MONOSPIROARYLOXYPHOSPHAZENES - P-FLUOROPHENOXY DERIVATIVES CONTAININGTHE 1,2-PHENYLENEDIOXY AND 2,3-NAPHTHALENEDIOXY GROUPS

The reactions of p-FC(6)H(4)OSiMe(3) with N(3)P(3)F(4)X [where X is ei ther 1,2-O2C6H4 or 2,3-O2C10H6] provide a convenient route to fully su bstituted phosphazenes, N(3)p(3)(p-FC6H4O)(4)X. The X-ray structures o f the monospiro phosphazene derivatives of 1,2-benzenediol (1,2-phenyl enedioxy)-1,3,5,2,4,6-cyclophosphazene, (1), C30H20F4N3O6P3] and 2,3-n aphthalenediol 2-naphthalenedioxy)-1,-3,5,2,4,6-cyclophosphazene, (2), C(34)h(22)F(4)N(3)O(6)P(3)] contain an almost planar N3P3 core which lies perpendicular to the planar five-membered spiro group. The F atom s of the phenoxy groups are involved in the formation of weak intermol ecular hydrogen bonds giving rise to dimeric networks in (1) and three -dimensional networks in (2).