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Volumn 9, Issue 3, 2003, Pages 628-634

Determining the strengths of hydrogen bonds in solid-state ammonia and urea: Insight from periodic DFT calculations

Author keywords

Ammonia; Car Parrinello; Hydrogen bonds; Plane wave density functional calculations; Urea

Indexed keywords

CRYSTAL STRUCTURE; HYDROGEN BONDS; PROBABILITY DENSITY FUNCTION; QUANTUM THEORY; UREA;

EID: 0037415849     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/chem.200390067     Document Type: Article
Times cited : (38)

References (37)
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    • Dovesi, R.1    Pisani, C.2    Roetti, C.3    Causà, M.4    Saunders, V.R.5
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    • note
    • In this work we take the hydrogen bond definition from ref. [1b], namely that the interaction includes contributions from electrostatics (including dipole-dipole interactions), polarisation, charge transfer and van der Waals forces (including dispersion, i.e., induced dipole - induced dipole interactions). Our calculated values therefore include all these terms, with the exception of dispersion, which is not modelled with the current generation of DFT functionals. Dispersion effects are, in any case, expected to make only very small contributions to the total interaction energies for the two compounds investigated in this study.


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