Molecular interpretation of water structuring and destructuring effects: hydration of alkanediols.
Molecular electrostatic potential (MESP) guidelines are employed for understanding the reactivity and hydration patterns in alkanediol molecules. The deeper oxygen lone pair MESP minima indicate stronger basicity of 1,n-diols and 2,4-pentanediol (2,4-PeD) as compared to that of vicinal diols. The existence and strength of the intramolecular hydrogen bond in diols are gauged in terms of the electron density at the bond saddle points. A model named electrostatic potential for intermolecular complexation (EPIC) is used for generating the structures of hydrated complexes, which are subsequently subjected to ab initio calculations at Møller-Plesset second-order perturbation level of theory. Further, the nature of water...water as well as diol...water interactions is appraised employing many-body energy decomposition analysis. It is seen that water...water interactions are more favorable in vicinal diol...6H(2)O than those in 1,n-diol...6H(2)O (n=3, 4, 5,...) complexes. Exactly opposite trends are shown by diol...water interaction energies. Thus vicinal diols, being more effective at strengthening water...water network, are expected to act as water structuring agents, whereas the non-vicinal diols are expected to be water destructuring agents.[1]References
- Molecular interpretation of water structuring and destructuring effects: hydration of alkanediols. Deshmukh, M.M., Sastry, N.V., Gadre, S.R. The Journal of chemical physics. (2004) [Pubmed]
Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenesOpen Access LicencePrivacy PolicyTerms of Useapsburg
