’FACE-TO-FACE’ RELATIONSHIPS BETWEEN OXOCENTERED TETRAHEDRA AND CATION-CENTRED TETRAHEDRAL OXYANIONS IN CRYSTAL STRUCTURES OF MINERALS AND INORGANIC COMPOUNDS

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Abstract

Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu4] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral oxyanions (T(n+)O4)(-(8-n)) with T = S6+ or V5+, or triangular pyramidal oxyanions (SeO3)2- (which may be considered as (SeO3E)2- tetrahedra assuming the lone pair E of selenium to be a fourth ligand): (T(n+)O4)(-(8-n)) tetrahedra are ’attached’ to the oxocentred tetrahedra so that their grounds (O-O-O and Cu-Cu-Cu) are parallel to each other and the mutual orientation is regular (O corners are exactly under Cu corners). We propose to describe these relationships as ’face-to-face’, meaning that the oxocentred and cation-centred tetrahedra ’meet’ along their ’whole’ triangular faces. Geometric characteristics of ’face-to-face’ relationships are discussed.
Original languageEnglish
Pages (from-to)263-266
JournalMineralogical Magazine
Issue number2
Publication statusPublished - 1999
Externally publishedYes

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Inorganic compounds
inorganic compound
Selenium
selenium
crystal structure
ligand
Minerals
Cations
cation
Crystal structure
Ligands
mineral
analysis

Cite this

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title = "’FACE-TO-FACE’ RELATIONSHIPS BETWEEN OXOCENTERED TETRAHEDRA AND CATION-CENTRED TETRAHEDRAL OXYANIONS IN CRYSTAL STRUCTURES OF MINERALS AND INORGANIC COMPOUNDS",
abstract = "Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu4] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral oxyanions (T(n+)O4)(-(8-n)) with T = S6+ or V5+, or triangular pyramidal oxyanions (SeO3)2- (which may be considered as (SeO3E)2- tetrahedra assuming the lone pair E of selenium to be a fourth ligand): (T(n+)O4)(-(8-n)) tetrahedra are ’attached’ to the oxocentred tetrahedra so that their grounds (O-O-O and Cu-Cu-Cu) are parallel to each other and the mutual orientation is regular (O corners are exactly under Cu corners). We propose to describe these relationships as ’face-to-face’, meaning that the oxocentred and cation-centred tetrahedra ’meet’ along their ’whole’ triangular faces. Geometric characteristics of ’face-to-face’ relationships are discussed.",
author = "S.V. Krivovichev and G.L. Starova and S.K. Filatov",
year = "1999",
language = "English",
pages = "263--266",
journal = "Mineralogical Magazine",
issn = "0026-461X",
publisher = "Mineralogical Society",
number = "2",

}

TY - JOUR

T1 - ’FACE-TO-FACE’ RELATIONSHIPS BETWEEN OXOCENTERED TETRAHEDRA AND CATION-CENTRED TETRAHEDRAL OXYANIONS IN CRYSTAL STRUCTURES OF MINERALS AND INORGANIC COMPOUNDS

AU - Krivovichev, S.V.

AU - Starova, G.L.

AU - Filatov, S.K.

PY - 1999

Y1 - 1999

N2 - Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu4] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral oxyanions (T(n+)O4)(-(8-n)) with T = S6+ or V5+, or triangular pyramidal oxyanions (SeO3)2- (which may be considered as (SeO3E)2- tetrahedra assuming the lone pair E of selenium to be a fourth ligand): (T(n+)O4)(-(8-n)) tetrahedra are ’attached’ to the oxocentred tetrahedra so that their grounds (O-O-O and Cu-Cu-Cu) are parallel to each other and the mutual orientation is regular (O corners are exactly under Cu corners). We propose to describe these relationships as ’face-to-face’, meaning that the oxocentred and cation-centred tetrahedra ’meet’ along their ’whole’ triangular faces. Geometric characteristics of ’face-to-face’ relationships are discussed.

AB - Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu4] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral oxyanions (T(n+)O4)(-(8-n)) with T = S6+ or V5+, or triangular pyramidal oxyanions (SeO3)2- (which may be considered as (SeO3E)2- tetrahedra assuming the lone pair E of selenium to be a fourth ligand): (T(n+)O4)(-(8-n)) tetrahedra are ’attached’ to the oxocentred tetrahedra so that their grounds (O-O-O and Cu-Cu-Cu) are parallel to each other and the mutual orientation is regular (O corners are exactly under Cu corners). We propose to describe these relationships as ’face-to-face’, meaning that the oxocentred and cation-centred tetrahedra ’meet’ along their ’whole’ triangular faces. Geometric characteristics of ’face-to-face’ relationships are discussed.

M3 - Article

SP - 263

EP - 266

JO - Mineralogical Magazine

JF - Mineralogical Magazine

SN - 0026-461X

IS - 2

ER -