Abstract
Three metal-organic coordination polymers based on 4-(1H-l,3-benzimidazol-2-yl)pyridine 1-oxide (BImPyO) with the molecular structures [Cu2(C12H8N3O)2]n (1), [Cu(C12H8N3O)]n (2), and [Zn(C12H8N3O)Cl]n (3) were synthesized under hydrothermal conditions. They showed diverse coordination modes and were further characterized by elemental analysis, infrared spectroscopy, and single crystal X-ray structure analysis, respectively. In 1 and 2, BImPyO generated a 1-D chain by adopting μ2-kN : kN′ coordination to bridge two Cu(II) ions with bis-N-chelation. In 3, by adopting μ3-kN : kN′:kO coordination, BImPyO bridged three crystallographically independent Zn(II) ions to form a 3-D framework; 3 exhibits strong fluorescent emission in the solid state at room temperature.
Graphical abstract
![](/cms/asset/de3b86df-55ad-404a-a079-cc0c9e3081ed/gcoo_a_1065488_uf0001_oc.jpg)
Disclosure statement
No potential conflict of interest was reported by the authors.