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"A" value definition

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The conformational preference of an equatorial compared to an axial substituent in a monosubstituted cyclohexane. This steric substituent parameter equals rGo in kcal/mol for the equatorial to axial equilibration on cyclohexane. The values are also known as "Winstein-Holness" A values. HIRSCH (1967); CAREY and SUNDBERG (19

See also:

acceptable quality level (AQL) definition
abscissa definition
acceptor number (AN) definition
Abzyme definition
access time definition