15813-18-0Relevant academic research and scientific papers
Substituent Effects on the C-C Bond Strength, 6. Tetracyclopropylsuccinonitrile
Bernloehr, Werner,Beckhaus, Hans-Dieter,Ruechardt, Christoph
, p. 1026 - 1033 (2007/10/02)
The heat of formation of the title compound 5 was obtained from the heat of combustion and the heat of sublimation.The activation parameters for the thermal decomposition of 5 were measured by reaction kinetics.A resonance energy of 7.8 kcal*mol-1 is obtained for the α-cyanodicyclopropylcarbinyl radical from the known relationship between strain enthalpy and free enthalpy of activation.Due to dicyclopropylcarbinyl stabilisation this value is 2.5 kcal*mol-1 higher than expected for a simple α-cyanoalkyl radical.Structural data for 5 were obtained from force field calculations (MM2).
