Thermochemical properties of rare earth complexes with salicylic acid

Fourteen rare earth complexes with salicylic acid RE(HSal)3·nH2O (HSal = C7H5O3; RE = La–Sm, n = 2; RE = Eu–Lu, n = 1) were synthesized and characterized by elemental analysis, and their thermal decomposition mechanism were studied with TG–DTG technology. The constant-volume combustion energies of complexes, ΔcU, were determined by a precise rotating-bomb calorimeter at 298.15 K. Their standard molar enthalpies of combustion, ΔcHm∘, and standard molar enthalpies of formation, ΔfHm°, were calculated.