A Cu(II) metal–organic framework based on an angular ligand with a bulky uncoordinated group: synthesis, structure, and gas adsorption. Issue 5 (3rd March 2020)

• Record Type: Journal Article
• Authors: Shi, Hongxia; Kong, Xiang-Jing; He, Tao
• Is Part Of: Journal of coordination chemistry. Volume 73:Issue 5(2020)
• Page Start: 844
• Page End: 853
• Publication Date: 2020-03-03
• Subjects: Metal-organic framework -- angular ligand -- desymmetrization -- functionalization -- structure; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2020.1750605
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: By rational ligand desymmetrization and functionalization, a new angular ditopic carboxylate ligand with a bulky uncoordinated nitrophenyl group, 5′-(4-nitrophenyl)-[1, 1′:3′, 1″-terphenyl]-4, 4″-dicarboxylic acid (H2 NTDC), has been designed and synthesized. The smart H2 NTDC ligand was employed to construct a novel metal-organic framework (MOF) [Cu(NTDC)(H2 O)] (BUT-241, BUT = Beijing University of Technology) with the typical Cu-paddle-wheel SBU. Owing to the distinct geometry and functionality of the H2 NTDC ligand, the 2-D (two dimensional) sql nets are packed via various π − π interactions. Therefore, the resulting structure of BUT-241 differs from other MOFs built with similar ligands. Through ligand engineering, the construction of BUT-241 has enriched the family of MOFs based on the classic ditopic carboxylate ligands. In addition, the nitrophenyl-functionalization also has an effect on the overall structure and pore chemistry of BUT-241, and thus facilitates its gas adsorption capacity. Graphical Abstract: