【摘 要】
：
Mononuclear complex [Co(cdm)2(H2O)4]@2H2O was synthesized by sodium carbamyldicyanomethanide (Nacda) and cobalt perchlorate. The crystal belongs to monoclinic s
【机 构】
：
Department of Chemistry,Institute of Crystal Matrials
论文部分内容阅读
Mononuclear complex [Co(cdm)2(H2O)4]@2H2O 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)?, β = 108.335(4)°, V = 791.2(5)?3, Z = 2, Mr (C8H16CoN6O8) = 383.2, Dc = 1.608 g/cm3, F(000) = 394, μ = 1.135 mm(1, λ = 0.71073 ?. The structure was refined to R = 0.0240 and wR = 0.0632 for 1267 observed reflections (I > 2σ(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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