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anti fluorite structure

Na2O Antifluorite: Interactive 3D Structure

Interactive 3D chemistry animations and models for students studying advanced school chemistry and University chemistry courses hosted by University of Liverpool, an internationally renowned seat of learning and research in the United Kingdom.

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Anti-structure Wikipedia

The same crystal structure is found in numerous ionic compounds with formula AB 2, such as ceria (CeO 2), zirconia (cubic ZrO 2), uranium dioxide (UO 2). In the corresponding anti-structure, called the antifluorite structure, anions and cations are swapped, such as beryllium carbide (Be 2 C) or lithium oxide (Li 2 O), potassium sulfate (K 2 SO 4).

Category: Halide mineral

Antifluorite structure | crystallography | Britannica

Other articles where Antifluorite structure is discussed: sulfide mineral:eight metal cations—is called the antifluorite structure. It is the arrangement of some of the more valuable precious metal tellurides and selenides among which is hessite (Ag2Te), the ore mineral of silver.

Welcome to ChemZipper !!: ANTIFLUORITE STRUCTURE

19/04/2019· antifluorite structure (revere of fluorite) na2o: The compound having A 2 B formula are compounds having anti fluorite structure : Anti fluorite structure is having arrangement of cations and anions opposite to the fluorite structure Li 2 O has an anti fluorite structure.

antifluorite structure oi OUP

A crystal structure for ionic compounds of the type M 2 X, which is the same as the fluorite (CaF 2) structure except that the positions of the anions and cations are reversed, i.e. the cations occupy the F − sites and the anions occupy the Ca 2+ sites. Examples of the antifluorite structure are given by K 2 O and K 2 S. See fluorite structure.

Structure of Solid: The CaF2 (fluorite) structure

A unit cell representation of fluorite structure is shown in the figure. Figure. Unit cell representation of CaF2 structure. The calcium ions are marked as green

fluorite and anti fluorite

15/11/2017· -- Created using PowToon -- Free sign up at http://www.powtoon/youtube/ -- Create animated videos and animated presentations for free. PowToon is a free

作者: Hairudin Haryadi

Welcome to ChemZipper !!: ANTIFLUORITE STRUCTURE

19/04/2019· antifluorite structure (revere of fluorite) na2o: The compound having A 2 B formula are compounds having anti fluorite structure : Anti fluorite structure is having arrangement of cations and anions opposite to the fluorite structure Li 2 O has an anti fluorite structure.

antifluorite Wiktionary

13/03/2019· Definition from Wiktionary, the free dictionary. Jump to navigation Jump to search. English [] Etymology []. anti-+‎ fluoriteNoun []. antifluorite (plural antifluorites) A mineral crystal structure identical with that of fluorite but with the positions of the cations and anions reversed

Anti-structure Wikipedia

In crystallography, an anti-structure is obtained from a salt structure by exchanging anion and cation positions.. For instance, calcium fluorite, CaF 2, crystallizes in a cubic motif called the fluorite structure.The same crystal structure is found in numerous ionic compounds with formula AB 2, such as ceria (CeO 2), zirconia (cubic ZrO 2), uranium dioxide (UO 2).

ANTIFLUORITE STRUCTURE(in Hindi)

20/03/2018· Hello viewers, Easy explaination for solid structure antifluorite type crystal please check out our other playlists also like,share ,subscribe and press the bell for updates thanx for watching

作者: Chemistry For Exams

What is an antifluorite structure Chemistry - 1813508

Examples of compounds with this structure are CaF 2, BaCl 2, and PbO 2. The antifluorite structure is the opposite arrangement, with anions in the fcc array with coordination number 8 and cations in the tetrahedral holes with coordination number 4. Examples of the antiflurite structure are K 2 O, Li 2 O, Na 2 O, K 2 S, and Na 2 S.

Fluorite vs Antifluorite What's the difference? | WikiDiff

As nouns the difference between fluorite and antifluorite is that fluorite is while antifluorite is (mineral) a mineral crystal structure identical with that of fluorite but with the positions of

Chem 107 2015

Fluorite (CaF2) and Antifluorite (Li2O) Ca2+ CaF 2 •origin of the term “fluorescence” (George Stokes, 1852) •fluorite common for fluorides of large, divalent cations and oxides of large tetravalent cations (M2+F 2and M 4+O 2) •antifluorite common for oxides/chalcogenides of alkali

1.17 Some important structure types a) Rock salt (NaCl

1 (The text is taken from: Basic Solid State Chemistry, by Anthony R. West) 1.17 Some important structure types a) Rock salt (NaCl), zinc blende or sphalerite (ZnS), fluorite (CaF2), antifluorite (Na2O) These structures are considered together because they all have ccp/fcc anions and differ only in the positions of the cations.

