Heat of Formation and Other Properties of Trinitrofluoromethane.

Abstract

The energy of reaction of liquid trinitrofluoromethane with diethyl oxalate as fuel was determined in a rotating bomb calorimeter. The standard heat of formation, which is -51.99 ± 0.48 kcál. per mole (±0.48 is estimated standard deviation of the mean), at °C. was calculated using a computer program which has been developed for compounds containing C, H, O, N( F, Cl, Br). The effect of temperature on density, vapor pressure, and surface tension of the compound was determined for a given temperature range. The equations relating these properties to the temperature are given. For better characterization, several other properties, such as freezing and boiling point, refractive index, and heat capacity were also measured and are reported.

Enthalpy of formation of bromotrinitromethane

“…For comparison purposes, some properties of the halogen compounds of the trinitromethane series as determined in this laboratory are listed in Table III. "Through oversight densities of trinitrofluoromethane are reported incorrectly in (11). The first digits (.7 and .6) in the density series should read 5 and 4-i.e., 1.595 instead of 1.795; 1.489 instead of 1.689.…”

Heats of formation of 1,1,1-trinitro-4,4-bisdifluoroaminopentane and 2-fluoro-2,2-dinitroethanol by combustion calorimetry

“…per mole and the dissociation energy values reported by Wilkins (10) were used in the calculations. The value for C-F was calculated from the measured heat of formation of fluorotrinitromethane (12) assuming that the C-F bond in the two molecules, fluorotrinitromethane and FDE, are the same. The calculated heat of formation of TDP is -59.37 kcal.…”

“…The average deviations from the mean in these measurements were 0.044 and 0.095% for TDP and FDE, respectively. The procedure was essentially the same as that reported previously (12).…”