|
|
|
| |
World's one of the largest Research
Career Network |
|
|
|
Benefits |
- Academic & Industry jobs
- Project funding
- Visiting faculty positions
- Visiting scientist positions
- Invited talks
- and more...
|
|
|
|
|
|
|
|
Register FREE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Global Journal of Physical Chemistry. Volume 2, Issue 3 (2011) pp. 294-301
|
|
|
Research Article
|
|
|
|
|
|
|
Determination of standard molar enthalpies of formation of complexes involving rare earth chloride with glycine
|
|
|
|
Wenjie Zhao a, Fei Liu
b, Lijun Wang b, Fushan Yu b, Lingling Zhang
b, Xuwu Yang b,*
|
|
|
|
|
|
|
|
a Department of Biochemical Engineering, Xianyang Vocational Technical College, Xianyang, 712000, P. R. China
b Key Laboratory of Synthetic
and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key
Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an, 710069, P. R.
China
|
|
|
|
|
|
|
|
Abstract |
|
|
|
The constant-volume combustion energies, ΔcU, have been determined for 15 solid complexes of rare earth chloride with glycine by a precise rotating-bomb calorimeter. The standard molar enthalpies of combustion, ΔcHmΘ and standard molar enthalpies of formation, Δf HmΘ, at T = 298.15 K have been calculated for these complexes. The relationship of Δf HmΘ with the atomic numbers of the elements in the lanthanide series has been examined. The results show that a certain amount of covalence is present in the chemical bond between the rare earth and glycine. Furthermore, corresponding Δf HmΘ of Pm(Gly)3 Cl3 ·3H2O was estimated as -2698 kJ·mol -1.
|
|
|
|
|
|
|
Keywords |
|
|
|
Glycine; rare earth chloride; solid complexes; standard molar enthalpy of formation; precise rotating-bomb calorimeter
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|