Complexes of 2,2′,2″‐Nirtilotriphenol. Part IV. Cage Compounds with Phosphorus(III) and Phosphorus(V)

The ligand 2,2′,2″‐nitrilotriphenol reacts with P(III) and P(V) compounds to form corresponding phosphorus complexes. Syntheses and NMR data of 2,2′,2″‐nitrilotriphenyl phosphite ( II ), 2,2′,2″‐nitrilotriphenyl phosphate ( III ) and of a hydrolysis product of II , 2,2′‐[ N ‐(2‐hydroxyphenyl)imino]diphenly phosphonate ( IV ), are reported, as well as crystal structures of II and IV . Phosphite II shows a bicycloundecane framework; no NċPinteraction is present. The phosphonate IV shows two coordinated and one dangling phenol group; the N‐atom does not interact with the P‐atom. Strong acids protonate II as well as III to form cations: in these, NMR evidence indicates coordination of the N‐atom to the P‐atom.