Abstract
An SCF LCAO MO ground-state wavefunction is presented for the pyrrole molecule. All electrons, σ and π, are considered, and all the necessary many-center integrals are included in this work. The analysis of the wavefunction reveals that there is a strong two-way charge transfer on the nitrogen atom. (This reopens the problem of the validity of π-electron computations, as discussed in the paper.) The lowest π-electron MO is below the highest σ electron. The hybridization of the σ electrons in the carbon and nitrogen atoms is not s1p2, but deviates strongly for the nitrogen atom and slightly for the carbon atoms.
Keywords
Affiliated Institutions
Related Publications
Electronic States of the Amide Group
The presence of a moderately strong band falling between the n→π* and π→π* (N→V1) transitions of the amide group has been observed for the first time. All-electron SCF calculati...
Relativistic effects in <i>a</i> <i>b</i> <i>i</i> <i>n</i> <i>i</i> <i>t</i> <i>i</i> <i>o</i> effective core potential studies of heavy metal compounds. Application to HgCl2, AuCl, and PtH
A method is described for obtaining l-dependent relativistic effective core potentials (ECPs) from Dirac–Fock self-consistent field atomic wave functions. These potentials are d...
Polarization CI wavefunctions: the valence states of the NH radical
The polarization configuration interaction (POL–CI) wavefunction is described. Calculations are reported for the X 3Σ−, a 1Δ, b 1Σ+, A 3Π, and c 1Π states of the NH molecules in...
Universal variational functionals of electron densities, first-order density matrices, and natural spin-orbitals and solution of the <i>v</i> -representability problem
Universal variational functionals of densities, first-order density matrices, and natural spin-orbitals are explicitly displayed for variational calculations of ground states of...
Atomic charges, dipole moments, and Fukui functions using the Hirshfeld partitioning of the electron density
Abstract In the Hirshfeld partitioning of the electron density, the molecular electron density is decomposed in atomic contributions, proportional to the weight of the isolated ...
Publication Info
- Year
- 1967
- Type
- article
- Volume
- 46
- Issue
- 12
- Pages
- 4725-4730
- Citations
- 145
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1063/1.1840626