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Second Order Jahn‐Teller Effect in Hexahalogenotellurates( IV ): Statically Distorted Anion in Ca(H 2 O,HF) 7 TeBr 6
Author(s) -
Abriel Walter,
Ehrhardt Hartmut
Publication year - 1984
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198409631
Subject(s) - jahn–teller effect , ion , crystallography , symmetry (geometry) , crystal structure , order (exchange) , chemistry , position (finance) , field (mathematics) , condensed matter physics , physics , mathematics , quantum mechanics , geometry , pure mathematics , finance , economics
The transition from the dynamic to the static distorted structure (point symmetry O h and C 2v , respectively) could be detected for the first time in structural investigations on the TeBr 6 2⊖ ion. In the title compound, which is characterized by a strongly polarizing cation, the static distorted structure could be stabilized by reduced symmetry of the crystal field. This means that the privileged position assigned to the AX 6 E system according to Gillespie's VEPA theory is also refuted.