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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.51A [2012] >
IJC-A Vol.51A(05) [May 2012] >
| Title: | Hydrothermal synthesis and characterization of lanthanide oxalates: In situ oxalate formation from tartaric acid in presence of KI |
| Authors: | Athar, Muhammad
Qureshi, Ashfaq Mahmood
Li, Guanghua
Shi, Zhan
Feng, Shouhua |
| Keywords: | Hydrothermal synthesis
Lanthanides
Oxalates
Degradation
Tartaric acid
Potassium iodide |
| Issue Date: | May-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Two new
three-dimensional lanthanide oxalates [Pr2(C2O4)3(H2O)4]·2H2O
(1) and [Nd2(C2O4)3(H2O)4]·2H2O
(2) and a two-dimensional oxalate
[Pr2(C2O4)3(H2O)6]·3H2O
(3) have been prepared by
hydrothermal process and characterized by single crystal X-ray analysis.
Compound (1) crystallizes in
monoclinic crystal system with P21/c
space group whereas (2) crystallizes
in triclinic crystal system with Pī
space group. Although Pr and Nd are twin lanthanides, they have produced
different crystal structures under the same reaction conditions. Compound (3) is produced by the in situ
hydrothermal degradation of tartaric acid to oxalate ions in presence of KI.
In this reaction, the iodide anion instead of metal cation, acts as the
reducing agent during the degradation of tartaric acid to oxalate.
Thermogravimetric, elemental analysis and IR studies have also been carried out
for these compounds. |
| Page(s): | 708-713 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.51A(05) [May 2012]
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