Transient phosphenium and arsenium ions, generated by fluoride abstraction from bis(m‐terphenyl)fluoropnictogens, underwent intramolecular electrophilic attack prior to methyl group migration and gave rise to isolable 9‐phospha‐ and 9‐arsena‐fluorenium ions.
Transiente, aus Bis(m‐terphenyl)fluorpniktogenen durch Fluorid‐Abstraktion gebildete Phosphenium‐ und Arsenium‐Ionen vollzogen einen intramolekularen elektrophilen Angriff, gefolgt von einer Methylgruppenwanderung und bildeten isolierbare 9‐Phospha‐ und 9‐Arsena‐Fluorenium‐Ionen.
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