期刊
CRYSTENGCOMM
卷 14, 期 24, 页码 8620-8625出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce26418h
关键词
-
资金
- National Natural Science Foundation of China [21172210, 20872135]
A novel quinone biradical (1) was hydrothermally synthesized through ZnCl2 mediated decarboxylation and carbon-carbon coupling reactions using the 2-(imidazo[1,2-a]pyridin-2-yl)-2-oxoacetic acid radical. Interestingly, when CuCl2 was used instead of ZnCl2, a new mixed-valence copper coordination polymer (2) with semiquinone radical anion ligand was obtained. The possible formation mechanism of these two compounds is proposed. The EPR and magnetic susceptibility data suggest that 1 is a biradical. The EPR and XPS results support that 2 is a mixed-valence copper coordination polymer. The quinone biradical 1 forms a one-dimensional (1D) columnar stacking chain. The coordination polymer 2 consists of a two-dimensional (2D) layered framework constructed by 1D corrugated double-stranded stair-like inorganic [CuCl](n) chains and bridged semiquinone radical anion ligands. 1 and 2 exhibit antiferromagnetic coupling interactions and different luminescent colors.
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