Hydrothermal synthesis, structural and physico-chemical characterizations of two Nasicon phosphates

M0.50 IITi2(PO4)3 (M = Mn, Co)

Rachid Essehli, Brahim El Bali, S. Benmokhtar, Karla Fejfarová, Michal Dusek

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The family of titanium Nasicon-phosphates of generic formula M0.5 IITi2(PO4)3 has been revisited using hydrothermal techniques. Two phases have been synthesized: Mn0.5 IITi2(PO4)3 (MnTiP) and Co0.5 IITi2(PO4)3 (CoTiP). Single crystal diffraction studies show that they exhibit two different structural types. Mn0.5 IITi2(PO4)3 phosphate crystallizes in the R-3 space group, with the cell parameters a = 8.51300(10) Å and c = 21.0083(3) Å (V = 1318.52(3) Å3 and Z = 6). The Co0.5 IITi2(PO4)3 phosphate crystallizes in the R-3c space group, with a = 8.4608(9) Å and c = 21.174(2) Å (V = 1312.7(2) Å3 and Z = 6). These two compounds are clearly related to the parent Nasicon-type rhombohedral structure, which can be described using [Ti2(PO4)3] framework composed of two [TiO6] octahedral interlinked via three [PO4] tetrahedra. 31P magic-angle spinning nuclear magnetic resonance (MAS-NMR) data are presented as supporting data. Curie-Weiss-type behavior is observed in the magnetic susceptibility. The phases are also characterized by IR spectroscopy and UV-visible.

Original languageEnglish
Pages (from-to)1502-1510
Number of pages9
JournalMaterials Research Bulletin
Volume44
Issue number7
DOIs
Publication statusPublished - 1 Jul 2009
Externally publishedYes

Fingerprint

Hydrothermal synthesis
phosphates
Phosphates
Magic angle spinning
synthesis
Magnetic susceptibility
Infrared spectroscopy
Diffraction
Nuclear magnetic resonance
Single crystals
tetrahedrons
metal spinning
titanium
Titanium
magnetic permeability
nuclear magnetic resonance
single crystals
cells
diffraction
spectroscopy

Keywords

  • D: Crystal structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Hydrothermal synthesis, structural and physico-chemical characterizations of two Nasicon phosphates : M0.50 IITi2(PO4)3 (M = Mn, Co). / Essehli, Rachid; Bali, Brahim El; Benmokhtar, S.; Fejfarová, Karla; Dusek, Michal.

In: Materials Research Bulletin, Vol. 44, No. 7, 01.07.2009, p. 1502-1510.

Research output: Contribution to journalArticle

Essehli, Rachid ; Bali, Brahim El ; Benmokhtar, S. ; Fejfarová, Karla ; Dusek, Michal. / Hydrothermal synthesis, structural and physico-chemical characterizations of two Nasicon phosphates : M0.50 IITi2(PO4)3 (M = Mn, Co). In: Materials Research Bulletin. 2009 ; Vol. 44, No. 7. pp. 1502-1510.
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abstract = "The family of titanium Nasicon-phosphates of generic formula M0.5 IITi2(PO4)3 has been revisited using hydrothermal techniques. Two phases have been synthesized: Mn0.5 IITi2(PO4)3 (MnTiP) and Co0.5 IITi2(PO4)3 (CoTiP). Single crystal diffraction studies show that they exhibit two different structural types. Mn0.5 IITi2(PO4)3 phosphate crystallizes in the R-3 space group, with the cell parameters a = 8.51300(10) {\AA} and c = 21.0083(3) {\AA} (V = 1318.52(3) {\AA}3 and Z = 6). The Co0.5 IITi2(PO4)3 phosphate crystallizes in the R-3c space group, with a = 8.4608(9) {\AA} and c = 21.174(2) {\AA} (V = 1312.7(2) {\AA}3 and Z = 6). These two compounds are clearly related to the parent Nasicon-type rhombohedral structure, which can be described using [Ti2(PO4)3] framework composed of two [TiO6] octahedral interlinked via three [PO4] tetrahedra. 31P magic-angle spinning nuclear magnetic resonance (MAS-NMR) data are presented as supporting data. Curie-Weiss-type behavior is observed in the magnetic susceptibility. The phases are also characterized by IR spectroscopy and UV-visible.",
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