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Correlation of zero‐field splittings and site distortions I. MnCl 4 2− in approximately trigonal symmetry
Author(s) -
Sachs H.,
Lehmann G.
Publication year - 1979
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.2220920209
Subject(s) - electron paramagnetic resonance , distortion (music) , symmetry (geometry) , ethylene diamine , bond length , chemistry , ion , trigonal crystal system , crystallography , zero field splitting , zero (linguistics) , field (mathematics) , molecular physics , condensed matter physics , physics , nuclear magnetic resonance , geometry , crystal structure , mathematics , quantum mechanics , electron , organic chemistry , nuclear chemistry , amplifier , optoelectronics , cmos , philosophy , linguistics , pure mathematics , spin polarization
EPR parameters for Mn 2+ in single crystals of (CH 3 NH 2 ) 2 ZnCl 4 and (enH 2 ) 2 ZnCl 6 (en = ethylene diamine) are reported. The axial splitting parameter B 2 0for these and two other systems from the literature are approximately proportional to the size of the trigonal site distortion. The rhombic parameter B 2 2also correlates well with the amount of deviation from true C 3 symmetry. For large distortions the z ‐axes of the EPR parameters are close to the direction of the longest ZnCl bond. Thus the distortion of the first coordination sphere of the paramagnetic ion appears to determine the size of the second order fine structure parameters if the bond lengths differ by at least 1 pm.