1314-97-2Relevant academic research and scientific papers
S Kβ x-ray fluorescence spectra of the Tl2S-Sb2S3 chalcogenide system
Dupont,Gheorghiu,Senemaud,Mariot,Hague,Lippens,Olivier-Fourcade,Jumas
, p. 8421 - 8428 (1996)
The sulphur 3p valence states of Sb2S3, Tl3SbS3, TlSbS2, TlSb3S5, TlSb5S8, and Tl2S of the Tl2S-Sb2S3 system hav
ORTHO-THIOBORATES AND ORTHO-SELENOBORATES: SYNTHESIS, STRUCTURE AND PROPERTIES OF Tl3BS3 AND Tl3BSe3.
Krebs,Hamann
, p. 143 - 154 (1988)
Tl//3BS//3 and Tl//3BSe//3 were prepared as black crystalline phases by reaction of stoichiometric amounts of the elements at 800-950 degree C and subsequent annealing at 400-200 degree C. They are the first orthothio- and orthoselenoborates which have been characterized. According to single-crystal structure analyses, they contain trigonal planar BS//3**3** minus (B-S bond length 1. 83 A) and BSe//3**3** minus groups (B-Se bond length 1. 95 A). There are two structurally different thallium atoms in the structure with irregular 6 plus 1- or 6 plus 2-coordination by sulfur (selenium), the inert electron pair at Tl** plus showing strong stereochemical activity. The crystal structures of 1 and 2 are isotypic to each other but not isotypic to any other M//3AB//3 structure.
Electronic properties of the crystalline phases of the Sb2S3-Tl2S system
Lippens,Olivier-Fourcade,Jumas,Gheorghiu,Dupont,Senemaud
, p. 13054 - 13065 (1997)
The electronic properties of the crystalline phases of the Sb2S3-Tl2S system are investigated both experi-mentally and theoretically. Experimental data obtained by x-ray photoelectron spectroscopy and 121Sb Moes
INCORPORATION OF Tl IN MONOCRYSTALLINE n-PbS.
Klimakow,Schenk,Christ
, p. 573 - 578 (1986)
The incorporation of Tl in monocrystalline n-PbS was studied on PbS annealed under various Tl vapor pressures and on vapor-grown PbS:Tl//2S crystals by measuring the surface concentration and in-depth distribution of thallium as well as the lattice parameter and carrier concentration. The Tl in annealed samples increases and the lattice parameter diminishes proportionally to the Tl vapor pressure. The penetration plots of Tl in PbS at 650 degree C in the concentration range up to 1 at% follow an erfc law. A model explaining the anomalous behavior of the lattice parameter and high self-compensation in PbS:Tl is proposed.
Thermodynamic properties and homogeneity regions of Tl6SCl 4 and Tl5Se2Cl
Guseinov,Babanly,Sadygov,Babanly
, p. 129 - 134 (2009)
In this activity system Tl-Tl2X-X (X = S, Se)are studied using emf measurements of concentration chains relative thallic electrode. The solid phase diagrams of these systems are clarified, homogeneity areas of the compounds Tl6SClsu
Quaternary chalcogenides of the IVa metals with layered structures: Preparation and crystal structures of TlCuTIV Q3 (T = Zr, Hf; Q = S, Se) and their relation to the Re3B structure type
Klepp, Kurt O.,Gurtner, Doris
, p. 6 - 11 (1996)
The new compounds TlCuTIVQ3 (T = Zr, Hf; Q = S, Se) were prepared by reacting intimate mixtures of Tl2S or TlSe with stoichiometric amounts of the corresponding Group IV metal, Cu and the corresponding chalcogen at 870°C. The four compounds are isostructural and crystallize in Cmcm, Z = 4 with a = 3.726(4) A, b = 13.987(9) A, c = 9.783(4) A for TlCuZrS3; a = 3.847(1) A, b = 14.381(6) A, c = 10.150(1) A for TlCuZrSe3; a = 3.694(1) A, b = 14.030(3) A, c = 9.750(3) A for TlCuHfS3; and a = 3.831(1) A, b = 14.409(9) A, c = 10.124(2) A for TlCuHfSe3. Their crystal structures were determined from single crystal diffractometer data (Mo Kα radiation, ambient temperature) and refined to conventional R values of 0.016, 0.040, 0.019 and 0.031 respectively. An outstanding feature of their crystal structures is the formation of infinite anionic layers, 2∞-[CuTIVQ3]- parallel to (010), which are separated by Tl+ cations. These layers are built up by edge sharing TQ6 octahedra and distorted CuQ4 tetrahedra. Average T-Q distances are d(Zr-S) = 2.586(1) A, d(Zr-Se) = 2.707(1) A, d(Hf-S) = 2.569(2) A and d(Hf-Se) = 2.694(1) A. Cu-chalcogen distances are d(Cu-S) = 2.318(2) A and d(Cu-Se) = 2.432(3) A respectively. The thallium ions are in bicapped trigonal prismatic chalcogen coordinations. The atomic arrangement corresponds to that of KCuZrS3; based on the thallium-chalcogen partial structure it can be regarded as a filled variant of an anti-Re3B structure type.
