Quantum-induced symmetry breaking explains infrared spectra of CH(5)(+) isotopologues.
Quantum-induced symmetry breaking explains infrared spectra of CH(5)(+) isotopologues.
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量子诱导对称性破缺解释了 CH(5)( ) 同位素异体的红外光谱
DOI:
10.1038/nchem.574
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发表时间:
2010
期刊:
影响因子:
21.8
通讯作者:
S. Schlemmer
中科院分区:
文献类型:
--
作者:
S. D. Ivanov;O. Asvany;A. Witt;E. Hugo;G. Mathias;B. Redlich;D. Marx;S. Schlemmer
For decades, protonated methane, CH5+, has provided new surprises and challenges for both experimentalists and theoreticians. This is because of the correlated large-amplitude motion of its five protons around the carbon nucleus, which leads to so-called hydrogen scrambling and causes a fluxional molecular structure. Here, the infrared spectra of all its H/D isotopologues have been measured using the ‘Laser Induced Reactions’ technique. Their shapes are found to be extremely dissimilar and depend strongly on the level of deuteration (only CD5+is similar to CH5+). All the spectra can be reproduced and assigned based onab initioquantum simulations. The occupation of the topologically different sites by protons and deuterons is found to be strongly non-combinatorial and thus non-classical. This purely quantum-statistical effect implies a breaking of the classical symmetry of the site occupations induced by zero-point fluctuations, and this phenomenon is key to understanding the spectral changes studied here.
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影响因子:
56.9
作者:
D. Boo;Zhe Liu;A. Suits;John S. Tse;Yuan
通讯作者:
Yuan
DOI:
10.1098/rsta.1988.0002
发表时间:
1988
期刊:
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
影响因子:
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作者:
T. Oka
通讯作者:
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影响因子:
56.9
作者:
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通讯作者:
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DOI:
10.1007/bf00551258
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1974
期刊:
Theoretica chimica acta
影响因子:
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作者:
V. Dyczmons;W. Kutzelnigg
通讯作者:
W. Kutzelnigg
DOI:
10.1039/b419328h
发表时间:
2005
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
D. Gerlich
通讯作者:
D. Gerlich