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Primary and secondary phosphines (RPH2, R2PH; R = Aryl) react with the P4-Schwesinger Base 4 under formation of alkalimetalfree phosphides. 31P-NMR-investigations prove the existence of phosphine/phosphide equilibriums in the reaction solutions. The interaction of other Schwesinger Bases with alkyl-and arylphosphines is also described.
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