Dichloro-Cycloazatriphosphane: The Missing Link between N P and P Ring Systems in the Systematic Development of NP Chemistry.

A dichloro-cycloazatriphosphane that incorporates a cyclic NP backbone could be synthesized using knowledge gained from the chemistry of N P and P ring systems. It fills the gap between the congeneric compounds [ClP(μ-NR)] and [ClP(μ-PR)] (R=sterically demanding substituent), and thus contributes to the systematic development of nitrogen-phosphorus chemistry in general. The title compound was studied with respect to its formation via a labile aminodiphosphene, which readily underwent different rearrangement reactions depending on the solvent. All compounds were fully characterized by experimental and computational methods.