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A new Zn II coordination polymer based on 4‐(pyridin‐4‐yl)benzoic and formic acids: in‐situ synthesis, crystal structure and luminescence properties
Author(s) -
Luo Fuming,
Tang Guodong,
Zhang Jinfang
Publication year - 2018
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s205322961801269x
Subject(s) - luminescence , formate , crystallography , supramolecular chemistry , thermogravimetric analysis , hydrogen bond , crystal structure , formic acid , zinc , coordination polymer , benzoic acid , chemistry , polymer , powder diffraction , materials science , molecule , organic chemistry , catalysis , optoelectronics
The title compound, poly[(μ 2 ‐formato‐κ 3 O , O ′: O )[μ 2 ‐4‐(pyridin‐4‐yl)benzoato‐κ 3 N : O , O ′]zinc(II)], [Zn(C 12 H 8 NO 2 )(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 Zn 2+ 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…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.