2024-03-29T10:16:53Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2108132022-01-31T11:06:02Zcom_10261_28457com_10261_3col_10261_28462
Crystal structure, phase transitions, dielectric and vibrational studies and photoluminescence properties of a new iron fluoride based on bipyridine
Bouketaya, Sabrine
Elferjani, Atef
Abdelbaky, Mohammed S. M.
Dammak, Mohamed
García-Granda, Santiago
Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (Tunisie)
Ministerio de Economía y Competitividad (España)
Hybrid fluoride
Iron
2,2′-bipyridine
DSC
Impedance spectroscopy
Photoluminescence properties
The new iron-fluoride, based on bipyridine formulated as FeF3(2,2′-bpy) (2,2′-bpy = 2,2′-bipyridine), was obtained by hydrothermal synthesis. The crystalline structure was characterized by single crystal X-Ray diffraction data analysis. It crystallizes in monoclinic space group Cc, with a = 14.030(4) Å, b = 9.487(3) Å, c = 7.650(2) Å and β = 103.287(3)º. Moreover, it exhibits three-dimensional organic-inorganic network, resulting from the association of [FeF4N2]∞ chains pertaining to corner sharing FeF4N2 octahedra extending along with the c-axis linked through weak C–H...F hydrogen bonds. The thermal analysis (TG, SDTA and DSC) of the title compound reveals the presence of the phase transitions at high temperature. In order to shed light on the electrical conductivity and dielectric properties of the title compound, we carried out, in the frequency range 200 to 2E5 Hz, impedance spectroscopy technique, in the temperature range 310–380K. The conductivity relaxation parameters of some H+ conducting in the FeF3(2,2′-bpy) material were determined from an analysis pertaining to electric conductivity data. Transport properties in this material appear due to proton hopping mechanism. Finally, the optical properties were evaluated by photoluminescence spectroscopy.
We acknowledge financial support from the Ministry of Higher Education and Scientific Research of Tunisia and Spanish Ministerio de Economía y Competitividad (MAT2016–78155-C2-1-R and FPI grant BES-2011–046948 to MSM.A.).
2020-05-08T10:54:48Z
2020-05-08T10:54:48Z
2019
2020-05-08T10:55:03Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.jssc.2019.06.036
issn: 0022-4596
Journal of Solid State Chemistry 277: 395-405 (2019)
http://hdl.handle.net/10261/210813
10.1016/j.jssc.2019.06.036
http://dx.doi.org/10.13039/501100003329
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-78155-C2-1-R
https://doi.org/10.1016/j.jssc.2019.06.036
Sí
none
Elsevier