Chair-form [Ag2(1,2-bimb)2] in silver(I) complexes containing the ditopic ligand 1,2-bis(1-imidazolylmethyl)benzene (1,2-bimb) |
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| Authors: | Hai-Yan Tan Huang-Dong Ou |
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| Institution: | a School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou, Guangdong 510275, China
b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200023, China |
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| Abstract: | The ditopic ligand 1,2-bis(1-imidazolylmethyl)benzene (1,2-bimb) and its silver(I) complexes Ag2(1,2-bimb)2](PF6)2 (1) and {Ag2(1,2-bimb)2]2(SbF6)4}n (2) were prepared and their structures characterized by X-ray crystallography. Both complexes contain the chair-form unit Ag2(1,2-bimb)2]2+ with Ag(I) linearly coordinated by NIm (Im=1-imidazolyl) from the Im groups of two 1,2-bimb. However, the Ag2(1,2-bimb)2]2+ units are positioned differently in forming 1D infinite chains through weak argentophilic interactions: linear chains in 1 with the units oriented in same direction are formed via Ag?π interactions, while polymeric chains constructed via Ag?Ag interactions in 2 are observed with the units arranged in alternate directions. Differences in supramolecular structures may be a result of different size of the anions. |
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| Keywords: | Silver complexes 1 2-bis(1-imidazol-ylmethyl)benzene Chair-configuration Crystal structure Ditopic ligand |
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