Electronic structures of a series of Pt clusters n s 2α12 have been n Ε½ . calculated by ab initio method SCFrMP2 . The result shows that compared to that at the saturated coordination site, Pt at the unsaturated coordination site has lower Pt 6 s electron occupancies, and the relationship between th
An ab initio study of the N8C12 heterofullerene
β Scribed by Stefano Evangelisti
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 165 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0020-7608
No coin nor oath required. For personal study only.
β¦ Synopsis
The result of an ab initio investigation on the hypothetical system N C 8 12 is presented. This is a fullerene-like structure with T symmetry. Calculations have been h Ε½ . Ε½ . performed at self-consistent field SCF , second-order MΓΈller-Plesset MP2 , and density Ε½ . Ε½ . functional theory DFT level, using three different basis sets: minimal STO-3G , Valence Ε½ . Ε½ . Ε½ . Double Zeta VDZ , and at SCF level only VDZ plus polarization VDZP . Second-order analytical derivatives have been computed with the STO-3G basis set and the frequencies obtained are all real. The results indicate that, at this level of description, this hypothetical structure is a local minimum on the potential energy surface.
π SIMILAR VOLUMES
In serine proteases (SPs), the Hbond between His57 and Asp102 and that between Gly193 and the transition state intermediate play a crucial role in enzymatic function. To shed light on the nature of these interactions, we have carried out ab initio molecular dynamics simulations on complexes represen
1 loo1 2d Fig. . Dependence of the differences in the enthalpy of formation AAH: " (AHScF@y~li~) -AHfCF(acyclic)) on the substituents of the pyrazolyl groups of boranes 2a-d. and thermodynamic stability of species 4 relative to the corresponding acyclic structure ( 3 / 3 ) upon further increase in t
The reaction of OH radicals with olefins is known to be important in atmospheric chemistry. From experimental data a global mechanism has been proposed, but the regioselectivity of the products is uncertain. In this work, the OH-propene-O 2 reaction has been studied with ab initio molecular orbital
A series of six radical cations of the type (D-L-D) + was investigated at the ab initio unrestricted Hartree-Fock level. One localized and one delocalized conformation were systematically searched by full geometry optimization. At both nuclear arrangements, mostly found as being minima in the symmet