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Two one‐dimensional coordination polymers generated from a new benzimidazole bridging ligand and CdX2 (X = Br and I)

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The novel asymmetric bridging ligand 1‐[(pyridin‐3‐yl)methyl]‐2‐[4‐(pyridin‐3‐yl)phenyl]‐1H‐benzimidazole (L) has been used to construct the coordination polymers catena‐poly[[[dibromidocadmium(II)]‐μ3‐1‐[(pyridin‐3‐yl)methyl]‐2‐[4‐(pyridin‐3‐yl)phenyl]‐1H‐benzimidazole] monohydrate], {[CdBr2(C24H18N4)]┬ĚH2O} n , (I), and catena‐poly[[diiodidocadmium(II)]‐μ3‐1‐[(pyridin‐3‐yl)methyl]‐2‐[4‐(pyridin‐3‐yl)phenyl]‐1H‐benzimidazole], [CdI2(C24H18N4)] n , (II). Compounds (I) and (II) are closely related one‐dimensional polymers based on 16‐ and 20‐membered macrocycles along the chains, but they are not isomorphous. The chains are crosslinked into a two‐dimensional network via hydrogen bonds and π–π interactions in (I), and into a three‐dimensional framework through π–π interactions in (II). One well‐ordered solvent water molecule per asymmetric unit is included in (I) and forms O...Br hydrogen bonds.
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Document Type: Research Article

Affiliations: College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, People's Republic of China

Publication date: May 15, 2013

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