Other Reactions of Cyclophosphazenes

Other Reactions of Cyclophosphazenes A. Complexes, Salts, and Adducts 

The skeletal nitrogen atoms in cyclophosphazenes possess a lone pair of electrons and, hence, they have long been viewed as potential donor sites to bind a proton or to form complexes with electron-acceptor molecules. The possibility of formation of anion-cation complexes by release of a halogen ion to a Lewis acid and charge-transfer complexes has also been studied. In addition, some cyclopho-sphazene derivatives form crystalline inclusion clathrates with a variety of guest molecules. Allcock (21, 22) has reviewed these aspects in detail. 

Complexes of N6P6(NMe2)12 with other metal chlorides and nitrates have essentially similar structures as indicated by infrared and electronic spectroscopic data (98). Compounds N4P4Me8 and N5P5Me10(L ) react with molybdenum and tungsten hexacarbonyls 

There are also other reports of metal complexes of cyclophosphazene derivatives, but in most cases the structures of the complexes have not been established with certainty (21, 150, 229, 231, 357, 386). 

There are many reactions of cyclophosphazene derivatives involving substitution or transformations at side chains that do not affect the 

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