Preparation,structure and properties of dicyano silver complexes of the M(en)3Ag2(CN)4 and M(en)2Ag2(CN)4 type |
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| Institution: | 1. Department of Chemistry, Dibrugarh University, Dibrugarh 786004, Assam, India;2. Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India;1. West Pomeranian University of Technology, Szczecin, Department of Chemical Technology and Engineering, Institute of Chemical Engineering and Environmental Protection Processes, Piastów Avenue 42, 71-065, Szczecin, Poland;2. West Pomeranian University of Technology, Szczecin, Faculty of Biotechnology and Animal Husbandry, Department of Immunology, Microbiology and Physiological Chemistry, Szczecin, Piastów Avenue 45, 70-311, Szczecin, Poland;1. Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea;2. School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea |
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| Abstract: | Complexes of the M(en)3Ag2(CN)4 (M = Ni, Zn, Cd) and M(en)2Ag2(CN)4 (M = Ni, Cu, Zn, Cd) type were prepared and identified by elemental analysis, infrared spectroscopy, measurement of magnetic susceptibility, and X-ray powder diffractometry. The crystal structures of Ni(en)3Ag2(CN)4 (I) and Zn(en)2Ag2(CN)4 (II) were determined by the method of monocrystal structure analysis. Complex I crystallizes in the space group C2/c, a = 1.2639(5), b = 1.3739(4), c = 1.2494(4) nm, β = 113.25(4)°, Dm = 1.86(1), Dc = 1.86 gcm?3 Z = 4, R = 0.0429. The crystal structure of I consists of complex cations Ni(en)3]2+ and complex anions Ag(CN)2]?. Complex II crystallizes in the space group I2/m, a = 0.9150(3), b = 1.3308(4), c = 0.6442(2) nm, β = 95.80(3)°, Dm = 2.14(1), Dc = 2.15 gcm?3, Z = 2, R = 0.0334. Its crystal structure consists of infinite, positively charged chains of the -NCAgCNZn- (en)2]nn+ type and isolated Ag(CN)2]? anions. The atoms of Ag are positioned parallely to the z axis and the AgAg distance is equal to 0.3221(2) nm. |
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