Cristallogenèse et étude structurale, thermodynamique et spectroscopique du formiate de lithium monohydrate : rôle du groupement organique et des liaisons hydrogène dans les propriétés vibrationnelles

Abstract : In the present study, single crystals of lithium formate monohydrate (lfmh) were grown from aqueous solutions and correctly oriented. The thermal behaviour (dsc, tg) of lfmh showed that the dehydration process is complex and occurs in two steps. The spectroscopic study has enabled us to confirm first the presence of a particular behaviour in the low temperature of the Raman intensities related to the organic groups and second the existence of an order-disorder phase transition which occurs between (313 K-329 K), as well as of two different structural phase transitions in the temperature range (329 K-369K) and (401 K - 491K) respectively. Further more, the hydrogen bond frequencies were detected and their behaviour with increasing temperature have been studied
Complete list of metadatas

Cited literature [22 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01777197
Contributor : Administrateur Du Ccsd <>
Submitted on : Tuesday, April 24, 2018 - 4:14:05 PM
Last modification on : Thursday, April 26, 2018 - 1:28:29 AM
Long-term archiving on : Wednesday, September 19, 2018 - 4:01:13 PM

File

Mouaine.Khzlid.SMZ9710.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01777197, version 1

Collections

Citation

Khalid Mouaïne. Cristallogenèse et étude structurale, thermodynamique et spectroscopique du formiate de lithium monohydrate : rôle du groupement organique et des liaisons hydrogène dans les propriétés vibrationnelles. Autre [cond-mat.other]. Université Paul Verlaine - Metz, 1997. Français. ⟨NNT : 1997METZ010S⟩. ⟨tel-01777197⟩

Share

Metrics

Record views

12

Files downloads

7