On the Crystallography and Thermodynamics in Orientationally Disordered Phases in Two-Component Systems

Autor: J. Ll. Tamarit, Harry A.J. Oonk, Josep Salud, Yvette Haget, David López, Maria Barrio, Philippe Négrier
Rok vydání: 1997
Předmět:
Zdroj: Journal of Solid State Chemistry. 133:536-544
ISSN: 0022-4596
DOI: 10.1006/jssc.1997.7530
Popis: The experimental two-component phase diagram between the orientationally disordered crystals 2-amino-2-methyl-1,3-propanediol (AMP) and 1,1,1-tris(hydroxymethyl)propane (PG) has been established from room temperature to the liquid state using thermal analysis and X-ray powder diffraction techniques. The intermolecular interactions in the orientationally disordered mixed crystals of the mentioned system and other related two-component systems are discussed by analyzing the evolution of the packing coefficient as a function of the the composition. A thermodynamic analysis of the presented phase diagram and the redetermined AMP/NPG (2,2-dimethyl-1,3-propanediol) is reported on the basis of the enthalpy–entropy compensation theory.
Databáze: OpenAIRE