1. Construction of five Zn(ii)/Cd(ii) coordination polymers derived from a new linear carboxylate/pyridyl ligand: design, synthesis, and photocatalytic properties.
- Author
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Liu, Lei-Lei, Yu, Cai-Xia, Du, Ji-Min, Liu, Shi-Min, Cao, Jing-Shuai, and Ma, Lu-Fang
- Subjects
CADMIUM compounds ,PHENYL compounds ,LIGANDS (Chemistry) ,BENZOIC acid ,CARBOXYLIC acids - Abstract
Solvothermal reactions of Cd(OAc)
2 /Zn(OAc)2 with a new ligand, (pyridin-3-yl)methyl 4-(2-(4-((pyridin-3-yl)methoxy)phenyl)diazenyl)benzoate (L1), under different templates via an in situ ligand transformation reaction produced five coordination polymers, [CdL2 (H2 O)]n (1), [Cd1.5 L3 ]n (2), [Cd2 L4 ]n (3), [(ZnL2 )·H2 O]n (4) and {[Zn(1,3-BDC)(L1)]·MeCN·0.5H2 O}n (5), where HL = 4-(2-(4-((pyridin-3-yl)methoxy)phenyl)diazenyl)benzoic acid, 1,3-H2 BDC = 1,3-benzenedicarboxylic acid. Compound 1 is a three-dimensional (3D) wave-like structure constructed from 4-connected Cd(ii) nodes and L− linkers. Compounds 2 and 3 bear similar 2D networks built from metallocyclic [Cd4 L4 ] units. Compound 4 features a wrinkled 2D layer based on metallocyclic [Zn4 L4 ] units. Compound 5 has a novel 1D single-wall metal–organic nanotube (SWMONT) in which the 1,3-BDC ligands act as linkers to connect the [Zn2 (L1)2 ] rings. The results reveal that the different templates have a significant effect on the final structures. Compounds 1–5 exhibited relatively high photocatalytic activity towards the degradation of methylene blue (MB) in aqueous solution under UV-Vis irradiation. The kinetics of the catalytic photodegradation reactions and the stabilities of photocatalysts were also investigated. [ABSTRACT FROM AUTHOR]- Published
- 2016
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