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Ph2PH·BH3 is converted into its K salt with KOSiMe3 in THF, and the anion reacts with (dppp)Pd(Ph)I to produce the complexed secondary phosphine–borane which decomposes to PPh3·BH3 at –10 °C; the C6F5 analogue has been crystallographically characterised.
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Gaumont et al. (1999) studied this question.
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