lambda

https://doi.org/10.1351/goldbook.L03418
Signifies, with its superscript, the @B00703@, i.e. the sum of the number of skeletal bonds to an atom and the number of hydrogen atoms associated with it in a @P04405@, real or hypothetical. Its usage in names of compounds is generally restricted to non-standard @V06588@ states.
Source:
PAC, 1984, 56, 769. (Treatment of variable valence in organic nomenclature (lambda convention) (Recommendations 1983)) on page 774 [Terms] [Paper]
See also:
Blue Book, p. 465 [Terms] [Book]
Red Book, 3rd ed., p. 245 [Terms] [Book]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014