Introduction to Inorganic Chemistry/Ionic and Covalent

The morphology of twinned crystals of iron pyrite (FeS 2) is related to the underlying cubic symmetry of the unit cell.Like NaCl, the pyrite crystal structure can be thought of as a face-centered cubic array of anions (S 2 2-) with cations (Fe 2+) occupying all the octahedral holes.

Antifluorite structure Oxford Reference

A crystal structure for ionic compounds of the type M 2 X, which is the same as the fluorite (CaF2) structure except that the positions of the anions and cations are reversed, i.e. the cations occupy the F− sites and the anions occupy the Ca2+ sites. Examples of the antifluorite structure are given by K2O and K2S. See fluorite structure.

Compounds with a ‘stuffed’ anti-bixbyite-type structure

01/02/2009· In the context of an anti-bixbyite structure (space group ) such as magnesium nitride (a cation-deficient, anti-fluorite-related compound of the general formula M 3 M N 2, where M is a vacancy in the cation sublattice), what we now might call an anti-CD is described as an octahedron of MX 4 tetrahedra sharing corners to enclose an empty

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Crystal structure bof CaF2 and Na2O (Fluorite and

Sir can you please explain how Al2O3 is anti fluorite structure? Didn't understand that point. 0. Reply. View More

Anti-structure Wikipedia

The same crystal structure is found in numerous ionic compounds with formula AB 2, such as ceria (CeO 2), zirconia (cubic ZrO 2), uranium dioxide (UO 2). In the corresponding anti-structure, called the antifluorite structure, anions and cations are swapped, such as beryllium carbide (Be 2 C) or lithium oxide (Li 2 O), potassium sulfate (K 2 SO 4).

Which type of cubic structure is Na2O? Quora

13/10/2016· Sodium oxide had got anti fluorite structure. Since sodium ions are smaller in size they go to voids and since the number of sodium ions is twice the number of oxide ions, all the tetrahedral voids are filled. So the structure comes out as oxide i...

Chemistry: Fluorite structure

06/09/2012· The structure of fluorite is a ccp array of calcium ions with (smaller) fluorine ions inside every tetrahedral hole. Reversing the locations of the cations and ions creates an antifluorite structure. Reversing the locations of the cations and ions creates an antifluorite structure.

Ab initio study of the structural, electronic and elastic

15/04/2014· The electronic band structure calculation reveals that the anti-fluorite Li 2 S and Li 2 Te present, at equilibrium, an indirect band gap of 3.388 eV and 2.493 eV respectively. The partial density of states plots reflect the p electronic contribution, through the top of the valence bands, for both systems.

Structures of Some Binary and Ternary Compounds Such as

Structure Rhenium Oxide or ReO3, Structure of Manganese oxide or Mn2O3, Structure of Corundum or Al2O3, Structure of Perovskite or CaTiO3, Structure of Ilmenite or FeTiO3, Structure of Calcite or CaCO3, Structure of Fluorite or CaF2, Structure of Antifluorite or Na2O, Structure of Rutile or TiO2, Structure of Antirutile or Ti2N, Structure of Cristobalite or SiO2, Structure of Cadmium Iodide or

3 Structure types

In the related Anti-Fluorite structure Cation and Anion positions are reversed CaF2 CaF2 FCa4 tetraheda Na2O NaO4 tetraheda K2O / CaF2. The diamond lattice is composed of two interpenetrating fcc lattices, one displaced 1/4 of a lattice constant in each direction from the other. Each site is tetrahedrally coordinated with four other sites in the other sublattice. When the two sublattices

Structures of Simple Ionic Compounds Everyscience

The antifluorite structure is that adopted by compounds with the stoichiometry A 2 B, where A is the cation and B is the anion. Examples include potassium oxide, K 2 O. Here, the fcc array of oxide ions has potassium ions in all the tetrahedral holes, and there is a (4,8)-coordination.

anti fluorite structure

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