Reference

Structure and reactivity of nitriles

Heat of combustion and hear of formation of substituted phenylacetonitriles.In this article, certain chemicals are used. One of their cas registry numbers is 5558-32-7 Ciocazanu, Ion; Zavianu, Dinu (Fac. Chimie, Univ. Bucuresti, Bucharest, Rom.). Rev. Chim. (Bucharest), 45(10), 876-8 (Romanian) 1994. CODEN: RCBUAU. ISSN: 0034-7752. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Thermodn. parameters (heat of combustion and heat of formation) were detd. for the title compds. at 298.15 K. A lower value of heat of formation was obsd. with the substance contg. strong bonding, hence greater stability. A higher mol. stability for a-n-propyl- than that for a-ethylphenylacetonitrile was obsd. due to vol. steric effect. This effect of mass or vol. was seen with a-Bu and a-n-amyl, the values for heat of formation being continuously lower. Cyclopropyl and cyclohexyl substituents showed higher values of heat of formation compared to to acyclic substituents. Thus, steric effects influence mol. stability of nitriles. .