NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(08) [August 2007] >


Title: Magnetic and spectral studies on cobalt(II) chelates of a dithiocarbazate derived from isoniazid
Authors: Kalia, S B
Lumba, K
Kaushal, G
Sharma, M
Issue Date: Aug-2007
Publisher: CSIR
IPC CodeInt. Cl. ⁸ C07F15/06
Abstract: New cobalt(II) dithiocarbazates with different mononegative and dinegative counter anions, of the general formulae [Co(IN-DtczH)₂]Xո (IN-DtczH = isonicotinoyldithiocarbazic acid; X = Cl, Br, NO₃, ClO₄, CH₃COO for n = 2 and X = SO4 and C₂O₄ for n = 1) for Zwitterionic complexes and [Co(IN-Dtcz)₂] for a normal complex, have been obtained. These complexes have been investigated by elemental analyses, room-temperature infrared and electronic spectral and magnetic susceptibility measurements. Five of the complexes have also been investigated for variable temperature magnetic susceptibility measurements. The complexes, [Co(IN-DtczH)₂]Xո (X = Cl, Br, NO₃, ClO₄, CH₃COO for n = 2; X = SO₄ for n = 1) and [Co(IN-Dtcz)₂] have NS linkage while the [Co(IN-DtczH)₂]C₂O₄ complex has ONS bonded ligand. The magnetic and spectral studies suggest that [Co(IN-DtczH)₂](NO₃)₂ is tetrahedral; [Co(IN-DtczH)₂]X₂ (X = Br, ClO₄) and [Co(IN-Dtcz)₂] are square planar; and, [Co(IN-DtczH)₂]X₂ (X = CH₃COO, Cl) involves square planar-tetrahedral equilibrium. The [Co(IN-DtczH)₂]X (X = SO₄, C₂O₄) complexes have octahedral geometry with sulphato or oxalato bridged polymeric structure with appreciable superexchange antiferromagnetic interactions. The mononegative ions, i.e. nitrate, perchlorate and acetate are acting as counter anions.
Page(s): 1233-1239
ISSN: 0376-4710
Source:IJC-A Vol.46A(08) [August 2007]

Files in This Item:

File Description SizeFormat
IJCA 46A(8) 1233-1239.pdf158.43 kBAdobe PDFView/Open
 Current Page Visits: 808 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  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 © 2012 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: 624327 since 06-Feb-2009  Last updated on 13-Nov-2014Webmaster: nopr@niscair.res.in