Synthesis, structure and antimicrobial activities of meso silver(I) histidinate [Ag2(D-his)(L-his)]n (Hhis = histidine) showing different self-assembly from those of chiral silver(I) histidinates |
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| Authors: | Noriko Chikaraishi Kasuga |
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| Institution: | Department of Materials Science, Faculty of Science, Kanagawa University, Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan |
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| Abstract: | An achiral coordination polymer, Ag2(D-his)(L-his)]n, DL-1 (Hhis = histidine), was prepared by slow diffusion of two aqueous solutions of chiral complexes, {Ag(D-his)]2}n (D-2) and {Ag(L-his)]2}n (L-2).1 The crystal structure of DL-1 consists of a linkage of meso-form dimer units through two kinds of Ag?Ag contacts. Crystals of the achiral silver(I) histidinate complex DL-1 exhibited different self-assembly from those of chiral helical polymers (D-3 and L-3). The formation of DL-1 from the two aqueous solutions indicated that ligand exchange around silver(I) atoms took place in water. The antimicrobial activities of DL-1 against selected bacteria, yeasts and molds were evaluated by minimum inhibitory concentration (MIC). |
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| Keywords: | Silver(I) complexes Histidine Ag?Ag contacts Self-assembly Coordination polymers Antimicrobial activities |
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