degrees of cistacticity and transtacticity

https://doi.org/10.1351/goldbook.D01571
For a @R05249@ containing double bonds in the main chain of the @C01286@ these are the fractions of such double bonds that are in the cis and @C01092@ configurations, respectively.
Source:
Purple Book, 1st ed., p. 46 [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