Paper
A series of ZnII and CoII complexes based on 2-(imidazo[1,5-a]pyridin-3-yl)phenol: syntheses, structures, and luminescent and magnetic properties
Published May 19, 2014 · Q. Gao, Yanmei Chen, Yonglu Liu
Journal of Coordination Chemistry
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Abstract
The employment of 2-(imidazo[1,5-a]pyridin-3-yl)phenol (HIPP) in ZnII and CoII coordination 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 for 1, 2, and 3 in the solid state at room temperature. Variable temperature (2.0–300 K) magnetic studies for 3, 4, and 5 indicate weak antiferromagnetic coupling between the metal centers in 3 and 5, and weak ferromagnetic CoII⋯CoII exchange interactions in 4. Graphical Abstract 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.
Two-(imidazo[1,5-a]pyridin-3-yl)phenol (HIPP) is a promising synthesis method for ZnII and CoII coordination complexes, with promising luminescent and magnetic properties.
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