| Synthesis and Crystal Structure of Complex: [Co(cdm)_2(H_2O)_4].2H_2O (cdm=Carbamyldicyanomethanide Anion) |
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| 作者姓名： | 石敬民 尹海民 孙立靖 于文涛 许文 赵明根 |
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| 作者单位： | SHI Jing-Min②1 YIN Hai-Liang1 SUN Li-Jing1 YU Wen-Tao2 XU Wen1 ZHAO Ming-Gen3 1(Department of Chemistry，Shandong Normal University，Jinan 250014，China) 2(Institute of Crystal Matrials，Shandong University，Jinan 250010，China) 3(Department of Che |
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| 基金项目： | This work was supported as key project by the Natural Scientific Foundation of Shandong Province |
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| 摘 要： | 1 INTRODUCTION Crystal engineering and the design of solid-state architectures have recently become areas of increasing interest1, 2]. Such crystal engineering may afford new materials with useful properties such as catalytic activity, micro-porosity, nonlinear optical activity, cooperative magnetic behavior and so on. Polynitrile-ligand is one of the ideal multi-functional ligands for crystal engineering and many complexes with polynitriles as ligands have been found to show the spe…
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Synthesis and Crystal Structure of Complex: [Co(cdm)2(H2O)4]·2H2O(cdm = Carbamyldicyanomethanide Anion) |
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| Abstract: | Mononuclear complex Co(cdm)2(H2O)4]?H2O was synthesized by sodium carbamyldicyanomethanide (Nacda) and cobalt perchlorate. The crystal belongs to monoclinic system, space group P21/n with a = 9.366(3), b = 7.392(3), c = 12.039(4)? = 108.335(4)? V = 791.2(5)?, Z = 2, Mr (C8H16CoN6O8) = 383.2, Dc = 1.608 g/cm3, F(000) = 394, = 1.135 mm-1, = 0.71073 ? The structure was refined to R = 0.0240 and wR = 0.0632 for 1267 observed reflections (I > 2(I)). The cobalt(II) atom in the complex is coordinated by two nitrile-nitrogen atoms and four oxygen atoms of H2O, which forms a slightly distorted coordination octahedron around the cobalt(II) ion. The mononuclear complexes are connected by hydrogen bondings and in the crystal there exists a cavity where the uncoordinated H2O molecules are trapped. |
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| Keywords: | synthesis crystal structure cobalt complex |
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