The crystal structure of a new polytype 12R of cadmium bromide

Sharma, S.; Sharma, Govind; Agrawal, Veena

doi:10.1107/s0567740880002373

Cited by 6 publications

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References 1 publication

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“…According to the bond valence-state (BVS) calculation, 39,40 the oxidation states for Cd, Sn, S, and X are 2+, 2+, 2−, and 1−, respectively (Table 2). As shown in Figure 3, the crystal structures of CdSnSX 2 (X = Cl or Br) can be simply regarded as an "insertion" of the [CdX 2 ] lattice 41,42 (Figure 3a) into the [SnS] lattice 43 (Figure 3b). The [CdX 2 ] sublattice is built by a single octahedral chain of Cdcentered [CdX 4 S 2 ] groups via sharing cis-X edges, while the [SnS] sublattice consists of a bend-shaped chain of unusual [SnS 2 X 2 ] units by sharing vertices of S atoms.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

et al. 2021

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Inorganic chalcohalides are attracting a tremendous amount of attention because of their remarkable structural variety and desirable physical properties. Although great advances have been made in recent years, functional inorganic chalcohalides with two-dimensional neutral layers are still rare. Herein, two novel chalcohalides CdSnSX 2 (X = Cl or Br) with high yields were obtained by reacting CdX 2 with SnS using a traditional solid-state method at 823 K. Both of these chalcohalides adopt orthorhombic space group Cmcm (No. 63) with the following structural values: a = 4.014(4)−4.064(2) Å, b = 12.996(2)−13.746(3) Å, c = 9.471(2)−9.621(2) Å, V = 494.1(8)−537.5(2) Å 3 , and Z = 4. The prominent architectural feature is the unique two-dimensional [CdSnSX 2 ] neutral layer consisting of composite [CdX 2 ] and [SnS] sublattices that are connected alternately through the Cd−S−Sn bonds along the ac plane. The [CdX 2 ] sublattice consists of a single octahedral chain of Cd-centered [CdX 4S 2 ] groups sharing cis-X edges, while the [SnS] sublattice consists of a bend-shaped chain of unusual [SnS 2 X 2 ] units sharing vertices of S atoms. Significantly, each CdSnSX 2 form (X = Cl or Br) shows high visible-light-induced photocatalytic activity for rhodamine B degradation, which is ∼7.0 times higher than that of nitrogen-doped TiO 2 (TiO 2−x N x ) under the same experimental conditions. This discovery enriches the categories of inorganic chalcohalides and provides more choices of candidate materials for photocatalytic applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

et al. 2021

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“…1) [1,2]. Its crystal structure is rhombohedra and it belongs to the space group D 5 3d [1,2]. Because there are good transparent and dielectric characteristics of CdBr 2 crystal, various theoretical and experimental methods were used to study its physical and chemical properties and microstructure [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Explanation of the Optical Spectra and Spin-Hamiltonian Parameters for Nickel(II) in Cadmium Bromide Crystal

et al. 2011

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Based on crystal-and ligand-field theory, double-spin-orbital coupling approach was used to analyze the crystal-field energy levels and spin-Hamiltonian parameters of Ni 2+ ion at trigonal site in CdBr 2 . The local lattice distortion (∆R and τ Ni 2+ ) is estimated from the crystal field parameters; the crystal field energy Hamiltonian was diagonalized in the full basis consisting of 45 wave functions of the Ni 2+ ion. Results of calculations are in good agreement with experimental data. The reasonableness of the theoretical results is discussed.

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Reasons for polytypism of crystals of the type MX2 II. Clasification of faults and structural series of polytypes; Conditions of polytypic growth of CdI2, PbI2, CdBr2, SnS2, SnSe2 and Ti1.2S2

Pałosz

1983

Phys. Stat. Sol. (a)

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The crystal structure of a new polytype 12R of cadmium bromide

Cited by 6 publications

References 1 publication

Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

Explanation of the Optical Spectra and Spin-Hamiltonian Parameters for Nickel(II) in Cadmium Bromide Crystal

Reasons for polytypism of crystals of the type MX2 II. Clasification of faults and structural series of polytypes; Conditions of polytypic growth of CdI2, PbI2, CdBr2, SnS2, SnSe2 and Ti1.2S2

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The crystal structure of a new polytype 12R of cadmium bromide

Cited by 6 publications

References 1 publication

Quaternary Chalcohalides CdSnSX2 (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

Quaternary Chalcohalides CdSnSX2 (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

Explanation of the Optical Spectra and Spin-Hamiltonian Parameters for Nickel(II) in Cadmium Bromide Crystal

Reasons for polytypism of crystals of the type MX2 II. Clasification of faults and structural series of polytypes; Conditions of polytypic growth of CdI2, PbI2, CdBr2, SnS2, SnSe2 and Ti1.2S2

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Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties

Quaternary Chalcohalides CdSnSX₂ (X = Cl or Br) with Neutral Layers: Syntheses, Structures, and Photocatalytic Properties