The saturated hydrides of tervalent phosphorus having the general
formula PnHn+2. Individual members having an unbranched phosphorus chain are named phosphane, diphosphane, triphosphane, etc. The name of a saturated
hydride of phosphorus wherein one or more phosphorus atoms have a bonding number of 5 is formed by prefixing locants and
![[lambda]](/img5/b_files/LAMBDA.gif)
5 symbols to the name of the corresponding phosphane. CNOC, Treatment of variable
valence in organic nomenclature (lambda convention), PAC 56, 769-778 (1984) Rule Lm-1. GNOC Recom. R-2.1, R-2.2. Hydrocarbyl derivatives of PH3 belong to the
class phosphines.
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