SYNTHESIS OF CO(II) AND CO(II)-MN(II) FERRITES FROM POLYNUCLEAR OXALATES

Authors
MINDRU I PATRON L CRISAN D BREZEANU M
Citation
I. Mindru et al., SYNTHESIS OF CO(II) AND CO(II)-MN(II) FERRITES FROM POLYNUCLEAR OXALATES, Revue Roumaine de Chimie, 42(1), 1997, pp. 31-35
Citations number
17
Categorie Soggetti
Chemistry
Journal title
Revue Roumaine de Chimie → ACNP
ISSN journal
00353930
Volume
42
Issue
1
Year of publication
1997
Pages
31 - 35
Database
ISI
SICI code
0035-3930(1997)42:1<31:SOCACF>2.0.ZU;2-7
Abstract
The present paper reports polynuclear coordination compounds isolated from the systems 2Fe (III) : M (II): C2O42- and 2Fe (III) : (0.5M (II) , 0.5M (II)) : C2O42- as precursors for Co (II) and Co (II) - Mn (II) ferrites. To determine the nature of the species formed and to establi sh the stability range of complex species, two pH ranges were selected : 5-7 and 10-12; three Mn-: mC(2)O(4)(2-) ratios that are 1 : 2, 1 : 4, 1 : 10 and two precipitating agents (NH4OH 12.5% and KOH 40%) were utilised.