Chemische Berichte

Thermische Stabilität von 9, 9′??Bixanthen und 9, 9′, 10, 10′??Tetrahydro??10, 10, 10′, 10′??tetramethyl??9, 9′??bianthracen Stabilisierungsenergie planarer …

C Herberg, HD Beckhaus, C Rüchardt

Index: Herberg, Clemens; Beckhaus, Hans-Dieter; Ruechardt, Christoph Chemische Berichte, 1994 , vol. 127, # 10 p. 2065 - 2072

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Citation Number: 8

Abstract

The thermal cleavage of the central CC bonds in the title ASDiss, as expected. The radical stabilisation enthalpies RSE compounds was investigated. The activation parameters obtained from these data (RSE:? a= 17.9 k 1.3;? b= 15.6 t were obtained from kinetics and the equilibrium enthalpies 1.4 kcal/mol) correspond closely to twice the RSE of a-phenyand entropies from the temperature dependence of the equi-lethyl radicals (8.0 k 1.5 kcal/mol) ...

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