Abstract
The thermal decomposition of halogenopentaammine- and cis-dmalogenotetraammineruthenium(III) complexes was studied by the techniques of thermogravimetry(TG), differential thermal analysis(DTA), and evolved gas analysis (EGA). The stoichiometry of the decomposition reaction was determined by the analysis of the reaction intermediates and products. The order of decreasing thermal stability, as well as order of temperature of massloss initiation, seems to be: [RuCl(NH3)5]Cl2>[RuBr(NH3)5]Br2>[RuI(NH3)5]I2 for monohalogeno complexes, and cis-[RuCl2(NH3)4]Cl>cis-[RuBr2(NH3)4]Br>cis-[RuI2(NH3)4]I for dihalogeno complexes. Trihalogenotriammine complexes were observed as intermediates for the cases of dichloro and bromo complexes, a simple decomposition reaction was found for the iodo complexes, and then the activation energy for the following reaction was determined: [RuI(NH3)5]I2→RuI3+5NH3, Ea=41.9 kcal/mol and cis-[RuI2(NH3)4]I→RuI3+4NH3, Ea=27.8 kcal/mol. The reaction mechanisms may be summarized as follows: (...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
