Synthese und Struktur von pentakoordinierten spirocyclischen Derivaten des Phosphors und Arsens

Abstract

Synthesis and Structure of Pentacoordinated Spirocyclic Derivatives of Phosphorus and Arsenic Phosphorus ( 2a , b ) and arsenic 4 containing spirocyclic compounds have been synthesised from substituted ureas and halides of phosphorus and arsenic. On the basis of an X‐ray analysis of 2b it is demonstrated that λ 5 ‐P compounds and not phosphonium salts were obtained.