The heat capacity of tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato)zirconium (Zr(C11H19O2)(4)) was measured over the temperature range (9-306) K by adiabatic-shield calorimetry and found to be without transitions or thermal anomalies. The data obtained were used to calculate its thermodynamic functions (entropy, enthalpy, reduced Gibbs energy) in the range (0-306) K. They have the following values at 298.15 K: C-p(o) = (1195.7 +/- 1.8) J.K-1 .mol(-1), Delta S-298.15(0)m(o) = (1298 +/- 3) J.K-1.mol(-1), Delta(298.15)(0) H-m(o) (194.7 +/- 0.3) KJ.mor(-1,) Phi(o)(m) = (645.2 +/- 1.9) J.K-1.mol(-1). The value of the absolute entropy were used to calculate the entropy of formation of Zr(C11H19O2)(4) at T = 298.15 K. (C) 2017 Elsevier Ltd.