Thermodynamic properties of organic compounds

The thermodynamic properties of organic compounds are compiled in a single table giving, for each compound, its gross formula, name, state, standard enthalpy of formation, standard entropy and heat capacity, all tabulated at 25 ˚C. In this table, we have chosen to favor the number of compounds presented at the expense of redundant data that can be calculated, if need be, from the elements listed alone. For example, we have not included enthalpies of combustion or standard free enthalpies of formation, but we explain how to calculate them simply from the tabulated values. On the other hand, we have introduced values for the mineral compounds most frequently encountered in organic reactions. There are around thirty of these compounds, which, at the cost of making the table 2% heavier, has the advantage of making it self-sufficient. In addition to this effort to avoid redundancy, we had to make choices, as it was not possible to introduce all the values available to us. Firstly, with very few exceptions, we avoided compounds for which we were missing one or two data. Then, sometimes subjectively, we eliminated compounds for which the data seemed aberrant. Where both calculated and experimental data were available, we gave preference to the latter, except where they deviated too much from the calculated data, in which case we felt that the calculated results were more realistic. Indeed, the monotonic evolution of properties along a series can provide a valuable indication of the credibility of certain quantities. Below, we briefly present the table and give a few examples of how it can be used: calculating an enthalpy of combustion, a free enthalpy of reaction, an equilibrium constant. A more detailed presentation can be found at [K 610] .