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7849836 
Journal Article 
Synthesis and Characterization of Metal-Organic Framework Based on 2,6-Bis(4-carboxybenzylidene)cyclohexanone 
Pan Wei; Ma Chi-Xiao; Zhou Chuan-Jiang; Zhang Lu; Zhang Jun-Yong; Shi Yan-Bo; Xu Hao; Zhu Dun-Ru; Xie Jing-Li 
2021 
Yes 
Chinese Journal of Inorganic Chemistry / Wu Ji Hua Xue Xue Bao
ISSN: 1001-4861 
37 
5 
953-960 
WOS:000649559600022 
By virtue of 2,6-bis(4-carboxybenzylidene)cyclohexanone (H2L) as the ligand, metal-organic framework [MnL](n) has been successfully fabricated. This compound has been characterized by FT-IR, powder X-ray diffraction, cyclic voltammogram, solid UV, X-ray photoelectron spectroscopy and single-crystal X-ray diffraction. It crystalizes in triclinic system with space group P (1) over bar, and the asymmetric unit is composed of one Mn(II) ion and one ligand. The carboxyl groups at both ends of the ligand are monodentate coordination, and the oxygen on the carbonyl group in the middle of the ligand coordinate with the central ion as well. Each ligand is coordinated with three Mn(II) ions and consequently, achieving a relatively stable triangular coordination configuration. The Mn(II) ion forms a six coordinated configuration with oxygen atoms from six different ligands, i.e., those four O atoms in the equatorial plane derived from four different ligands' carboxyl groups, the other two O atoms on the two vertices from the different ligands' carbonyl groups, respectively. As a consequence, the octahedral configuration [MnO6] unit is formed. Based on the topological analysis, its two-dimensional (2D) kgd structural character could be observed. The cyclic voltammogram showed that the half-wave potential, E-1/2=(E-cp+E-ap)/2, was 171 mV when the sweep speed was 30 mV.s(-1). The solid UV absorption spectra showed the band gap was similar to 1.76 eV. Photocatalytic activity has been observed in the process of degrading of dye molecules such as methylene blue and methyl orange.CCDC: 2045728. 
2,6-bis(4-carboxybenzylidene)cyclohexanone; manganese compound; crystal structure; topology structure