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Electron Paramagnetic Resonance Study of Cu 2+ in K 2 Zn(ZrF 6 ) 2 · 6 H 2 O
Author(s) -
Petrashen V. E.,
Yablokov Yu. V.,
Davidovich R. L.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220880208
Subject(s) - electron paramagnetic resonance , jahn–teller effect , ion , crystallography , spectral line , atmospheric temperature range , chemistry , resonance (particle physics) , field (mathematics) , symmetry (geometry) , materials science , analytical chemistry (journal) , nuclear magnetic resonance , atomic physics , physics , thermodynamics , geometry , mathematics , organic chemistry , astronomy , pure mathematics , chromatography
An EPR study of Cu 2+ ions in K 2 Zn(ZrF 6 ) · 6 H 2 O in the temperature range 4.2 to 300 K at X and Q bands is carried out on single crystals and powders. The presence of the two conjugated Cu(H 2 O) 6 2+ complexes is discovered and the angles between respective axes of the rhombic crystalline field are determined. The temperature dependence of the Cu 2+ EPR spectrum tensor parameters is discussed in terms of dynamic Jahn‐Teller effect. The additional arguments in favour of the dynamic nature of the observed phenomena are given and the values of the energy splittings between three possible Jahn‐Teller configurations δ 1,2 ≈ 280 cm −1 , δ 1,3 ⪆ 1000 cm −1 are obtained. The necessity of the “dynamic” approach to the study of “static” Jahn‐Teller EPR spectra of Cu(H 2 O) 6 2+ complexes in similar low‐symmetry crystals is shown.