Nucleobase-fluorobenzene interactions:: Hydrogen bonding wins over π stacking

被引：65
作者：
Leist, Roman
Frey, Jann A.
Ottiger, Philipp
Frey, Hans-Martin
Leutwyler, Samuel
Bachorz, Rafal A.
Klopper, Wim
机构：
[1] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland
[2] Univ Karlsruhe, Inst Chem Phys, CFN, D-76128 Karlsruhe, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 39期
关键词：
pi interactions; ab initio calculations; hydrogen bonds; laser spectroscopy; stacking interactions;
D O I：
10.1002/anie.200701171
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Graph Presented) The relative importance of H-bonding and π stacking in isolated cold complexes of 2-pyridone (2PY) with 1,2,4,5-tetrafluorobenzene (4FB), pentafluorobenzene (5FB), and hexafluorobenzene (6FB) was investigated. Unexpectedly, only 2PY·6FB exhibits π stacking in the gas phase and a broad UV spectrum. The other 2PY·nFB complexes show narrow absorption spectra characteristic of doubly H-bonded dimers (see picture). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：7449 / 7452
页数：4
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