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Year 2007, Month 10 (Section Full Articles, Page 1986)

Manifestation of electron-nuclear dynamics in ⁵⁹Co NQR spectra of a series of cobaltocenium derivatives

G. K. Semin, E. V. Bryukhova, and S. I. Kuznetsov

A coupling equation relating the quadrupole coupling constant (e²Qq_zz) to the asymmetry parameter (η) of the electric field gradient for a series of cobaltocenium derivatives (⁵⁹Co NQR) is derived. The estimates of the correlation times of "slow" modulations of electron motions by tunneling processes lie in the range from 10^–12 to 10^–14 s. This corresponds to the interval of the characteristic times of nuclear motions.

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