Anion-Centered Tetrahedra in Inorganic Compounds

Krivovichev, Sergey V.; Mentré, Olivier; Siidra, Oleg I.; Colmont, Marie; Филатов, С. К.

doi:10.1021/cr3004696

Cited by 210 publications

(201 citation statements)

References 637 publications

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“…The resemblance is emphasized if the arrangement is considered of oxygen-centred tetrahedra OCu 3 A (A = Te and Pb), according to the approach of Krivovichev et al (2013) BiO 4 (SO 4 ) 5 Cl, is closely associated and appears to be isostructural with nabokoite (Popova et al, 1987).…”

Section: +mentioning

confidence: 99%

A review of the structural architecture of tellurium oxycompounds

2016

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Relative to its extremely low abundance in the Earth's crust, tellurium is the most mineralogically diverse chemical element, with over 160 mineral species known that contain essential Te, many of them with unique crystal structures. We review the crystal structures of 703 tellurium oxysalts for which good refinements exist, including 55 that are known to occur as minerals. The dataset is restricted to compounds where oxygen is the only ligand that is strongly bound to Te, but most of the Periodic 4+ cations display one-sided 3-, 4-or 5-coordination by oxygen (with rare examples of coordination numbers 2 and 6). For both valence states of Te, examples are known of Te m O n complexes which are monomeric (m = 1; neso), noncyclic finite oligomers (soro), rings (cyclo), infinite chains (ino), layers ( phyllo) and frameworks (tecto tellurates). There is a clear analogy to the polymerization classes that are known for silicate anions, but the behaviour of Te is much richer than that of Si for several reasons: (1) the existence of two cationic valence states for Te; (2) the occurrence of multiple coordination numbers; (3) the possibility of edge-sharing by TeO n polyhedra; (4) the possibility for oxygen ligands to be 3-coordinated by Te; and (5) the occurrence of Te m O n polymers that are cationic, as well as neutral or anionic. While most compounds contain only one or two symmetrically distinct types of Te atom, Pauling's Fifth Rule is frequently violated, and stoichiometrically simple compounds such as CaTeO 3 can have polymorphs with up to 18 distinct Te sites. There is a tendency for local symmetry features such as the threefold axis of a TeO 6 octahedron or the acentric symmetry of a Te 4+ O n polyhedron to be inherited by the host structure; the latter in particular can lead to useful physical properties such as nonlinear optical behaviour. We develop for the first time a hierarchical taxonomy of Te-oxysalt structures, based upon (1) valence state of Te; (2) polymerization state of Te m O n complexes; (3) polymerization state of larger strongly-bound structural units that include non-Te cations. Structures are readily located and compared within this classification.

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Section: +mentioning

confidence: 99%

A review of the structural architecture of tellurium oxycompounds

2016

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“…A different approach for the structural description of Hg 5 Se 2 O 8 is the consideration of an oxygen-centered [OHg 4 ] tetrahedron. [36] The corresponding oxygen atom, O4, is solely bonded to mercury atoms, viz. two mercuric (Hg1) and two mercurous (Hg4 and Hg5) atoms.…”

Section: Special Issuementioning

confidence: 99%

“…The [O4Hg 4 ] tetrahedron is considerably distorted ( 2+ dumbbells protruding above and below these layers ( Figure 5), a structural motif unprecedented in the crystal chemistry of oxo-centered mercury compounds. [36] (Figure 4). …”

Section: Special Issuementioning

confidence: 99%

Hydrothermal Studies in the System Hg/Se/Te/O: The First Te^IV/Se^VI Oxocompounds Hg₃SeTe₂O₁₀ and Hg₃SeTe₄O₁₄, and the Mixed‐valent Hg₅Se₂O₈

Weil

Shirkanlou

2015

Zeitschrift anorg allge chemie

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“…The crystal structure of Cu 2 OSeO 3 is normally characterized in terms of copper-centered polyhedrons [13]. Here we apply the concept of anion-centered building blocks [34] which provides a rather simple description of the determined crystal structure. In this case, the minimal structural unit is composed of two corner-sharing oxygen-centered tetrahedrons [ Fig.…”

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confidence: 99%

Chirality of structure and magnetism in the magnetoelectric compound <span class="aps-inline-formula"><math><msub><mi>Cu</mi><mn>2</mn></msub><msub><mi>OSeO</mi><mn>3</mn></msub></math></span>

et al. 2014

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Small-angle diffraction of polarized neutrons and resonant contribution to diffraction of synchrotron radiation have been applied to prove chirality of the crystal and magnetic structures of the magnetoelectric insulator Cu 2 OSeO 3 . Similarly to other chiral magnets with P 2 1 3 crystal structure the corresponding chiralities are linked to each other via the phenomenological Dzyaloshinskii-Moriya interaction. The crystal and magnetic structures for Cu 2 OSeO 3 have the same chirality as is observed for MnSi, Mn 1−x Fe x Si, and MnGe. However, the combination of chiralities is opposite to that proposed from a recent theoretical consideration. The chiral link between structure and magnetism previously found for metallic compounds is also proved to exist for an insulator (Cu 2 OSeO 3 ), allowing us to conclude that the conducting electrons play no role in a possible common microscopic mechanism of this specific magnetolattice interaction.

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Anion-Centered Tetrahedra in Inorganic Compounds

Abstract: CONTENTS 6524 4.2. Bond-Length Variations 6524 4.3. Bond-Angle Variations 6524 4.4. Variations of the A•••A Distances 6524 5. Concluding Remarks 6524 Author Information 6525 Corresponding Author 6525 Notes 6525 Biographies 6525 Acknowledgments 6526 References 6526

Cited by 210 publications

References 637 publications

A review of the structural architecture of tellurium oxycompounds

A review of the structural architecture of tellurium oxycompounds

Hydrothermal Studies in the System Hg/Se/Te/O: The First Te^IV/Se^VI Oxocompounds Hg₃SeTe₂O₁₀ and Hg₃SeTe₄O₁₄, and the Mixed‐valent Hg₅Se₂O₈

Chirality of structure and magnetism in the magnetoelectric compound <span class="aps-inline-formula"><math><msub><mi>Cu</mi><mn>2</mn></msub><msub><mi>OSeO</mi><mn>3</mn></msub></math></span>

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Anion-Centered Tetrahedra in Inorganic Compounds

Abstract: CONTENTS 6524 4.2. Bond-Length Variations 6524 4.3. Bond-Angle Variations 6524 4.4. Variations of the A•••A Distances 6524 5. Concluding Remarks 6524 Author Information 6525 Corresponding Author 6525 Notes 6525 Biographies 6525 Acknowledgments 6526 References 6526

Cited by 210 publications

References 637 publications

A review of the structural architecture of tellurium oxycompounds

A review of the structural architecture of tellurium oxycompounds

Hydrothermal Studies in the System Hg/Se/Te/O: The First TeIV/SeVI Oxocompounds Hg3SeTe2O10 and Hg3SeTe4O14, and the Mixed‐valent Hg5Se2O8

Chirality of structure and magnetism in the magnetoelectric compound <span class="aps-inline-formula"><math><msub><mi>Cu</mi><mn>2</mn></msub><msub><mi>OSeO</mi><mn>3</mn></msub></math></span>

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Hydrothermal Studies in the System Hg/Se/Te/O: The First Te^IV/Se^VI Oxocompounds Hg₃SeTe₂O₁₀ and Hg₃SeTe₄O₁₄, and the Mixed‐valent Hg₅Se₂O₈