phosphoranyl radicals

https://doi.org/10.1351/goldbook.P04568
A tetracoordinate phosphorus species which has nine valence-shell electrons R4P·.
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1359 (https://doi.org/10.1351/pac199567081307)