A One-Dimensional Coordination Polymer Based on Novel Radical Anion Ligand Generated In Situ: Notable Magnetic and Luminescence Properties

2008-05-07T00:00:00Z (GMT) by Guo-Ping Yong Shu Qiao Zhi-Yong Wang
A one-dimensional Zn(II) radical anion coordination polymer, [ZnCl(obip<sup>•</sup>)]<i><sub>n</sub></i> (Hobip = 2,3′-biimidazo[1,2-<i>a</i>]pyridin-2′(3′<i>H</i>)-one) (<b>1</b>) was synthesized by a hydrothermal reaction between Zn(ClO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O and hydrochloride salt of imidazo[1,2-<i>a</i>]pyridin-2(3<i>H</i>)-one, in which the radical anion ligand ([obip]<sup>•−</sup>) was generated in situ by aldol condensation and then deprotonation. The compound <b>1</b> presents strong antiferromagnetic coupling between paramagnetic radical species and notable greenish yellow-red fluorescence emission.