氦三聚体
| 氦三聚体 | |
|---|---|
| |
| 识别 | |
| CAS号 | 12596-21-3 |
| PubChem | 18688918 |
| SMILES |
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| 性质 | |
| 化学式 | He3 |
| 摩尔质量 | 12.01 g·mol−1 |
| 若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。 | |
氦三聚体是一个由三个氦原子组成，靠范德华力键合的化合物。它比氦二聚体更稳定。氦-4原子的三聚体处于埃菲莫夫态。[1][2] 氦-3推测可以三聚，尽管含有氦-3的氦二聚体在基态完全不稳定。[3]
氦三聚体分子很大，大于100 Å（1x10-8m),甚至比氦二聚体更大。三个氦原子不是以正三角形排列，而是任意形状的三角形。[4]
参考资料
[编辑]- ^ Kolganova, Elena A. Helium Trimer in the Framework of Faddeev Approach (PDF). Physics of Particles and Nuclei. 26 Nov 2010, 41 (7): 1108–1110 [28 February 2015]. Bibcode:2010PPN....41.1108K. doi:10.1134/S1063779610070282. （原始内容存档 (PDF)于2016-03-04）.
- ^ Kolganova, E. A.; Motovilov, A. K.; Sandhas, W. The 4He Trimer as an Efimov System. Few-Body Systems. 4 May 2011, 51 (2–4): 249–257. Bibcode:2011FBS....51..249K. arXiv:1104.1989
. doi:10.1007/s00601-011-0233-x.
- ^ Al Taisan, Nada Ahmed. Spectroscopic Detection of the Lithium Helium (LiHe) van der Waals Molecule (PDF) (学位论文). May 2013 [2015-05-03]. （原始内容 (PDF)存档于2016-03-04）.
- ^ Goethe University Frankfurt. Efimov state in the helium trimer observed. 30 April 2015 [2 May 2015]. （原始内容存档于2019-04-27）.
参见
[编辑]扩展阅读
[编辑]- Suno, Hiroya. Geometrical structure of helium triatomic systems: comparison with the neon trimer. Journal of Physics B: Atomic, Molecular and Optical Physics. 14 January 2016, 49 (1): 014003. Bibcode:2016JPhB...49a4003S. doi:10.1088/0953-4075/49/1/014003.
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