Spectral and thermal studies of some malonate complexes. A new synthetic route leading to spinel-type oxides

Authors
Mindru, I Patron, L Carp, O Marinescu, G Brezeanu, M Segal, E
Citation
I. Mindru et al., Spectral and thermal studies of some malonate complexes. A new synthetic route leading to spinel-type oxides, REV RO CHIM, 45(7-8), 2000, pp. 601-608
Citations number
21
Categorie Soggetti
Chemistry
Journal title
REVUE ROUMAINE DE CHIMIE
ISSN journal
00353930 → ACNP
Volume
45
Issue
7-8
Year of publication
2000
Pages
601 - 608
Database
ISI
SICI code
0035-3930(200007/08)45:7-8<601:SATSOS>2.0.ZU;2-2
Abstract
The [Co(C3O4H2)(H2O)(2.5)](2), [Co(C3O4H2)(H2O)](2), {NH4[Fe(C3O4H2)(2)(H2O )]}(2) and (NH4)(2)[Fe2Co(C3O4H2)(2)(OH)(6)(H2O)(2)] coordination compounds were synthesized and characterized by chemical analysis, vibrational and e lectronic spectra and thermal analysis. For the [Co(C3O4H2)(H2O)(2.5)](2) c ompound a thermocromic phenomenon was identified. The Values of the non-iso thermal kinetic parameters for the dehydration step were determined. The fi nal products resulted from the thermal decomposition of the coordination co mpounds are spinel oxides: CO3O4, Fe(3)Q(4)/gamma Fe2O3 and CoFe2O4, respec tivelly.