The unit-cell dimensions of phases of Cu, Ag or Au with the CsCl structure
Abstract
The unit-cell dimensions of phases with the CsCl structure that contain Cu, Ag or Au(A) are examined as a function of the diameters of the component atoms, DA and DB and compared with those of phases of other A components. The cell dimensions of phases with upper composition of the B component limited by an electron concentration of 1.5 electrons per atom are controlled by the A – B contacts. The cell dimensions of phases containing the rare earths (B) are controlled by the A – B and B−B contacts acting cojointly. The Li and Mg phases of Ag and Au have unusually small cell dimensions. Whereas the Ag and Au phases with composition limited by electron concentration 1.5 have the same cell sizes, the Li, Mg, Sc, Y and rareearth phases of Au have cell sizes on the average 0.051 Å smaller than the Ag phases. This is accounted for in terms of the electronegativity differences for this group of Au phases. The Au phases of the alkali metals are discussed; the size of the Au− ion is deduced; the essential metallic nature of AuLi is demonstrated, and the non-existance of AuNa and AuK is rationalized. The AgMg phase with a range of homogeneity, is particularly considered.
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- Refinement of the crystal structure of hydroquinone-hydrogen sulfide clathrate
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- Graphical derivation of the several settings of an orthorhombic crystal*
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Articles in the same Issue
- Neutron diffraction study of the thermal and oxygen position parameters in rutile
- The crystal structures of α- and β-forms of plutonium(IV) sulphate tetrahydrate
- Crystal morphology of monoclinic potassium feldspars
- Morphology and crystal growth of structurally related A2BX4- and A2BX3-compounds*
- Structure of p-methylphenoxyacetic acid a redetermination
- Die Kristallstruktur von NaCrP2O7
- The crystal structure of 6′-acetamido6-bromo-2-cyano-4′-diethylamino-4-nitroazobenzene
- The crystal structure of 4-nitrophenyl-α-d-glucopyranoside1
- The crystal structure of 2-nitrophenyl-β-d-glucopyranoside1
- Refinement of the crystal structure of hydroquinone-hydrogen sulfide clathrate
- The unit-cell dimensions of phases of Cu, Ag or Au with the CsCl structure
- A new refinement of monoclinic tetracyanoethylene (TCNE) from X-ray and neutron data
- The crystal structure of antimony selenoiodide, SbSeI
- Graphical derivation of the several settings of an orthorhombic crystal*
- The crystal structure of 3,4-dinitrophenyl-β-d-glucopyranoside hydrate*
- The crystal structure of 2,3,4,6-tetra-O-acetyl-3,4-dinitrophenyl-β-d-glucopyranoside*
- Electrogyration in cubic alkaline earth nitrates
- X-ray powder diffraction data of cholinium salt with dipicrylamine
- Single crystal growth and physical properties of cubic Zn4O(BO2)6
