Iodine oxidation of the isoelectronic anions [N(PPh2)2]– and [HC(PPh2)2]– affords the structurally characterized P–P coupling product Ph2P–N![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
PPh2–PPh2N–PPh2 and the P–C coupling product (Ph2P)2CPPh2–CH2–PPh2, respectively; the P–P heterocoupling product Ph2P–NPPh2–PPh2CH–PPh2 is obtained in the cross-coupling experiment of Li[N(PPh2)2] and Li[HC(PPh2)2] with iodine at –40 °C.
P. Braunstein, R. Hasselbring, A. Tiripicchio and F. Ugozzoli, J. Chem. Soc., Chem. Commun., 1995, 37 DOI: 10.1039/C39950000037
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