A series of entangled Cd(II) coordination polymers assembled from different dicarboxylate acids and a flexible imidazole-based ligand. (29th March 2015)

• Record Type: Journal Article
• Authors: Mu, Ya-Juan; Xie, Ji-Xing; Ran, Yun-Gen; Han, Bo; Qin, Gui-Fang
• Is Part Of: Polyhedron. Volume 89(2015)
• Page Start: 20
• Page End: 28
• Publication Date: 2015-03-29
• Subjects: Entangled coordination polymers -- Dicarboxylate acids -- Flexible imidazole-based ligands -- Photoluminescent properties -- Cd(II) coordination polymers; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2014.12.029
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Four architectures with different entangled modes have been obtained by introducing dicarboxylate co-ligands into the Cd(II)-bmimx system. Their structures have been analyzed. In addition, the thermal stability and photoluminescent properties of complexes1 –4 have also been investigated. Abstract: In order to tune the architectures of Cd(II)-bmimx coordination polymers (bmimx = 1, 4-bis(2-methylimidazol-1-ylmethyl)-2, 3, 5, 6-tetramethylbenzene), four dicarboxylate ligands, succinic acid (H2 suc), 1, 4-benzenedicarboxylic acid (H2 bdc), 4, 4′-sulfonyldibenzoic acid (H2 sdba) and 4, 4′-carbonyldibenzoic acid (H2 cba), have been employed as co-ligands, and four new coordination polymers with different entangled modes, namely {[Cd(bmimx)(suc)]·2H2 O} n (1 ), [Cd(bmimx)(bdc)(H2 O)] n (2 ), [Cd(bmimx)(sdba)] n (3 ) and {[Cd(bmimx)(cba)]·8H2 O} n (4 ), have been synthesized and characterized. Complexes1 and2 show the dia topology with the 4- and 5-fold interpenetrating modes, respectively. Complexes3 and4 exhibit different 2D + 2D → 3D polycatenated networks via Hopf links, respectively. A comparison of these structures reveals that the backbones of the dicarboxylate ligands play important roles in controlling the entangled modes of the coordination polymers. Furthermore, the thermal stabilities and the photoluminescence of1 –4 have also been investigated.