![]() ![]() ![]() Robert Burns Woodward Louis Frederick FieserĮach type of diene or triene system is having a certain fixed value at which absorption takes place this constitutes the Base value or Parent value. It is used to calculate the position and λ max for a given structure by relating the position and degree of substitution of chromophore. In 1959 Louis Frederick Fieser modified these rules with more experimental data, and the modified rule is known as Woodward-Fieser Rules. In 1945 Robert Burns Woodward gave certain rules for correlating λ max with molecular structure. To calculate the maximum wave length of organic compounds.To familiarize the Woodward-Fieser Rules.
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