Four New Coordination Polymers Constructed by 2-(4-Thiazolyl)benzimidazole and 1,3,5-Benzenetricarboxylic Acid

• Published in: Journal of chemical crystallography 2017-04, Vol.47 (1-2), p.1-9
• Main Authors: Tian, Ai-xiang, Ji, Xue-bin, Sun, Na, Xiao, Ru, Zhao, Ying-ying, Ni, Huai-ping, Tian, Yan, Ying, Jun
• Format: Article
• Language: English
• Subjects: Chemical bonds; Chemistry; Chemistry and Materials Science; Coordination compounds; Coordination polymers; Crystal structure; Crystallography and Scattering Methods; Hydrogen bonding; Infrared spectroscopy; Inorganic Chemistry; Ligands; Organometallic Chemistry; Original Paper; Physical Chemistry; Polymers; Single crystals; Synthesis; Transition metals; X-ray diffraction
• ISSN: 1074-1542; 1572-8854
• DOI: 10.1007/s10870-016-0674-7

Through using mixed N/S-containing ligand 2-(4-thiazolyl)benzimidazole ( L ), four new metal–organic coordination polymers, namely, [Co 2 L 4 (HBTC)(H 2 O) 2 ] ( 1 ), [Cu 2 L 2 (HBTC) 2 ]·H 2 O ( 2 ), [Ni L 3 ]·(HBTC)·H 2 O ( 3 ) and [Ni L 3 ]·H 2 O ( 4 ), have been synthesized under hydrothermal conditions, further assisted by a second organic ligand, benzenetricarboxylic (H 3 BTC). The structures of 1 – 4 have been determined by single crystal X-ray diffraction analyses and further characterized by elemental analyses and IR spectra. Compound 1 contains two {Co L 2 (H 2 O)} fragments, which are connected by a BTC molecule to form a discrete “V”-type subunit. The hydrogen bonding interactions between N3⋯O1 atoms induce a 1D chain of 1 . Complex 2 includes bi-nuclear Cu II subunits, which are linked by BTC ligands to form a 2D layer. Each bi-nuclear Cu subunit is linked by four BTC molecules. Both complexes 3 and 4 are based on [Ni L 3 ] subunits. In complex 3 , when NiCl 2 ·6H 2 O was used as reactant, a discrete BTC molecule is captured as a counter anion. In contrast, when using reactant NiSO 4 ·6H 2 O, [Ni L 3 ]·H 2 O ( 4) is formed. Both complexes 3 and 4 contain abundant hydrogen bonding interactions. In these complexes, the N donors in L ligand coordinate with transition metals and the S atoms participate in hydrogen bonding interactions. Graphical Abstract Through using mixed N/S-containing ligand 2-(4-thiazolyl)benzimidazole ( L ), four new metal-organic coordination polymers, namely, [Co 2 L 4 (HBTC)(H 2 O) 2 ] ( 1 ), [Cu L (HBTC)] ( 2 ), [Ni L 3 ]·(HBTC)·H 2 O ( 3 ) and [Ni( L ) 3 ]·H 2 O ( 4 ), have been synthesized under hydrothermal conditions further assisted by the second organic ligand benzentricaboxylate (H 3 BTC).