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Hydrothermal syntheses, crystal structures, and photocatalytic properties of two Co(II) complexes with the flexible citraconic acid
Author(s) -
Yin Weidong,
Li Guilian,
Liu Qianlong,
Ju Fengyang,
Li Yunping,
Liu Guangzhen
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900257
Subject(s) - chemistry , piperazine , infrared spectroscopy , photocatalysis , hydrothermal circulation , benzene , crystal structure , carboxylate , crystallography , methylene , single crystal , coordination polymer , medicinal chemistry , stereochemistry , organic chemistry , catalysis , chemical engineering , engineering
Two Co(II) coordination polymers, [Co(ca)(bib)] n ( I ) and {[Co(ca)(bibp) 1.5 ]·1.5H 2 O} n ( II ) (H 2 ca = citraconic acid, bib = 1,4‐bis(1‐imidazoly)benzene, bibp = 1,4‐bis‐[4‐(imidazol‐1‐yl)benzyl]piperazine), were prepared by hydrothermal method and measured structurally by single‐crystal X‐ray diffraction, infrared spectroscopy, and elemental analysis. Complex I shows a 2D layer structure containing Co‐carboxylate chains. Complex II displays a 3D metal–organic framework composed of the binuclear [Co 2 (CO 2 ) 2 ] 2+ cluster nodes through ca 2− and bibp as linkers with (4 12 ·6 3 ) topology. Complexes I and II have high thermal stabilities because their frameworks maintain good integrity before 340°C and 265°C, respectively. Both complexes show well photocatalytic activities for methylene blue degradation under UV irradiation in the presence of H 2 O 2 , which may be used as potential materials for photocatalytic dyes degradation.
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