An X-ray diffraction study on the structure of Li2SO4 center dot 20H(2)O solution
文献类型：期刊论文
| 作者 | Fang, CH; Ma, PH; Fang, Y; Yang, B; Lei, YC |
| 刊名 | ACTA CHIMICA SINICA
 |
| 出版日期 | 2000 |
| 卷号 | 58期号:11页码:1393-1397 |
| 关键词 | Li2so4 Solution Structure X-ray Diffraction |
| 文献子类 | Article |
| 英文摘要 | The structure of Li2SO4 . 2OH(2)O solution has been investigated with a theta - 2 theta type X-ray diffractometer. An empirical formula, r(x-y) = 0. 618 lambda /sin theta, has been applied to carry out qualitatively structural analysis of the diffraction curve, and another r(x-y) = 7.766/s to calculate the interatomic distance of some strong peaks from the reduced intensity curve. The refinement results of structrural models show that the dominant species in the solution are tetraquolithium and octaaquosulfate ion. The Li - H2O distance is fixed at 0.20nm when the coordination number is 4. The water - water distance at four vertexes in the tetrahedron is 0.321nm with n = 6. The distance between lithium ion and water molecules on the second hydration shell was determined to be about 0.425nm, with n = 12. The S - W distance of hydrated sulfate ion with 8 water molecules is estimated to be 0. 386nm. Four interactions of oxygen atom O-s in sulfate ion and the water molecules have been expounded by a symmetric hydration model and the distances of O-s - W(1), O-s - W(2), O-s - W(3) and O-s - W(4) were refined to be 0.288, 0.316, 0.396 and 0.469nm respectively. No reliable enough evidence shows that there are the contact ion - pair and the solvent - shared ion - pair in the solution owing to very low scattering power of lithium. |
| WOS关键词 | AB-INITIO ; HYDRATION ; WATER |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000165592800017 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/6030]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 |
| 作者单位 | Chinese Acad Sci, Inst Salt Lakes, Xian 710043, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, CH,Ma, PH,Fang, Y,et al. An X-ray diffraction study on the structure of Li2SO4 center dot 20H(2)O solution[J]. ACTA CHIMICA SINICA,2000,58(11):1393-1397. |
| APA | Fang, CH,Ma, PH,Fang, Y,Yang, B,&Lei, YC.(2000).An X-ray diffraction study on the structure of Li2SO4 center dot 20H(2)O solution.ACTA CHIMICA SINICA,58(11),1393-1397. |
| MLA | Fang, CH,et al."An X-ray diffraction study on the structure of Li2SO4 center dot 20H(2)O solution".ACTA CHIMICA SINICA 58.11(2000):1393-1397. |
入库方式： OAI收割
来源：青海盐湖研究所
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