Solvation of Na+, K+, and their dimers in helium.
Solvation of Na+, K+, and their dimers in helium.
复制标题
Na+,K+及其二聚体的溶剂化。
DOI:
10.1002/chem.201103432
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发表时间:
2012-04-02
影响因子:
4.3
通讯作者:
Scheier, Paul
中科院分区:
文献类型:
--
作者:
An der Lan, Lukas;Bartl, Peter;Leidlmair, Christian;Jochum, Roland;Denifl, Stephan;Echt, Olof;Scheier, Paul
Helium atoms bind strongly to alkali cations which, when embedded in liquid helium, form so-called snowballs. Calculations suggest that helium atoms in the first solvation layer of these snowballs form rigid structures and that their number (n) is well defined, especially for the lighter alkalis. However, experiments have so far failed to accurately determine values of n. We present high-resolution mass spectra of Na+Hen, K+Hen, Na2+Hen and K2+Hen, formed by electron ionization of doped helium droplets; the data allow for a critical comparison with several theoretical studies. For sodium and potassium monomers the spectra indicate that the value of n is slightly smaller than calculated. Na2+Hen displays two distinct anomalies at n=2 and n=6, in agreement with theory; dissociation energies derived from experiment closely track theoretical values. K2+Hen distributions are fairly featureless, which also agrees with predictions.
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影响因子:
4.3
作者:
da Silva, Filipe Ferreira;Waldburger, Philipp;Scheier, Paul
通讯作者:
Scheier, Paul
影响因子:
4.4
作者:
BRECHIGNAC, C;CAHUZAC, P;WEINER, J
通讯作者:
WEINER, J
影响因子:
4.4
作者:
Hiraoka, K;Shimizu, A;Yamabe, S
通讯作者:
Yamabe, S
影响因子:
4.4
作者:
Henne, U;Toennies, JP
通讯作者:
Toennies, JP
影响因子:
2
作者:
Foerste, M;Guenther, H;Putlitz, GZ
通讯作者:
Putlitz, GZ