Molten salt synthesis of low-dimensional ternary chalcogenides. Novel structure types in the K/Hg/Q system (Q = S, Se)

Kanatzidis, Mercouri G.; Park, Younbong

doi:10.1021/cm00008a006

Cited by 85 publications

(65 citation statements)

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“…Noteworthy, while compound 1 is isostructural to the corresponding mercury compound, 3 differs from K 2 Hg 3 Se 4 . In K 2 Hg 3 Se 4 the anionic structure is built by one‐dimensional [Hg 3 Se 4 ] 2– strands that consist of distorted [HgSe 4 ] tetrahedra connected by two Hg 2+ ions.…”

Section: Resultsmentioning

confidence: 99%

“…The resulting ternary solid phases usually show a blue shift of their bandgaps, in some cases accompanied by luminescence properties. This way it is possible to create photoconducting and light emitting materials with a great application potential , …”

Section: Introductionmentioning

confidence: 99%

“…A variety of ternary compounds of the elemental combination A /Hg/ E ( A = alkali metal, E = S or Se) have been known. They exhibit a great diversity of anionic structural motifs and do show photoconductivity , . However, in contrast to the multitude of chalcogenidomercurates, corresponding chalcogenidocadmates are rare, especially with Se as the chalcogen.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Structures of Compounds with Molecular, One‐Dimensional, or Two‐Dimensional Selenidocadmate Anions

Nußbruch

Dehnen

2018

Zeitschrift anorg allge chemie

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Three new ternary selenidocadmates, K6[CdSe4] (1), K2[CdSe2] (2), and K2[Cd3Se4] (3), were synthesized and isolated upon fusion of K2Se and CdSe in respective stoichiometric amounts, followed by aminothermal treatment with 1,2‐diaminoethane. The anionic substructures range from molecules (0D, 1) through strands (1D, 2) to layered motifs (2D, 3). Compound 1 is isostructural to the corresponding mercury compound, K6[HgSe4], whereas the structure of 3 was previously predicted according to powder diffraction data, and could now be confirmed. The 1D chains in the anion of 2 represent a novel anionic architecture for this class of compounds. Determination of optical absorption properties confirm the expected decrease of the onset‐of‐absorption energies with increasing dimensionality of the anionic structures along the series of compounds. The structures of 1–3 were determined by means of single‐crystal Xray diffraction, and the heavy‐atom composition of the compounds was confirmed by micro Xray fluorescence spectroscopy (μ‐XFS).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Structures of Compounds with Molecular, One‐Dimensional, or Two‐Dimensional Selenidocadmate Anions

Nußbruch

Dehnen

2018

Zeitschrift anorg allge chemie

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“…A 2 HgS 2 (A = Na, K) possess nearly linear HgS 2 units with alkali-metal cations occupying the voids (Klepp & Prager, 1992). The compounds Na 2 Hg 3 S 4 (Klepp, 1992) and K 2 Hg 3 S 4 (Kanatzidis & Park, 1990) feature infinite [Hg 3 S 4 ] 2-units parallel to (100) separated by alkali-metal cations. K 2 Hg 6 S 7 has a three-dimensional mercury sulfide network composed of two types of channels, with the potassium cations occupying the spaces in the larger-diameter channels (Kanatzidis & Park, 1990).…”

Section: S1 Commentmentioning

confidence: 99%

“…The compounds Na 2 Hg 3 S 4 (Klepp, 1992) and K 2 Hg 3 S 4 (Kanatzidis & Park, 1990) feature infinite [Hg 3 S 4 ] 2-units parallel to (100) separated by alkali-metal cations. K 2 Hg 6 S 7 has a three-dimensional mercury sulfide network composed of two types of channels, with the potassium cations occupying the spaces in the larger-diameter channels (Kanatzidis & Park, 1990). Hg1 is four-coordinate with a distorted tetrahedral geometry and Hg2 is three-coordinate with a T-shaped planar geometry.…”

Section: S1 Commentmentioning

confidence: 99%

Dicaesium hexamercury heptasulfide

Bugaris¹,

Ibers²

2008

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 215 K; mean (Hg-S) = 0.005 Å; R factor = 0.034; wR factor = 0.082; data-to-parameter ratio = 22.2.The title compound, Cs 2 Hg 6 S 7 , crystallizes in a new structure type that is closely related to that of K 2 Zn 6 O 7 . The structure comprises a three-dimensional mercury sulfide network that is composed of channels. These channels, which are along [001], are of two different diameters. The crystal structure contains one Cs, two Hg, and three S atoms in the asymmetric unit. The Cs, one Hg, and one S atom are at sites of symmetry m, whereas a second S atom is at a site of symmetry 2mm. The Hg atoms are bound to the S atoms in both three-and fourcoordinate geometries. The caesium cations occupy the central spaces of the larger diameter channels and exhibit a coordination number of 7. Related literature ExperimentalCrystal data

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Chalcogenides: Solid‐State ChemistryBased in part on the article Chalcogenides: Solid State Chemistry by Patricia M. Keane which appeared in theEncyclopedia of Inorganic Chemistry, First Edition.

Kanatzidis

2005

Encyclopedia of Inorganic Chemistry

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This article deals with the solid‐state chemistry of chalcogenides and describes mainly the developments during the past decade. The article is not exhaustive but is meant to give a broad set of examples of interesting compounds and solid‐state chemistry of these compounds so that the reader can obtain a reasonable and rounded view of the recent activities in this area. Further depth and additional information can be obtained from the available references.

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Molten salt synthesis of low-dimensional ternary chalcogenides. Novel structure types in the K/Hg/Q system (Q = S, Se)

Cited by 85 publications

References 0 publications

Synthesis and Structures of Compounds with Molecular, One‐Dimensional, or Two‐Dimensional Selenidocadmate Anions

Synthesis and Structures of Compounds with Molecular, One‐Dimensional, or Two‐Dimensional Selenidocadmate Anions

Dicaesium hexamercury heptasulfide

Chalcogenides: Solid‐State ChemistryBased in part on the article Chalcogenides: Solid State Chemistry by Patricia M. Keane which appeared in theEncyclopedia of Inorganic Chemistry, First Edition.

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