Photoisomerization of sterically hindere
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Hermann Rau; Shen Yu-Quan
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Article
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1988
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Elsevier Science
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English
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The photoisomerization yields of a homologous series of o,o,o',o'substituted azobenzenes have been determined by excitation of the low lying l(n,~\*) and the higher lying I(~F,~F\*) states. For more severe steric hindrance, i.e. with substituents more bulky than methyl, the E + 2 quantum yields are