Coordination Number of Li+ in Nonaqueous Electrolyte Solutions Determined by Molecular Rotational Measurements
文献类型：期刊论文
| 作者 | Yuan, Kaijun1,2; Bian, Hongtao2; Shen, Yuneng1; Jiang, Bo1; Li, Jiebo2; Zhang, Yufan2; Chen, Hailong2; Zheng, Junrong2 |
| 刊名 | journal of physical chemistry b
 |
| 出版日期 | 2014-04-03 |
| 卷号 | 118期号:13页码:3689-3695 |
| 通讯作者 | 郑俊荣 |
| 英文摘要 | the coordination number of li+ in acetonitrile solutions was determined by directly measuring the rotational times of solvent molecules bound and unbound to it. the cn stretch of the li+ bound and unbound acetonitrile molecules in the same solution has distinct vibrational frequencies (2276 cm(-1) vs 2254 cm(-1)). the frequency difference allows the rotation of each type of acetonitrile molecule to be determined by monitoring the anisotropy decay of each cn stretch vibrational excitation signal. regardless of the nature of anions and concentrations, the li+ coordination number was found to be 4-6 in the libf4 (0.2-2 m) and lipf6 (1-2 m) acetonitrile solutions. however, the dissociation constants of the salt are dependent on the nature of anions. in 1 m libf4 solution, 53% of the salt was found to dissociate into lit, which is bound by 4-6 solvent molecules. in 1 m lipf6 solution, 72% of the salt dissociates. 2d ir experiments show that the binding between li+ and acetonitrile is very strong. the lifetime of the complex is much longer than 19 ps. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | vibrational echo spectroscopy ; aqueous-solutions ; lithium ; ion ; solvation ; batteries ; energy ; complexes ; dynamics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333948200023 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/144288]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 2.Rice Univ, Dept Chem, Houston, TX 77005 USA |
| 推荐引用方式 GB/T 7714 | Yuan, Kaijun,Bian, Hongtao,Shen, Yuneng,et al. Coordination Number of Li+ in Nonaqueous Electrolyte Solutions Determined by Molecular Rotational Measurements[J]. journal of physical chemistry b,2014,118(13):3689-3695. |
| APA | Yuan, Kaijun.,Bian, Hongtao.,Shen, Yuneng.,Jiang, Bo.,Li, Jiebo.,...&Zheng, Junrong.(2014).Coordination Number of Li+ in Nonaqueous Electrolyte Solutions Determined by Molecular Rotational Measurements.journal of physical chemistry b,118(13),3689-3695. |
| MLA | Yuan, Kaijun,et al."Coordination Number of Li+ in Nonaqueous Electrolyte Solutions Determined by Molecular Rotational Measurements".journal of physical chemistry b 118.13(2014):3689-3695. |
入库方式： OAI收割
来源：大连化学物理研究所
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