Citation:
WANG Gui-Xia, WU Hai-Xia, LI Zhao-Hao, ZHAO Bang-Tun. Controlled Self-assembly of Two Coordination Polymers via subtly Varying Bis(2-methyl imidazole) Ligands: from 3-Connected (6,3) Net to 4-Connected sql Net[J]. Chinese Journal of Structural Chemistry,
2014, 33(7): 1074-1080.
Controlled Self-assembly of Two Coordination Polymers via subtly Varying Bis(2-methyl imidazole) Ligands: from 3-Connected (6,3) Net to 4-Connected sql Net
摘要:
Two coordination polymers constructed from 3,4-thiophenedicarboxylic acid and bis(2-methyl imidazole) ligands, namely, {[Cd2(tdc)2(bip)2]·7H2O}n (1) and [Cd(tdc)(bib)]n (2) (H2tdc=3,4-thiophenedicarboxylic acid, bip=1,3-bis-(imidazol-2-methyl)propane and bib=1,4-bis(imidazol-2-methyl)butane), have been synthesized and structurally characterized by single-crystal X-ray diffraction. Structural analyses reveal that 1 exhibits a two-dimensional (2D) layered network with 3-connected (6,3) topology, which is further connected into a threedimensional (3D) supramolecular structure by intermolecular hydrogen bonds. However, 2 features a 2D network which can be rationalized as a 4-connected sql net. The results indicate the subtle difference of auxiliary bis(imidazol-2-methyl) ligands may lead to diverse architectures. Moreover, they exhibit luminescence emission in the solid state at room temperature.
English
Controlled Self-assembly of Two Coordination Polymers via subtly Varying Bis(2-methyl imidazole) Ligands: from 3-Connected (6,3) Net to 4-Connected sql Net
Abstract:
Two coordination polymers constructed from 3,4-thiophenedicarboxylic acid and bis(2-methyl imidazole) ligands, namely, {[Cd2(tdc)2(bip)2]·7H2O}n (1) and [Cd(tdc)(bib)]n (2) (H2tdc=3,4-thiophenedicarboxylic acid, bip=1,3-bis-(imidazol-2-methyl)propane and bib=1,4-bis(imidazol-2-methyl)butane), have been synthesized and structurally characterized by single-crystal X-ray diffraction. Structural analyses reveal that 1 exhibits a two-dimensional (2D) layered network with 3-connected (6,3) topology, which is further connected into a threedimensional (3D) supramolecular structure by intermolecular hydrogen bonds. However, 2 features a 2D network which can be rationalized as a 4-connected sql net. The results indicate the subtle difference of auxiliary bis(imidazol-2-methyl) ligands may lead to diverse architectures. Moreover, they exhibit luminescence emission in the solid state at room temperature.
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