PHOSPHORANE POLYMERS. PART I.
Rept. for Apr 63-Apr 64,
AMERICAN POTASH AND CHEMICAL CORP WHITTIER CA
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Initial preparations of polyphosphorane polymers based on phenylphosphonyl diazide and several bis-tertiary phosphines were carried out. The thermal stability of the polymer based upon an aromatic linked bis-tertiary phosphine was found to be considerably higher than that of the corresponding methylene-linked polymers approximate beginning of decomposition at 477 C. and 278 C., respectively. In addition, a series of mono-and bisphosphon-, sulfon-, and silylimidophosphorane polymer prototypes has been prepared. Thermal and hydrolytic properties of these materials have been investigated. Bis-phosphoranes based upon p-phenylene and 4,4-biphenylene bistertiary phosphines were found to have the highest approximate beginnings of decomposition by differential thermal analysis of approximately 465 C. and 460-475 C. Various functionally substituted phosphoranes were also prepared in order to investigate potential methods for the cross-linking of phosphorane chains as well as to investigate methods for the synthesis of desired intermediates. Author