Synthesis and proton, nitrogen, phosphorus and tungsten multinuclear magnetic resonance study of bis(dioxybiphenyl)bis(oxypyridine)cyclotriphosphazene and dioxybiphenyl tetrakis(oxypyridine)cyclotriphosphazene and their pentacarbonyl tungsten complexes

1. Carriedo, G.A.
2. García Alonso, F.J.
3. García, J.L.
4. Carbajo, R.J.
5. López Ortiz, F.