Heats of combustion correlate directly with ring strain and stability in cyclic hydrocarbons
Chemical thermodynamics demonstrates that the excess heat of combustion in cyclic hydrocarbons directly reflects their ring strain, which in turn determines molecular stability.
The retrieved literature consistently supports the fundamental chemical principle that ring strain significantly impacts the enthalpy (heat of combustion) and overall stability of cyclic hydrocarbons. Papers 1, 2, and 9 specifically address ring strain energies, molecular stability, and energetic balances in cyclic systems. No papers contradict this relationship.
T. Unimuke, H. Louis, E. Eno, E. Agwamba, A. Adeyinka. Meta-Hybrid Density Functional Theory Prediction of the Reactivity, Stability, and IGM of Azepane, Oxepane, Thiepane, and Halogenated Cycloheptane. 2022. https://doi.org/10.1021/acsomega.1c07361
Paper 1 affirms that ring strain is a major determinant in the energy balance and stability of cyclic molecules.
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Hongbo Hua, K. Das, Hongzhuan Wang. On atom-bond connectivity index of graphs. 2019. https://doi.org/10.1016/J.JMAA.2019.06.069
Paper 2 notes that topological indices like the ABC-index are useful in studying the stability of alkanes and the strain energy of cycloalkanes.
Rey Planells A, Espinosa Ferao A. Accurate Ring Strain Energies of Unsaturated Three-Membered Heterocycles with One Group 13-16 Element.. 2022. https://doi.org/10.1021/acs.inorgchem.2c00067
Paper 9 examines ring strain energy and its relationship with stability across various unsaturated heterocycles.
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