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
Theoretical studies of tetrakaidecahedral structures of (H2O)24, (H2O)25 and (H2O)26 clusters
โ Scribed by Arshad Khan
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 440 KB
- Volume
- 253
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
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 more stable than the isomer in which several water molecules are bonded to a dodecahedral cage structure by about 3 kcal/mol. The stabilization energy (SE) values per monomer molecule for the most stable 24-, 25-and 26-mer tetrakaidecahedral structures are 10.1, 10.7 and 10.8 kcal/mol, respectively.
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