Recommended name for @C00807@ having the structure RP: (former IUPAC name is phosphinediyls). A common non-IUPAC synonym is phosphinidenes.
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1357 [Terms] [Paper]