The structures and stabilities of 24-, 25-and 26-mer water clusters were studied by applying the intermediate neglect of differential overlap self consistent field restricted Hartree-Fock method (INDO SCF RHF) after parametrization for H and O atoms. The 24-mer tetrakaidecahedral cage structure is m
Theoretical studies of structures and stabilization energies of (H2O)26, (H2O)27 and (H2O)28 pentakaidecahedral clusters
โ Scribed by Arshad Khan
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 468 KB
- Volume
- 258
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The 26, 27 and 28 mer pentakaidecahedral water clusters were studied by applying the intermediate neglect of differential overlap self-consistent field restricted Hartree-Fock method (INDO SCF RHF) after parameterization for H and O atoms. The 27 and 28 met clusters have one and two water molecules respectively within the cavity of the distorted pentakaidecahedral cage, and the H atoms on the surface are rearranged giving H302, H502, H503, and H703 species. The stabilization energy (SE)/monomer values for the most stable 26, 27 and 28 met pentakaidecahedral clusters are 9.88, 10.58 and 10.98 kcal respectively with all the non H-bonding H atoms (NHB H) directed outward.
๐ SIMILAR VOLUMES
Structuresof (HrO), (W20), H+(HaO)zo (HW20) and H+(HrO)rr (HW21) clusters were determined by applyingtheZemer's intermediate neglect of differential overlap self-consistent field unrestricted Hat-tree-Fock (ZINDO SCF UHF) method after appropriate parametrization and yield a dodecahedral arrangement
MP2 calculations are performed on selected structures of (H,O),. A prism-like structure is predicted to be lowest in energy, but three other structures are found to lie energetically within 0.3 kcal/mol of this structure. The S, hexagonal structure is predicted to lie 0.5-1.0 kcal/mol higher in ener