Standard energies of combustion and standard enthalpies of formation for the complexes RE (Et_2dtc)_3(phen) (RE = Ho, Er, Tm, Yb, Lu)

摘要

The treatment of RECl_3·xH_2O (RE = Ho, Er, Tm, Yb, Lu; x = 3-4) with sodium diethyldithiocarbamate (NaEt_2dtc·3H_2O) and 1,10-phenanthroline hydrate (o-phen·H_2O) in absolute ethanol yielded five ternary solid complexes RE(Et_2dtc)_3(phen). IR spectra of the complexes showed that RE~(3+) coordinated to two sulfur atoms in NaEt_2dtc and two nitrogen atoms in o-phen. The constant-volume energies of combustion of the complexes have been determined by a precise rotating-bomb calorimeter at 298.15 K. The standard enthalpies of combustion and standard enthalpies of formation were calculated.