NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.49A [2010] >
IJC-A Vol.49A(02) [February 2010] >

Title: Synthesis, characterization and ferromagnetic behavior of [CoIII(en)2(RC6H4NH2)I]I2.H2O complexes
Authors: Anbalagan, K
Ganeshraja, A S
Kandasamy, S
Keywords: Coordination chemistry
Aryl amines
Issue Date: Feb-2010
Publisher: CSIR
IPC CodeInt. Cl.9 C07F15/06
Abstract: Mixed ligand cobalt(III) complexes containing aryl amine (RC6H4NH2) ligand have been synthesized using a modified route developed in this study. A wide range of complexes, [CoIII(en)2(L)I]I2.H2O, (where L = RC6H4NH2; R = m-OMe, p-F, H, m-Me, p-Me, p-OEt and p-OMe) show promising reactivities and physical properties due to the presence of electron donor/acceptor groups in the aryl ligand. The complexes have been characterized by elemental analysis, FT-IR, UV-vis and powder X-ray diffraction patterns. FT-IR ν(M-X) and UV-vis spectral data are compatible with trans-form of the complexes. Magnetic studies yield magnetic remanence Mr = 7.071 ´ 10-3 – 3.069 ´ 10-5 emu/g and intrinsic coercivity, -Hci = 141-1156 Oe. Linear regression plot of Mr versus σ yields negative slope, implying that electron withdrawing group in RC6H4NH2 (σ > 0) enhances ferromagnetic character while the electron donating groups (σ < 0) reduce ferromagnetism. The study provides evidence that substitution at the aryl ligand, remote from the Co(III) center, effectively displays and imparts characteristic ferromagnetic properties. Cobalt(III) complexes containing RC6H4NH2 ligand illustrate a simple molecular fabrication technique, which can be suitably integrated into a system, to have some control on the behavior of metal complexes. A modified ferromagnetic character due to charge build up on the metal centre by ligating nitrogen atom, which in turn makes the molecule into a centre of systematic variation in magnetization, has been observed.
Page(s): 171-175
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.49A(02) [February 2010]

Files in This Item:

File Description SizeFormat
IJCA 49A(2) 171-175.pdf94.49 kBAdobe PDFView/Open
 Current Page Visits: 1173 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 164466 since 01-Sep-2015  Last updated on 21-Jun-2016Webmaster: