Thermodynamics Properties of 1,1-Carbonyldiimidazole (CDI) and 4-Imidazole Acrylic Acid, Obtained by DSC and Combustion Calorimetry

  • Baudelio Campos Universidad de Guadalajara
  • José María del Toro Jauregui Universidad de Guadalajara
  • Carmen Salomón Universidad de Guadalajara
  • Eulogio Orozco-Guareño Universidad de Guadalajara
Keywords: Imidazole, enthalpy of formation, melting poing, calorimetry, CDI


Abstract. In this work, thermodynamic properties of 1,1-carbonyldiimidazole (CDI) and 4-imidazole acrylic are reported. The melting temperature, the enthalpy of fusion and the heat capacity of the compounds were determined by differential scanning calorimetry. The standard molar energy of combustion of both compounds were determined by static-bomb combustion calorimetry and the standard molar enthalpy of formation in the crystalline phase, at T = 298.15 K, was derived and evaluated for the two imidazole derivatives studied. The energetic influence of the acrylic group on the imidazole ring in each of the properties obtained is analyzed and compared with the existing results in the literature.

Resumen. Se presentan las propiedades termodinámicas del 1,1-carbonildiimidazol (CDI) y el 4-imidazol acrílico. La temperatura de fusión, la entalpía de fusión y la capacidad calorífica de los compuestos se determinaron mediante calorimetría diferencial de barrido. La energía molar estándar de la combustión de ambos compuestos se determinó mediante calorimetría de combustión en bomba estática y la entalpía de formación en fase cristalina, a T= 298.15, fue derivada y evaluada para los dos compuestos derivados del imidazol. La influencia energética del grupo acrílico sobre el anillo de imidazol en cada una de las propiedades obtenidas se analiza y compara con los resultados existentes en la literatura.

Author Biographies

Baudelio Campos, Universidad de Guadalajara

Laboratorio de Fisicoquímica-Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías

José María del Toro Jauregui, Universidad de Guadalajara

Laboratorio de Fisicoquímica-Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías

Carmen Salomón, Universidad de Guadalajara

Laboratorio de Fisicoquímica-Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías

Eulogio Orozco-Guareño, Universidad de Guadalajara

Laboratorio de Fisicoquímica-Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías


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