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Two different one‐dimensional supramolecular chains formed from the reaction of 2‐[1‐(pyridin‐4‐ylmethyl)‐1 H ‐benzimidazol‐2‐yl]quinoline with two different precursors, Co(NO 3 ) 2 and CoCl 2
Author(s) -
Wu XiangWen,
Zhang Dong,
Ma JianPing
Publication year - 2014
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229614009000
Subject(s) - quinoline , chemistry , acetonitrile , supramolecular chemistry , ligand (biochemistry) , pyridine , octahedron , crystallography , stereochemistry , dichloromethane , molecule , medicinal chemistry , crystal structure , solvent , biochemistry , receptor , organic chemistry , chromatography
Two different one‐dimensional supramolecular chains with Co II cations have been synthesized based on the semi‐rigid ligand 2‐[1‐(pyridin‐4‐ylmethyl)‐1 H ‐benzimidazol‐2‐yl]quinoline ( L ), obtained by condensation of 2‐(1 H ‐benzimidazol‐2‐yl)quinoline and 4‐(chloromethyl)pyridine hydrochloride. Starting from different Co II salts, two new compounds have been obtained, viz. catena ‐poly[[[dinitratocobalt(II)]‐μ‐2‐[1‐(pyridin‐4‐ylmethyl)‐1 H ‐benzimidazol‐2‐yl]quinoline] dichloromethane monosolvate acetonitrile monosolvate], {[Co(NO 3 ) 2 (C 22 H 16 N 4 )]·CH 2 Cl 2 ·CH 3 CN} n , (I) and catena ‐poly[[[dichloridocobalt(II)]‐μ‐2‐[1‐(pyridin‐4‐ylmethyl)‐1 H ‐benzimidazol‐2‐yl]quinoline] methanol disolvate], {[CoCl 2 (C 22 H 16 N 4 )]·2CH 3 OH} n , (II). In (I), the Co II centres lie in a distorted octahedral [CoN 3 O 3 ] coordination environment. {Co(NO 3 ) 2 L } n units form one‐dimensional helical chains, where the L ligand has different directions of twist. The helical chains stack together via interchain π–π interactions to form a two‐dimensional sheet, and another type of π–π interaction further connects neighbouring sheets into a three‐dimensional framework with hexagonal channels, in which the acetonitrile molecules and disordered dichloromethane molecules are located. In (II), the Co II centres lie in a distorted trigonal–bipyramidal [CoCl 2 N 3 ] coordination environment. {CoCl 2 L } n units form one‐dimensional chains. The chains interact via C—H...π and C—H...Cl interactions. The result is that two‐dimensional sheets are generated, which are further linked into a three‐dimensional framework via interlayer C—H...Cl interactions. When viewed down the crystallographic b axis, the methanol solvent molecules are located in an orderly manner in wave‐like channels.