Abderrazzak Assani

ORCID: 0000-0002-4737-2966
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About
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Research Areas
  • Crystal Structures and Properties
  • Chemical Synthesis and Characterization
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Polyoxometalates: Synthesis and Applications
  • Metal-Organic Frameworks: Synthesis and Applications
  • Inorganic Chemistry and Materials
  • Advanced Condensed Matter Physics
  • Solid-state spectroscopy and crystallography
  • Zeolite Catalysis and Synthesis
  • Crystal structures of chemical compounds
  • Luminescence Properties of Advanced Materials
  • Ferroelectric and Piezoelectric Materials
  • Thermal and Kinetic Analysis
  • Photorefractive and Nonlinear Optics
  • Advanced Photocatalysis Techniques
  • Microwave Dielectric Ceramics Synthesis
  • Catalytic Processes in Materials Science
  • Nuclear materials and radiation effects
  • Gas Sensing Nanomaterials and Sensors
  • Catalysis and Oxidation Reactions
  • Inorganic Fluorides and Related Compounds
  • Advancements in Battery Materials
  • Nanomaterials for catalytic reactions
  • Advanced Battery Materials and Technologies

Mohammed V University
2015-2024

Laboratoire de Chimie
2018-2023

Centre des Matériaux
2018-2020

Graz University of Technology
2018-2020

University of Kentucky
2020

Laboratoire de Chimie Physique
1998-2015

Effect of microstructure on conductivity earth-abundant NASICON phosphate, Na 4 MnFe(PO ) 3 , was investigated. Small particle size is designed showing improved conductivity.

10.1039/d4ra03529a article EN cc-by-nc RSC Advances 2024-01-01

The title compound, Na2Co2Fe(PO4)3, was synthesized by a solid-state reaction. This new stoichiometric phase crystallizes in an alluaudite-like structure. In this structure, all atoms are general positions except for four which located at the special of C2/c space group. One Co atom, one P and Na atom on Wyckoff position 4e (2), while second is inversion centre 4a (-1). other Fe occupy with statistical distribution. open framework results from [(Co,Fe)2O10] units edge-sharing [(Co,Fe)O6]...

10.1107/s2056989015007926 article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2015-04-24

The new title compound, disodium dizinc iron(III) tris(phosphate), Na 1.67 Zn Fe 1.33 (PO 4 ) 3 , which belongs to the alluaudite family, has been synthesized by solid-state reactions. In this structure, all atoms are in general positions except for four, located on special of C 2/ c space group. This structure is characterized cation substitutional disorder at two sites, one situated position e (2) and other 8 f . site partially occupied + [0.332 (3)], whereas entirely filled a mixture Zn....

10.1107/s2056989015009767 article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2015-05-22

The title compound, AgMg(3)(PO(4))(HPO(4))(2), which has been synthesized by the hydro-thermal method, an alluaudite-like structure is formed edge-sharing MgO(6) octa-hedra (one of symmetry 2), resulting in chains linked together phosphate groups and hydrogen bonds. three-dimensional framework leads to two different channels along c axis, one occupied Ag(+) ions with a square-planar coordination. are disordered over sites 0.89 (3):0.11 (3) ratio. OH groups, point into other type channel,...

10.1107/s1600536810053304 article EN cc-by Acta Crystallographica Section E Structure Reports Online 2010-12-23

The title compound, sodium trimagnesium bis-(hydrogen phosphate) phosphate, was obtained under hydro-thermal conditions. In the crystal, two types of [MgO6] octa-hedra, one with point group symmetry 2, share edges to build chains extending parallel [10-1]. These are linked together by kinds phosphate tetra-hedra, HPO4 and PO4, latter 2. three-dimensional framework delimits different channels along [001]. One channel hosts Na(+) cations (site 2) surrounded eight O atoms, Na-O bond lengths...

10.1107/s205698901501155x article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2015-06-18

The title compound, strontium trimanganese tris-(ortho-phosphate), was synthesized under hydro-thermal conditions. Its structure is isotypic to that of the lead analogue PbMn(II) 2Mn(III)(PO4)3. Two O atoms are in general positions, whereas all others special positions. Sr and one P atom exhibit mm2 symmetry, Mn(II) 2/m Mn(III) other .2. symmetry two located on mirror planes. three-dimensional network crystal made up types chains running parallel [010]. One chain linear composed alternating...

10.1107/s1600536813020977 article EN cc-by Acta Crystallographica Section E Structure Reports Online 2013-08-13

The title compound, SrNi2Fe(PO4)3, synthesized by solid-state reaction, crystallizes in an ordered variant of the α-CrPO4 structure. In asymmetric unit, two O atoms are general positions, whereas all others special positions space group Imma: Sr cation and one P atom occupy Wyckoff position 4e (mm2), Fe is on 4b (2/m), Ni other 8g (2), 8h (m) 8i (m). three-dimensional framework crystal structure built up [PO4] tetra-hedra, [FeO6] octa-hedra [Ni2O10] dimers edge-sharing octa-hedra, linked...

