Spectral and thermal studies of new Co(II) and Ni(II) hexaaza and octaaza macrocyclic complexes

The macrocyclic complexes of Co(II) and Ni(II) having chloride or thiocyanate ions in the axial position have been synthesized and characterized. These complexes are synthesised by the template condensation of o -phenylenediamine or 2,3-butanedionedihydrazone with the appropriate aldehydes in NH 4 O...

Full description

Saved in:
Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2008-03, Vol.91 (3), p.957-962
Main Authors: Gaber, M., Rehab, A. F., Badr-Eldeen, D. F.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Coordination compounds
Exact sciences and technology
Inorganic Chemistry
Inorganic chemistry and origins of life
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
Preparations and properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The macrocyclic complexes of Co(II) and Ni(II) having chloride or thiocyanate ions in the axial position have been synthesized and characterized. These complexes are synthesised by the template condensation of o -phenylenediamine or 2,3-butanedionedihydrazone with the appropriate aldehydes in NH 4 OH solution in the presence of the metal ions, Co(II) and Ni(II). The complexes were characterized by spectroscopic methods (IR, UV-Vis and ESR) and magnetic measurements as well as thermal analysis (TG and DTA). The results obtained are commensurate with the proposed formulae. Spectral studies indicate that these complexes have an octahedral structure. From conductivity measurements the complexes are non-electrolytes. The kinetic of the thermal decomposition of the complexes was studied and the thermodynamic parameters are reported.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-007-8609-3