Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 32: Issue 4
Thermal degradation of the transition metal carbonyl complexes
I. TG and DSC of monodentate bis-(diphenylphosphino)-methane substituted carbonyl complexes of chromium, molybdenum and tungsten
Authors:
H. S. O. Chan Department of Chemistry National University of Singapore 0511 Kent Ridge Singapore

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T. S. A. Hor Department of Chemistry National University of Singapore 0511 Kent Ridge Singapore

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C. S. M. Chiam Department of Chemistry National University of Singapore 0511 Kent Ridge Singapore

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T. C. Chong Department of Chemistry National University of Singapore 0511 Kent Ridge Singapore

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Pages:
1115–1126
Online Publication Date:
22 Jul 2005
Publication Date:
01 Jul 1987
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01905166
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The thermal degradation of three monosubstituted hexacarbonyl complexes, M(CO)5(dppm) (whereM=Cr, Mo and W;dppm=Bis-(diphenylphosphino)-methane) has been studied using TG and DSC technics and their results reported. All the complexes facilely lose a carbonyl ligand (CO) below 200 °C. The kinetic analysis on the molybdenum complex suggested a first order dissociation pathway for this decarbonylation process. Dephosphination occurred at high temperature, followed by further decarbonylations. The enthalpy changes associated with the first decarbonylation are reported. The measured kinetic parameters are in good agreement with the literature values on similar systems obtained from solution studies.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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)

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