Preparation and Crystal Structure of MnBiS2Br

Abstract

Summary. Black single crystals of MnBiS 2 Br were obtained by the reaction of stoichiometric amounts of -MnS, Bi, S, and BiBr 3 (3:2:3:1) at 600 C for 4 weeks. The compound crystallises in the monoclinic system, space group C2=m, with a ¼ 12.767(2), b ¼ 3.9468(4), c ¼ 9.574(1) Å , ¼ 90.87(2) , and Z ¼ 4. The crystal structure refinement based on 720 reflections converged at R ¼ 0.0244 and wR2 ¼ 0.0579, respectively. MnBiS 2 Br forms a layer structure consisting of MnS 6 octahedra, MnS 2 Br 4 octahedra, and BiS 3þ2 pyramids.

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

“…The title compounds CdSnSX 2 (X = Cl or Br) together with other known quaternary TM II /M/Q/X (TM II = Fe, Mn, Zn, Cd, or Hg; M = metal elements containing SCALPs; Q = chalcogenides; X = halogen) chalcohalides − are summarized in Table and Figures S2–S7. These chalcohalides can be divided into nine types according to their different stoichiometries as follows: 1-6-8-4 type (found in only CdSb 6 S 8 I 4 ), 4-1-2-5 type (only two examples, Hg 4 BiS 2 Cl 5 and Hg 4 BiSe 2 Cl 5 ), 1-1-1-2 type (including three compounds, e.g., HgSnSBr 2 ), 3-1-4-1 type (adopted by four compounds, e.g., Hg 3 AsS 4 Cl), 3-2-2-8 type (including three compounds, e.g., Hg 3 Bi 2 Te 2 Cl 8 ), 1-2-3-2 type (found in only CdSb 2 Se 3 Br 2 ), 1-1-2-1 type (involving ∼16 compounds, e.g., CdSbS 2 Cl and CdBiSe 2 I), 2-1-2-2 type (found in only Hg 2 PbS 2 I 2 ), and 1-4-6-2 type (discovered in only HgBi 4 S 6 Cl 2 ).…”

“…Recently, the focus of our research has been the quaternary TM II /M/Q/X [TM II = divalent transition metals; M = metal elements containing stereochemically active lone pairs (SCALPs); Q = chalcogenides; X = halogen] system, with a goal of discovering new functional heteroanionic materials. From the literature survey results, − the SCALP-based element primarily contains group 15 metals (such as As 3+ , Sb 3+ , and Bi 3+ ) ,,− and studies of the structure of group 14 metals (such as Sn 2+ and Pb 2+ ) are lacking. The existing examples are limited to Hg 2 SnS 2 Br 2 and Hg 2 PbS 2 I 2 …”

Preparation and Crystal Structure of MnBiSe2I.

“…At the moment MnBiS 2 Br is under investigation and this compound is also isotypic with MnBiSe 2 I and MnSbSe 2 I, due to similarly long bonds Mn-Br as compared to Mn-S. In this case the monoclinic angle β ϭ 90.87°is even closer to 90°than in MnBiSe 2 I [13].…”

FeBiS2Cl – A new iron-containing member of the MPnQ 2 X family

“…There is a small variety of compounds of the general formula MPnQ 2 X with M = transition metal, Pn = pnictide, Q = chalcogenide, and X = halide [1][2][3][4][5][6][7]. Looking at sulfur as the chalcogenide, different combinations of elements from the other groups have been synthesized, using manganese or cadmium as the bivalent transition metal, antimony or bismuth as the pnictide, and chlorine or bromine as the halide.…”

“…Looking at sulfur as the chalcogenide, different combinations of elements from the other groups have been synthesized, using manganese or cadmium as the bivalent transition metal, antimony or bismuth as the pnictide, and chlorine or bromine as the halide. While the sulfochlorides MnBiS 2 Cl [1], MnSbS 2 Cl [2], CdBiS 2 Cl [3], and CdSbS 2 Cl [3] all crystallize in the orthorhombic space group Pnma, the corresponding sulfobromides [3][4][5] exhibit the monoclinic space group C2/m. However, with iron as the transition metal, only the sulfobromides [8] but not the sulfochlorides are known.…”