Abstract
This analysis is based on taking into account the spin–orbit interaction in the form of the Breit–Pauli operator in the electron Hamiltonian of the molecule. As the latter, we consider the Hamiltonian of the octahedral molecule \(\tilde {Y}~{{X}_{6}}\) with an odd number of electrons and a heavy central atom \(\tilde {Y}\) in the orbital 2D state with one outer electron and six X-ligand atoms forming a closed electron shell. The key element of the analysis is the construction of symmetrized combinations of products of eg modes and Pauli matrices, followed by the expansion of the electron Hamiltonian in a Taylor series in terms of the mentioned symmetrized combinations. In this case, the contributions of the main, first, and second orders in terms of powers according to the eg mode of normal vibrations are taken into account. A 6 × 6 vibronic matrix dependent on two eg modes is calculated in the diabatic electron basis constructed from the products of the components of the orbital D states and electronic spin functions. The vibronic matrix includes four electrostatic parameters and four parameters of spin–orbit origin. The eigenvalues of the vibronic matrix (i.e., potential energy surface) are invariant under the operations of the molecular symmetry group \(O_{h}^{'}.\)
Similar content being viewed by others
Notes
Designations and symmetry types of normal modes coincides to monograph by Herzberg [5].
REFERENCES
V. M. Volokhov and L. V. Poluyanov, Russ. J. Phys. Chem. B 14, 227 (2020).
V. M. Volokhov and L. V. Poluyanov, Russ. J. Phys. Chem. B 14, 565 (2020).
V. M. Volokhov and L. V. Poluyanov, Russ. J. Phys. Chem. B 15, 205 (2021).
L. V. Poluyanov and V. G. Ushakov, Russ. J. Phys. Chem. B 15, 407 (2021).
G. Herzberg, Molecular Spectra and Molecular Structure. III. Electronic Spectra and Electronic Structure of Polyatomic Molecules (Krieger, Malabar, 1991).
L. V. Poluyanov and W. Domcke, J. Chem. Phys. 137, 114101 (2012).
M. Grinberg, A. Mandelis, and K. Fjeldsted, Phys. Rev. B 48, 5922 (1993).
P. Bunker, Molecular Symmetry and Spectroscopy (Academic, New York, 1979).
L. V. Poluyanov and W. Domcke, Springer Ser. Chem. Phys. 97, 77 (2009).
L. V. Poluyanov and W. Domcke, Adv. Ser. Phys. Chem. 17, 117 (2011).
L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 3: Quantum Mechanics: Non-Relativistic Theory (Nauka, Moscow, 1974; Pergamon, New York, 1977).
E. Wigner, Group Theory: And its Application to the Quantum Mechanics of Atomic Spectra (Elsevier, Amsterdam, 1959).
K. Balasubramanian, Relativistic Effects in Chemistry, Part A: Theory and Techniques (Wiley, New York, 1991).
Funding
This work was carried out in accordance with State Task nos. AAAA-A19-119071190017-7 (L.V. Poluyanov) and AAAA-A19-119120690042-9 (V.M. Volokhov)).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Volokhov, V.M., Poluyanov, L.V. Relativistic Jahn–Teller Effect 2Tg × eg in Octahedral Molecules with a Heavy Central Atom. Russ. J. Phys. Chem. B 16, 827–833 (2022). https://doi.org/10.1134/S1990793122050244
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1990793122050244