ABSTRACT

Four lanthanide complexes with a general formula [Ln(3,5-Dipr-2-OHBA)3(phen)]2 (Ln = La(1), Nd(2), Eu(3) and Tb(4); 3,5-Dipr-2-OHBA = 3,5-diisopropylsalicylate; phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, infrared spectra (IR), powder X-ray diffraction (XRD) and thermogravimetry, differential scanning calorimetry techniques with Fourier transform infrared (TG/DSC FTIR) technology. The luminescent properties of the complexes 3 and 4 were studied. The thermal decomposition processes of the title compounds were studied using the TG/DSC FTIR coupling techniques. Heat capacities of the complexes were measured by DSC. And the values of the experimental heat capacities were fitted to a polynomial equation with the least-squares method. Based on the fitted polynomial and thermodynamic equations, the smoothed heat capacities and thermodynamic functions (HT - H298.15 K), (ST - S298.15 K), and (GT - G298.15 K) were calculated.

Compounds

#	Formula	Name
1	C102H118La2N4O18	lanthanum 3,5-diisopropylsalicylate, complex with 1,10-phenanthroline
2	C102H118N4Nd2O18	neodymium 3,5-diisopropylsalicylate, complex with 1,10-phenanthroline
3	C102H118Eu2N4O18	europium 3,5-diisopropylsalicylate, complex with 1,10-phenanthroline
4	C102H118N4O18Tb2	terbium 3,5-diisopropylsalicylate, complex with 1,10-phenanthroline

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	55
POMD	2	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	55
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	55
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	55

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Synthesis, characterization and thermochemical properties of four new lanthanide complexes with 3,5-diisopropylsalicylic acid and 1,10-phenanthroline

Zheng, J.-R.[Jun-Ru], Ren, N.[Ning], Zhang, J.-J.[Jian-Jun], Zhang, D.-H.[Da-Hai], Yan, L.-Z.[Li-Zhen], Wu, K.-Z.[Ke-Zhong]

ABSTRACT