and the nitrogen atom of the pyridine ring, respectively. UV-Vis results showed that the studied complexes have absorption edges similar to semiconductor structures. Namely, 1 and2 indicated emission behaviors around 370 nm and 361 nm, respectively. Abstract :