ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 24, Number 2
JKCSEZ 24(2)
April 20, 1980 

By using electrostatic model and simple bond additivity scheme a reasonable and simple method was developed for the estimation of standard enthalpy of formation (ΔHf°) of very polar compounds. The bond contributions to the enthalpy of formation for halomethanes were; ΔHf°(C-F) = -36.44 kcal/mole, ΔHf°(C-Cl) = -2.57 kcal/mole, ΔHf°(C-Br) = 5.32 kcal/mole, ΔHf°(C-I) = 19.18 kcal/mole, andΔHf°(C-H) = -3.61 kcal/mole, respectively. Using these values and calculated electrostatic energies, the estimated ΔHf° values were estimated and found to be in good agreement with observed values.