A new Zn-II coordination polymer based on 4-(pyridin-4-yl)benzoic and formic acids: in-situ synthesis, crystal structure and luminescence properties

作者：Luo, Fuming; Tang, Guodong; Zhang, Jinfang^*

来源：Acta Crystallographica Section C-Structural Chemistry, 2018, 74(10): 1133-+.

DOI：10.1107/S205322961801269X

• two-dimensional coordination polymer
• zinc(II)
• crystal structure
• PXRD
• luminescence
• in-situ synthesis
• Z ' > 1

The title compound, poly[(mu(2)-formato-kappa O-3,O':O)[mu(2)-4-(pyridin-4-yl)benzoato-kappa N-3:O,O']zinc(II)], [Zn(C12H8NO2)(HCOO)](n), has been synthesized in situ and characterized by thermogravimetric analysis (TGA) and single-crystal and powder X-ray diffraction analyses. The polymer contains two independent structural units in the asymmetric unit. These are constructed from Zn2+ ions, 4-(pyridin-4-yl)benzoate (4-pbc) bridges and in-situ-generated formate ligands, forming two similar two-dimensional (2D) layer structures. These similar 2D layers are arranged alternately and are linked with each other by dense C- H center dot center dot center dot O hydrogen bonds to generate a three-dimensional (3D) supramolecular framework. The crystal is pseudomerohedrally twinned about [201]. Compared with free 4-Hpbc, the polymer exhibits a red shift and significantly enhanced solid-state luminescence properties.

• 出版日期2018-10
• 单位淮阴师范学院; 江南大学