Low-dimensional framework constructed by silver(I) trifluoromethylsulfonate with 1,5-bis(benzimidazol-2-yl)-3-oxapentane or 1,6-bis(benzimidazol-2-yl)-2,5-dioxahexane

Zhongshan University, 中山, Guangdong, China
Inorganica Chimica Acta (Impact Factor: 2.05). 01/2003; 342:107-113. DOI: 10.1016/S0020-1693(02)01153-2


The ligands 1,6-bis(benzimidazol-2-yl)-2,5-dioxahexane (DEBIm) and 1,5-bis(benzimidazol-2-yl)-3-oxapentane (OEBIm) reacted with silver(I) trifluoromethylsulfonate producing [Ag(DEBIm)](CF3SO3) (1) and [Ag(OEBIm)](CF3SO3) (2), respectively. The cation [Ag(L)]+(L=OEBIm or DEBIm) in both complexes is bent in semi-enclosed form due to the presence of oxygen in the ligands which forms either coordination bond or weak non-bonding interaction with the Ag(I) ion. Crystallographic analyses showed that [Ag(DEBIm)]+ (in 1) and [Ag(OEBIm)]+ (in 2) are assembled differently by the anion CF3SO3− via hydrogen bond N(C)H⋯O to give 1-D chain and via NH⋯O and CH⋯F to give 2-D network, respectively. The complexes were also identified by IR and 1H NMR spectroscopy.

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