### Abstract

The problem of determining the total wave functions and energies of molecular stationary states reduces to solving a Schrödinger equation with a vibrational-rotational Hamiltonian. This is achieved by a unitary transformation of the molecular Hamiltonian H with its successive diagonalization on a nondegenerate electronic state |e〉. It is shown that the molecular wave functions related to the electronic states |e〉 are of the form G|e〉|g〉_{(e)}, and their corresponding energy value is the sum e{open}_{e} + e{open}_{g}^{(e)}, where e{open}_{g}^{(e)} and |g〉^{(e)} are the eigenvalues and eigenfunctions of the vibrational-rotational Hamiltonian, determined by means of the unitary operator G. It is shown that the total energy and molecular wave functions are uniquely determined, despite the arbitrariness in choosing G. As an example the vibrational-rotational operator and molecular wave functions are given for the simplest choice of the operator G.

Original language | English |
---|---|

Pages (from-to) | 299-303 |

Number of pages | 5 |

Journal | Soviet Physics Journal |

Volume | 18 |

Issue number | 3 |

DOIs | |

Publication status | Published - 1 Mar 1975 |

Externally published | Yes |

### ASJC Scopus subject areas

- Physics and Astronomy(all)

## Fingerprint Dive into the research topics of 'Partial diagonalization in solving electron-nuclear problems in molecules'. Together they form a unique fingerprint.

## Cite this

*Soviet Physics Journal*,

*18*(3), 299-303. https://doi.org/10.1007/BF00889286