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Do Special Noncovalent π–π Stacking Interactions Really Exist?
Author(s) -
Grimme Stefan
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200705157
Subject(s) - stacking , van der waals force , intermolecular force , non covalent interactions , chemistry , molecule , computer science , chemical physics , crystallography , hydrogen bond , organic chemistry
Van der Waals complexes are formed by almost all neutral molecules, which begs the question as to what is so special about the interaction between parallel stacks of arenes. The term π–π stacking interactions should primarily be used as a structural descriptor for unsaturated systems. Genuine π–π interactions are caused by specific electron correlations that are only at work for short intermolecular distances.