A new Mn (III) Schiff-base coordination compound, [Mn(L)(NCS)](2) (H2L = N,N'-bis(5-chlorosalicylidene)1,2-diaminoethane), has been synthesized and characterized structurally and magnetically. The target compound is a phenoxo-bridged dimeric compound with the isothiocyanate coordinating in a usual bent mode. A magnetic susceptibility study reveals that the target compound exhibits antiferromagnetic intra-dimer coupling between Mn (III) ions. The low temperature heat capacity of the compound over the temperature range (2 to 300) K has been measured using the heat capacity option of a Quantum Design Physical Property Measurement System (PPMS). The thermodynamic functions in the experimental temperature range have been determined by curve fitting. The standard entropy and enthalpy of the as-prepared compound at T = 298.15 K have been calculated to be (924.52 +/- 10.17) J . K-1 . mol(-1) and (133.47 +/- 1.47) kJ . mol(-1), respectively. (C) 2014 Elsevier Ltd. All rights reserved.