Spin‐tautomery of endohedral Y@C60 complex

Author:

Semenov Sergey G.1,Bedrina Marina E.2ORCID,Andreeva Tatiana A.2ORCID,Titov Anatoly V.12ORCID

Affiliation:

1. Petersburg Nuclear Physics Institute of National Research Center “Kurchatov Institute” Gatchina Russian Federation

2. Saint Petersburg State University St. Petersburg Russian Federation

Abstract

AbstractNew conception of spin‐tautomery was developed based on the results of quantum chemical investigation of the endohedral Y@C60 complex. The embedding energies of yttrium into the fullerene cavity, dipole moments, polarizabilities, and IR spectra in the doublet and quartet spin states were calculated by the density‐functional theory quantum chemical methods. The degeneracy degree of the state of the complex is retained upon doublet–quartet excitation, since a twofold increase in the number of electron spin projections is compensated by a twofold decrease in the number of equivalent potential energy minima. The non‐conservation of spin by an endohedral complex with a heavy atom makes it possible to interpret the interconversion of doublet and quartet states as a non‐degenerate spin‐tautomery.

Publisher

Wiley

Subject

Physical and Theoretical Chemistry,Condensed Matter Physics,Atomic and Molecular Physics, and Optics

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