The standard enthalpy of formation of silver pivalate

• Published in: Journal of thermal analysis and calorimetry Vol. 92; no. 3; pp. 743 - 746
• Main Authors: Lukyanova, V. A., Papina, T. S., Didenko, K. V., Alikhanyan, A. S.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2008
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; silver pivalate; calorimetry; enthalpy of combustion; enthalpy of formation; thermochemistry
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-008-9019-x

The standard enthalpy of combustion of crystalline silver pivalate, (CH 3 ) 3 CC(O)OAg (AgPiv), was determined in an isoperibolic calorimeter with a self-sealing steel bomb, Δ c H 0 (AgPiv, cr)= −2786.9±5.6 kJ mol −1 . The value of standard enthalpy of formation was derived for crystalline state: Δ f H 0 (AgPiv,cr)= −466.9±5.6 kJ mol −1 . Using the enthalpy of sublimation, measured earlier, the enthalpy of formation of gaseous dimer was obtained: Δ f H 0 (Ag 2 Piv 2 ,g)= −787±14 kJ mol −1 . The enthalpy of reaction (CH 3 ) 3 CC(O)OAg(cr)=Ag(cr)+(CH 3 ) 3 CC(O)O . (g) was estimated, Δ r H 0 =202 kJ mol −1 .