title: Following an isosymmetric phase transition by changes in bond lengths and anisotropic displacement parameters: the case of meta-carboxyphenylammonium phosphite.
abstract: Crystal structure studies in the 100-345 K temperature range were performed to relate the molecular structure changes of meta-carboxyphenylammonium phosphite (m-CPAMP) to its first-order phase transition at T(c) = 246 (2) K. Thermal displacement parameters and most bond distances show an abrupt jump at the transition. Such a structural change is related to collective effects leading to competition between intra- and intermolecular interactions.
authors.affiliation: Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux et Biologiques LCM3B CNRS UMR 7036, Institut Jean Barriol Nancy Université, Faculté des Sciences, BP 239, 54506 Vandoeuvre-lès-Nancy CEDEX, France.
authors.forename: El-Eulmi
authors.initials: el-E
authors.lastname: Bendeif
authors.forename: Claude
authors.initials: C
authors.lastname: Lecomte
authors.forename: Slimane
authors.initials: S
authors.lastname: Dahaoui