Kinetic analysis of thermogravimetric data on some nickel(II) N-alkyldithiocarbamates |
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Authors: | M Lalia-Kantouri G A Katsoulos C C Hadjikostas P Kokorotsikos |
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Institution: | (1) Department of General and Inorganic Chemistry, Aristotle University, 54006 Thessaloniki, Greece |
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Abstract: | Thermogravimetric and derivative thermogravimetric curves of some complexes Ni(S2CNHR)2] (R=Me, Et, Pri, Bui, But, Bz,p-MePh,p-MeOPh,p-ClPh,p-NO2Ph) in a dynamic nitrogen atmosphere were studied to determine their modes of decomposition. All these complexes show similar TG profiles. The weight losses in the main decomposition stages indicate conversion of the nickel(II) dithiocarbamates to sulphide. Reaction orders were estimated via the shape characteristics of the corresponding derivative thermogravimetric curves and kinetic analysis of the thermogravimetric data was performed by using the Coats-Redfern and Horowitz-Metzger methods.
Zusammenfassung Im Stickstoffstrom wurden TG- und DTG-Kurven einiger Komplexe Ni(S2CNHR)2] mit R=Me, Et, Pri, Bui, But, Bz,p-MePh,p-MeOPh,p-ClPh undp-NO2Ph ermittelt, um Art und Weise ihrer Zersetzung zu bestimmen. Alle diese Komplexe zeigen ähnliche TG-Proflle. Die Gewichtsverluste der Hauptzersetzungsschritte weisen auf eine Umwandlung der Nickel(II)dithiokarbamate in Sulfide hin. Aus dem Verlauf der korrespondierenden DTG-Kurven wurde auf die Reaktionsordnung geschlossen und unter Anwendung der Coats-Redfern und Horowitz-Metzger Methoden wurde eine kinetische Analyse der TG-Daten durchgeführt.
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