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Chemical interpretation of molecular electron density distributions
Author(s) -
Henn Julian,
Leusser Dirk,
Stalke Dietmar
Publication year - 2007
Publication title -
journal of computational chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.907
H-Index - 188
eISSN - 1096-987X
pISSN - 0192-8651
DOI - 10.1002/jcc.20747
Subject(s) - natural bond orbital , electron density , molecule , chemical bond , three center two electron bond , sextuple bond , atoms in molecules , chemistry , yield (engineering) , bond length , quantum chemical , resonance (particle physics) , density functional theory , non bonding orbital , interpretation (philosophy) , bond energy , bond order , electron , molecular orbital , computational chemistry , atomic physics , physics , quantum mechanics , thermodynamics , computer science , programming language
In this study, the two small molecules HS(CH)(CH 2 ), 1 , and F(CH) 4 F, 2 , are presented, which yield different chemical interpretations when one and the same density is interpreted either by means of Natural Bond Orbital and subsequent Natural Resonance Theory application or by the Quantum Theory of Atoms In Molecules. The first exhibits a SC bond in the orbital based approach, whereas the density based Quantum Theory of Atoms In Molecules detects no corresponding bond. In F(CH) 4 F a F···F bond is detected in the density based approach, whereas in the orbital based approach no corresponding bond is found. Geometrical reasons for the presence of unexpected and the absence of expected bond critical points are discussed. © 2007 Wiley Periodicals, Inc. J Comput Chem, 2007