The molar heat capacity, C p (T ), of CrCl 2 (pym) was measured from 2-60 K. We found a peak in C p (T ) occurred at 20.0(3) K (Fig. ), consistent with the magnetic phase transition observed in the magnetic susceptibility data (Fig. ). We obtained an estimate of the entropy of magnetic ordering by integrating C P /T (T ) after subtraction of a linear background (10 -15 K and 27 -30 K)(Fig. ), to account for phononic contributions. We found that the measured value of magnetic entropy (S exp. = 12.7(4) Jmol -1 K -1 ) is slightly reduced from the expected value (S calc. = 13.4 Jmol -1 K -1 ). The small features present in the data between 30-40 K are due to instrumental error.