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Related Concept Videos

Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Qualitative Analysis03:46

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
The Seven Crystal Systems: Overview01:24

The Seven Crystal Systems: Overview

Crystals with various point group symmetries belong to different crystal classes, which are synonymous terms. Despite being in the same class, crystals may have distinct shapes, like cubes and octahedra. There are 32 three-dimensional point groups, all of which are systematically divided into seven crystal systems.The basic cubic crystal system, exemplified by NaCl, features orthogonal vectors (α = β = �� = 90°) of equal lengths (a = b = c). When specific requirements are not imposed on the...
Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.

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Fabrication and Optimization of Type II Silicon Clathrate Films
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Sodium scandium diphosphate, NaScP(2)O(7), isotypic with α-NaTi(III)P(2)O(7).

Jan Cempírek, Radek Skoda, Zdirad Zák

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Sodium scandium diphosphate (NaScP(2)O(7)) crystals were synthesized and structurally characterized. Its framework comprises corner-shared ScO(6) octahedra and P(2)O(7) units, with sodium ions located in tunnels.

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    Area of Science:

    • Inorganic Chemistry
    • Solid-State Chemistry
    • Crystallography

    Background:

    • Sodium diphosphates are a class of inorganic compounds with diverse structural motifs and potential applications.
    • Understanding the structure-property relationships in these materials is crucial for designing new functional materials.

    Purpose of the Study:

    • To synthesize and characterize the crystal structure of sodium scandium diphosphate (NaScP(2)O(7)).
    • To investigate its structural relationship with other known diphosphates.

    Main Methods:

    • Flux method for crystal growth.
    • Single-crystal X-ray diffraction for structural determination.

    Main Results:

    • NaScP(2)O(7) crystallizes in a structure isotypic with related diphosphates.
    • The structure features a 3D framework of corner-shared ScO(6) octahedra and P(2)O(7) units.
    • Sodium ions reside within tunnels, coordinated by nine oxygen atoms in a distorted environment.

    Conclusions:

    • The crystal structure of NaScP(2)O(7) has been successfully determined.
    • The compound exhibits a framework structure with potential for ion exchange or other host-guest chemistry.
    • Its structural similarity to other diphosphates provides a basis for comparative studies.