Verzerrte Ordnung: [Cs(THF)4]C60‐Einkristalle wurden erhalten und röntgenkristallographisch untersucht. Eine Jahn‐Teller‐Verzerrung im anionischen C60‐Radikal konnte nachgewiesen werden. Erstmals wurde der Übergang vom statischen zum dynamischen Jahn‐Teller‐Effekt in Fulleriden direkt röntgenanalytisch beobachtet und durch magnetische Untersuchungen und EPR‐Experimente bestätigt.
Distorted order: The synthesis and X‐ray crystallographic analysis of single crystals of [Cs(THF)4]C60 are reported. The data obtained provide structural information sufficient to prove a Jahn–Teller distortion in the C60 anion radical. For the first time the transition from static to dynamic Jahn–Teller effects in fullerides has been observed directly by X‐ray analysis and corroborated by magnetic measurements and EPR experiments.
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