A series of Zn and Co complexes based on 2-(imidazo[1,5-a]pyridin-3-yl)phenol: syntheses, structures, and luminescent and magnetic properties.

Autor: Gao, Qian, Chen, Yanmei, Liu, Yonglu, Li, Cong, Gao, Dandan, Wu, Bing, Li, Haiyan, Li, Yahong, Liu, Wei, Li, Wu
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Zdroj: Journal of Coordination Chemistry; May2014, Vol. 67 Issue 10, p1673-1692, 20p
Abstrakt: The employment of 2-(imidazo[1,5-a]pyridin-3-yl)phenol (HIPP) in ZnIIand CoIIcoordination chemistry is reported. A series of complexes of compositions, [Zn(HIPP)2Cl2] (1), [Zn2(IPP)4] (2), [Co2(HIPP)4(SO4)2] (3), [Co3(IPP)6] (4), and [Co2(IPP)2(CH3COO)2]n(5), have been synthesized via choosing appropriate metal salts and different solvents. Complexes of various nuclearities are obtained from mono-, di-, trinuclear complexes to 1-D chain polymer. UV–vis absorption properties have been investigated and rationalized by density functional theory and time-dependent DFT calculations. In addition, luminescence studies suggested strong emissions for1,2, and3in the solid state at room temperature. Variable temperature (2.0–300 K) magnetic studies for3,4, and5indicate weak antiferromagnetic coupling between the metal centers in3and5, and weak ferromagnetic CoII⋯CoIIexchange interactions in4. Five coordination complexes based on 2-(imidazo[1,5-a]pyridin-3-yl)phenol were synthesized and characterized; their luminescent and magnetic properties were studied. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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