Variationally improving the Inui wavefunction for H2
โ Scribed by Valerio Magnasco; Andrea Siciliano; Giuseppe Figari
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 715 KB
- Volume
- 213
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
The two-parameter Inui wavefunction for the ground and excited states of Hz is improved variationally through an expansion in powers of confocal spheroidal coordinates including the interelectronic distance. A single 69-term expansion gives, for both states, fairly accurate interaction energies in the region of the chemical and van der Waals bond.
๐ SIMILAR VOLUMES
A recent article by Jackson, McEachran and Cohen on the James wavefunction for the ground state of Hz completely duplicates previous efforts by the present authors.
The ground state exxxgies of Hg were calculated for the internuclear separations R = 2.0, 1.8, 2.0, 2.2, 3.0, 4.0 and 5.0 au. The integral transform gaussian functions k&r) were used as atomic orbitals. The results surpass corresponding results obtained with scaled 1s functions. The equilibrium inte
It is shown thnt the superposition of wavefunctions centered on the nuclei and floating wavefunctions represents the distribution of the electronic chnrge more accuratel\-than anv of these two functions sepnrs.:.l~. The mean-squnre values of electronic coordinates are calculated.
The two-center spherical limits for the energies, (a?>, (r2), equilibrium distances and vibration frequencies are obtained for the ground state of H$. It is found, inter alia, that a linear combination oE two floating spherical functions approximates the exact ground state energy to within 0.7%.