Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Characterization of the time-dependent L-asparagine monohydrate crystal phase transition|
|Author:||de Menezes, AS|
dos Santos, AO
|Abstract:||The high-temperature phase transition of single crystals of l-asparagine monohydrate was investigated by X-ray diffraction in association with Rietveld refinement and dilatometer measurements as a function of annealing time. The X-ray results showed that, for samples annealed at 343 K (or even 333 K) for 5 h, the expected anhydrous l-asparagine phase has been formed, monoclinic system (space group P2(1)), with lattice parameters a = 5.0677 (2), b = 6.7657 (2), c = 8.0742 (3) angstrom and beta = 91.276 (4)degrees. The results obtained from measurements as a function of annealing time confirmed that the phase transition associated with loss of the water molecule is time dependent.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.