10.1107/s205698901501779x article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2015-09-25

The title compound, barium trimanganese tris­(ortho­phosphate), was synthesized hydro­thermally. Its structure is isotypic with the lead and strontium analogues AMnII2MnIII(PO4)3 (A = Pb, Sr). Except for two O atoms on general positions, all are located special positions. Ba one P atom exhibit mm2 symmetry, MnII 2/m MnIII other .2. symmetry mirror planes. crystal contains types of chains running parallel to [010]. One chain linear composed alternating MnIIIO6 octa­hedra PO4 tetra­hedra...

10.1107/s1600536813023106 article EN cc-by Acta Crystallographica Section E Structure Reports Online 2013-08-22

The title compound, lead trimanganese tris(orthophosphate), has been synthesized by hydro-thermal methods. In this structure, only two O atoms are in general positions and all others the special of Imma space group. Indeed, Wyckoff namely: Pb1 P1 on 4e (mm2); Mn1 4b (2/m); Mn2 P2 8g (2); O1 8h (m); O2 8i (m). crystal structure can be viewed as a three-dimensional network corner- edge-sharing PO4 tetra-hedra MnO6 octa-hedra, building types chains running along b axis. first is an infinite...

10.1107/s1600536813016504 article EN cc-by Acta Crystallographica Section E Structure Reports Online 2013-06-20

The title compound, Ag2Ni3(HPO4)(PO4)2, has been synthesized by the hydro­thermal method. Its structure is formed two types of chains running along b axis. first chain results from a linear and continuous succession NiO6 octa­hedra linked to PO4 tetra­hedra common vertex. second built up adjacent edge-sharing (dimers) whose ends are edge. Those together phosphate groups form polyhedral sheets parallel (001) plane. three-dimensional framework delimits hexa­gonal tunnels a-axis direction, at...

10.1107/s1600536811021167 article EN cc-by Acta Crystallographica Section E Structure Reports Online 2011-06-11

A novel pyrophosphate Na7Ni3Fe(P2O7)4 was synthesized in two distinct forms, single-crystal and powder. Single-crystal X-ray diffraction used to determine the crystal structure, powder scanning electron microscopy were examine purity morphology of elaborated This phosphate crystallizes P1¯ space group triclinic system with a = 6.3677 (2) Å, b 9.3316 (4) c 10.8478 α 65.191 (1)°, β 80.533 (1)° γ 73.042 (1)°. The framework is assembled from linkage centro-symmetrical clusters Ni2(Ni/Fe)2P4O28....

10.3390/magnetochemistry9070162 article EN cc-by Magnetochemistry 2023-06-24

The new silver-, cobalt- and iron-based phosphate, silver cobalt iron tris(ortho-phosphate), Ag1.655Co1.64Fe1.36(PO4)3, was synthesized by solid-state reactions. Its structure is isotypic to that of Na2Co2Fe(PO4)3, belongs the alluaudite family, with a partial cationic disorder, AgI atoms being located on an inversion centre twofold rotation axis sites (Wyckoff positions 4a 4e), occupancies 0.885 (2) 0.7688 (19), respectively. One two P in asymmetric unit completely fills one 4e site while...

10.1107/s205698901700740x article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2017-05-26

The title compound, sodium (sodium,manganese) triiron(II,III) tris[vana-date(V)], (Na0.70)(Na0.70,Mn0.30)(Fe(3+),Fe(2+))2Fe(2+)(VO4)3, was prepared by solid-state reactions. It crystallizes in an alluaudite-like structure, characterized a partial cationic disorder. In the four of 12 sites asymmetric unit are located on special positions, three twofold rotation axis (Wyckoff position 4e) and one inversion centre (4b). Two entirely filled Fe(2+) V(5+), whereas third site has occupancy 70%...

10.1107/s2056989016000931 article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2016-01-21

The title compound, SrCo 2 Fe(PO 4 ) 3 , has been synthesized by a solid-state reaction. It crystallizes with the α-CrPO type structure. In this structure, all atoms are on special positions of Imma space group, except for two O which located general positions. three-dimensional network in crystal structure is made up types layers stacked normal to (100). first layer built from edge-sharing CoO 6 octahedra, leading formation Co 10 dimers that connected PO tetrahedra common edge and corners....

10.1107/s2056989016011373 article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2016-07-19

Single crystals of sodium copper(II) indium bis[phosphate(V)], NaCuIn(PO 4 ) 2 , were grown from the melt under atmospheric conditions. The title phosphate crystallizes in space group P 1 / n and is isotypic with KCuFe(PO . In crystal, two [CuO 5 ] trigonal bipyramids share an edge to form a dimer [Cu O 8 that connected PO tetrahedra. obtained 12 units are interconnected through vertices sheets sandwiched between undulating layers resulting junction tetrahedra [InO 6 octahedra. types...

10.1107/s2056989020001929 article EN cc-by Acta Crystallographica Section E Crystallographic Communications 2020-02-14
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