Naslov
Nuclear Magnetic Resonance Parameters of Water Hexamers

Autori
Bilalbegović, Goranka

Izvornik
Journal of Physical Chemistry. A (1089-5639) 114 (2010), 2; 715-720

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
NMR; water clusters; density functional theory; GIPAW

Sažetak
Nuclear magnetic resonance 1H, 16O, and 17O chemical shifts, as well as 17O quadrupolar parameters in several isomers of water hexamer clusters, are studied using density functional theory calculations and the gauge including projector augmented wave (GIPAW) pseudopotential method. The prism, cage, book, bag, chain, and two cyclic isomers are investigated, and structures with 16O and 17O nuclei are examined. It is found that the hydrogen and oxygen chemical shifts show a substantial variation. In six more stable hexamers, all quadrupole coupling constants decrease and asymmetry parameters increase in a comparison with bulk water, whereas a chain isomer shows an opposite behavior. The values of NMR parameters are in reasonable agreement with existing results obtained by more computationally demanding methods.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA