Does electron density in bond critical point reflect the formal charge distribution in H-bridges? The case of charge-assisted hydrogen bonds (CAHBs)
✍ Scribed by Barbara Bankiewicz; Marcin Palusiak
- Book ID
- 104016830
- Publisher
- Elsevier
- Year
- 2011
- Tongue
- English
- Weight
- 703 KB
- Volume
- 966
- Category
- Article
- ISSN
- 2210-271X
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✦ Synopsis
The charge-assisted hydrogen bond (CAHB) was investigated for a set of H-bridges of N-HÁ Á ÁCl type. The properties of these bonds, i.e. interaction energy and electron density measured in a specific point of the bond, were represented as functions of HÁ Á ÁCl distance. It appears that the energy of interaction is very strongly affected by formal charges, which may be explained by the presence of efficient interaction between formal ions. Surprisingly, the electron density measured in the H-bond critical point is totally independent of the formal charges. For the given HÁ Á ÁCl distance the q BCP value is the same, no matter whether neutral molecules or oppositely charged ions interact with each other.