| 〔Co(H2O)4(NCS)2〕(18-冠-6)的分子和晶体结构 |
| MOLECULAR AND CRYSTAL STRUCTURE OF [Co(H2O)4(NCS)2] (18-CROWN-6) |
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| 摘要: [Co(H2O)4(NCS)2](18-冠-6)的晶体属于正交晶系,空间群:D-P。晶胞参数:a=9.167(2)Å,b=13.268(1)Å,c=19.292(3)Å,Z=4。结构用重原子法解出,经最小二乘法修正,最终的=0.029。钴(Ⅱ)与两个异硫氰酸根、四个水分子配位,形成顺式八面体配位单元,并通过其中的水分子与18-冠-6以氢键相结合,形成标题的分子和晶体。 |
| 关键词: 配合物 晶体结构 |
| 基金项目: |
| Abstract: The title complex crystal was obtained by solvent evaporation method in methanol. The intensity data were collected on CAD-4 four circle diffractometer. The crystal belongs to rhombic system. Space group is D2h16-Pnma with a=9.167(2)Å. b=13.268(1)Å, c= 19.292(3)Å, Z= 4. The structure was solved by heavy-atom techniques and ΔF syntheses, and then refined by the full-matrix least-square method. The final value of R is 0.029.Not directly combining the 18-crown-6, the cobalt(Ⅱ) ion coordinates with two cis-isothiocyanates and four water molecules to form a distorted octahydral complex unit, in which Co-N or Co-O bonds averaged lengths are 2.063Å or 2.125Å respectively, and angles between ligands are 81.8-97.7°. The water molecules in the unit combine symmetric three oxygen atoms of a 18-crown-6 ligand by hydrogen bonds, forming a title complex molecule as well as molecular chains in'the crystalline. |
| Keywords: crown complex crystal structure |
| 投稿时间：1987-01-03 |
| 摘要点击次数: 2269 |
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| 樊悦朋,杜高英,张文兴.〔Co(H2O)4(NCS)2〕(18-冠-6)的分子和晶体结构[J].无机化学学报,1988,4(2):27-31. |
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