Authors:
S. Singhal Indian Institute of Technology Department of Chemistry Roorkee 247 667 India Roorkee 247 667 India

Search for other papers by S. Singhal in
Current site
Google Scholar
PubMed
Close
,
A. Garg Indian Institute of Technology Department of Chemistry Roorkee 247 667 India Roorkee 247 667 India

Search for other papers by A. Garg in
Current site
Google Scholar
PubMed
Close
, and
K. Chandra Institute Instrumentation Centre Indian Institute of Technology Roorkee 247 667 India Indian Institute of Technology Roorkee 247 667 India

Search for other papers by K. Chandra in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract  

Transition metal dithiocarbamate complexes, [M(S2CN(C2H5)(CH2CH2OH)] (M=Co, Ni, Cu, Zn and Cd) have been prepared and characterized by elemental analysis and infrared spectra. Thermal decomposition of all the complexes occurs in two or three stages. The first stage in all the complexes is always fast with 65-70% mass loss. In all cases the end product is metal oxide except in the case of cobalt complex which gives Co metal as an end product. During decomposition of copper complex, first CuS is formed at ~300C which is converted into CuSO4 and finally CuO is formed. However, decomposition in helium atmosphere yields CuS. SEM studies of transition metal dithiocarbamates reveal needle shape crystalline phase at room temperature and formation of metal sulphide/oxide at higher temperatures. The activation energy varies in a large range of 33.8-188.3 kJ mol-1, being minimum for the Cu complex and maximum for the Zn complex possibly due to d10 configuration. In the case of Ni, Zn and Cd complexes the order of reaction is two suggesting bimolecular process involving intermolecular rearrangement. However, in other cases it is a unimolecular process. Large negative values of ΔS# for all the complexes suggest that the decomposition process involves rearrangement.

  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jan 2024 41 0 2
Feb 2024 19 0 0
Mar 2024 16 0 0
Apr 2024 23 0 0
May 2024 13 0 0
Jun 2024 2 0 0
Jul 2024 0 0 0