The effect of KI on the formation of Tl2E (E = S, Se) nanorods via solvothermal route
Ni, Youbao,Shao, Mingwang,Wu, Zhengcui,Gao, Feng,Wei, Xianwen
, p. 297 - 300 (2004)
Tl2E (E=S or Se) nanorods were synthesized via solvothermal route with the addition of KI. The products were characterized with X-ray powder diffraction patterns and transmission electron microscope images. Their optical properties were studied by UV-vis transmittance and photoluminescence spectrum. The band gap of direct forbidden transitions was found larger than that of bulk materials, because of the blue shift caused by nanometer-scale crystalline particles due to quantum confinement effects. A possible growth mechanism is proposed.
Two new examples of very short thallium-transition metal contacts: Tl3Ag3Sb2S6 and Tl3Ag3As2S6
Karanovi?, Ljiljana,Poleti, Dejan,Bali?-?uni?, Ton?i,Makovicky, Emil,Gr?eti?, Ivan
, p. 66 - 74 (2008)
Two new sulphosalts Tl3Ag3Sb2S6, (1) and Tl3Ag3As2S6, (2) were prepared in reaction of synthetic binary sulfides: argentite (Ag2S), carlinite (Tl2S) and orpiment (As2S3) or stibnite (Sb2S3), and their crystal structures have been determined using single-crystal data. The compounds are isostructural and crystallize in the space group P21/c (Z = 4), with a = 11.6854(17) ?, b = 11.8602(17) ?, c = 12.1294(18) ?, β = 123.356(2)°, V = 1404.1(4) ?3 for 1, and a = 11.4415(14) ?, b = 11.7530(15) ?, c = 11.9880(16) ?, β = 123.516(3)°, V = 1344.0(3) ?3 for 2. Refinements involving anisotropic displacement parameters for all atoms converged to the conventional R-factors: R1 = 0.0496 for 1 and R1 = 0.0372 for 2. The structures consist of two kinds of slabs alternately situated along [1 0 0] direction and sharing S atoms located between them. The first slab is built up of Tl1S8, Tl2S6, Tl3S5Ag3 coordination polyhedra and Ag3S3Tl3 distorted trigonal pyramid (the average 〈Ag3-S〉 distance is 2.542 for 1 and 2.539 ? for 2) combined with trigonal Sb1S3 or As1S3 coordination pyramids (〈Sb1-S〉 and 〈As1-S〉 are 2.438 and 2.259 ?, respectively). The thallium atom Tl1 is surrounded by eight S atoms forming a square anti-prism (〈Tl1-S〉: 3.393 for 1 and 3.356 ? for 2), while the coordination polyhedron of Tl2 can be described as a significantly distorted trigonal prism or as an extremely distorted octahedron (〈Tl2-S〉: 3.236 ? for 1 and 3.238 ? for 2). Thallium Tl3 is surrounded by six atoms (one Ag, four S at shorter and one S at longer distance), which form a distorted trigonal prism (〈Tl3-S〉: 3.165 ? in 1 and 3.155 ? in 2). The second slab consists of trigonal Sb2S3 or As2S3 coordination pyramids combined with Ag1S4 and Ag2S4 coordination tetrahedra (〈Sb2-S〉 and 〈As2-S〉 are 2.433 and 2.251 ?, respectively; 〈Ag1-S〉: 2.623 ? for 1 and 2.612 ? for 2; 〈Ag2-S〉: 2.623 ? for 1 and 2.630 ? for 2). The most interesting feature of both structures is the existence of short Tl3-Ag3 contacts of 2.959(2) ? in 1 and 2.922(1) ? in 2. These contacts are the shortest found so far and indicate very strong Tl-Ag interactions. They are discussed in terms of metallophilicity principle and relativistic effects. It is also pointed out that if only valence shell electrons are considered (Tl-Ag)2+ group is isoelectronic with the (Hg-Hg)2+ ion, therefore new examples of short Tl-Ag contacts could be expected.
Raman spectroscopic study of the ternary system Sb2S3-As2S3-Tl2S
El Idrissi Raghni,Bonnet,Hafid,Olivier-Fourcade,Jumas
, p. 7 - 11 (1997)
Raman spectroscopy has been used to study the local structure in glassy compositions of the ternary system As2S3-Sb2S3-Tl2S. The evolution of the positions and shapes of the bands observed is attribut
Tl2S-Sb2S3-Bi2S3 quasi-ternary system
Dzhafarov, Ya. I.,Babanly
, p. 1839 - 1843 (2009)
The Tl2S-Sb2S3-Bi2S3 quasi-ternary system (system A) was studied using DTA, X- ray powder diffraction, microstructure examination, and microhardness measurements. TlSbS2-Tl4Bisu
