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Complexes of 2,2′,2″‐Nirtilotriphenol. Part IV. Cage Compounds with Phosphorus(III) and Phosphorus(V)
Author(s) -
Müller Edgar,
Bürgi Hans Beat
Publication year - 1987
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19870700418
Subject(s) - chemistry , phosphonate , phosphorus , ligand (biochemistry) , phosphate , hydrolysis , medicinal chemistry , phenol , atom (system on chip) , stereochemistry , crystallography , organic chemistry , biochemistry , receptor , computer science , embedded system
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.