Etude de la structure cristallographique et magnetique de Cu2FeGeS4 et remarque sur la structure magnetique de Cu2MnSnS4

Wintenberger, M.

doi:10.1016/0025-5408(79)90214-9

Cited by 26 publications

(24 citation statements)

References 4 publications

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“…The average Ge-S distances are 2.240 (4) and 2.244 (5) Å for (I) and (II), respectively. These distances are also close to those of the lithium-containing DLSs: Li 2 FeGeS 4 (Brant, Devlin et al, 2015) (Wintenberger, 1979) and Cu 2 CoGeS 4 (Gulay et al, 2004) are 109.471-109.484 and 109.473-109.579 , respectively. The sulfur anions also exhibit tetrahedral coordination.…”

Section: Figuresupporting

confidence: 67%

“…Increasing the number of elements in the formula allows for greater tunability of the material's properties; thus, quaternary DLSs are a particularly appealing class of materials. As a result of their technologically relevant properties, these materials are of interest for a number of applications, such as solar cells (Ito & Nakazawa, 1988;Heppke et al, 2020;Liu et al, 2018), batteries (Brant, Devlin et al, 2015;Kaib et al, 2013) and magnetic devices (Wintenberger, 1979;Greenwood & Whitfield, 1968). Furthermore, owing to their inherently non-centrosymmetric structures, DLSs are attractive candidates for infrared nonlinear optical (IR-NLO) devices that make use of secondharmonic generation (SHG) crystals (Ohmer & Pandey 1998): only crystals that lack an inversion center can exhibit SHG.…”

Section: Chemical Contextmentioning

confidence: 99%

“…(Brunetta et al, 2013). The monovalent ions incorporated in these materials include Li (Wu, Zhang, et al, 2017;, Cu (Parthé et al, 1969) or Ag (Brunetta et al, 2013) and the divalent ions include a number of metals, such as Mg (Liu et al, 2013), Mn (Bernert & Pfitzner, 2005), Fe (Wintenberger, 1979), Co (Bernert and Pfitzner 2006), Zn (Parasyuk et al, 2001), Cd (Rosmus et al, 2014) and Hg (Olekseyuk et al, 2005). The tetravalent ions found in these compounds are usually Si, Ge, or Sn, while the hexavalent atoms (i.e., the divalent anions) can be S (Lekse et al, 2009), Se (Gulay, Romanyuk & Parasyuk, 2002), or Te (Parasyuk et al, 2005).…”

Section: Figurementioning

confidence: 99%

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Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

et al. 2020

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The quaternary thiogermanates Cu4FeGe2S7 (tetracopper iron digermanium heptasulfide) and Cu4CoGe2S7 (tetracopper cobalt digermanium heptasulfide) were prepared in evacuated fused-silica ampoules via high-temperature, solid-state synthesis using stoichiometric amounts of the elements at 1273 K. These isostructural compounds crystallize in the Cu4NiSi2S7 structure type, which can be considered as a superstructure of cubic diamond or sphalerite. The monovalent (Cu+), divalent (Fe2+ or Co2+) and tetravalent (Ge4+) cations adopt tetrahedral geometries, each being surrounded by four S2− anions. The divalent cation and one of the sulfide ions lie on crystallographic twofold axes. These tetrahedra share corners to create a three-dimensional framework structure. All of the tetrahedra align along the same crystallographic direction, rendering the structure non-centrosymmetric and polar (space group C2). Analysis of X-ray powder diffraction data revealed that the structures are the major phase of the reaction products. Thermal analysis indicated relatively high melting temperatures, near 1273 K.

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Section: Figuresupporting

confidence: 67%

Section: Chemical Contextmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

et al. 2020

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“…For details on synthetic stannite group phases, see: Salomé et al (2012); Sasamura et al (2012); Tsuji et al 2010). For other stannite group minerals, see: Chen et al (1998); Frenzel (1959); Garin & Parthé (1972); Johan et al (1971); Kaplunnik et al (1977); Kissin & Owens (1989); Marumo & Nowaki (1967); Murciego et al (1999); Szymań ski (1978); Wintenberger (1979). Frenzel (1959) Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Xtal-Draw (Downs & Hall-Wallace, 2003); software used to prepare material for publication: publCIF (Westrip, 2010).…”

Section: Related Literaturementioning

confidence: 99%

Pirquitasite, Ag₂ZnSnS₄

Schumer¹,

Downs²,

Domanik³

et al. 2013

Acta Cryst E

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Pirquitasite, ideally Ag2ZnSnS4 (disilver zinc tin tetrasulfide), exhibits tetragonal symmetry and is a member of the stannite group that has the general formula A2BCX 4, with A = Ag, Cu; B = Zn, Cd, Fe, Cu, Hg; C = Sn, Ge, Sb, As; and X = S, Se. In this study, single-crystal X-ray diffraction data are used to determine the structure of pirquitasite from a twinned crystal from the type locality, the Pirquitas deposit, Jujuy Province, Argentina, with anisotropic displacement parameters for all atoms, and a measured composition of (Ag1.87Cu0.13)(Zn0.61Fe0.36Cd0.03)SnS4. One Ag atom is located on Wyckoff site Wyckoff 2a (symmetry -4..), the other Ag atom is statistically disordered with minor amounts of Cu and is located on 2c (-4..), the (Zn, Fe, Cd) site on 2d (-4..), Sn on 2b (-4..), and S on general site 8g. This is the first determination of the crystal structure of pirquitasite, and our data indicate that the space group of pirquitasite is I-4, rather than I-42m as previously suggested. The structure was refined under consideration of twinning by inversion [twin ratio of the components 0.91 (6):0.09 (6)].

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“…There are numerous minerals with the M II M IV S 4 composition that are derived from the sphalerite structure by ordered substitution of Zn. These are divided into the stannite group (space group I 2 m ) with briartite, Cu 2 (Fe,Zn)GeS 4 (Wintenberger 1979, synthetic), černýite, Cu 2 CdSnS 4 (Szymanski et al , 1978), stannite, Cu 2 FeSnS 4 (Hall et al , 1978) and velikite, Cu 2 HgSnS 4 (Kaplunik et al , 1977), and the kësterite subgroup (space group I ) with ferrokësterite, Cu 2 FeSnS 4 (Kissin and Owens, 1989), hocartite, Ag 2 FeSnS 4 (Caye et al , 1968, structure not solved), kësterite, Cu 2 ZnSnS 4 (Hall et al , 1978), pirquitasite, Ag 2 ZnSnS 4 (Schumer et al , 2013) and zincobriartite, Cu 2 (Zn,Fe)(Ge,Ga)S 4 (McDonald et al , 2016). The two subgroups have two distinct but closely related patterns of ordered substitution of the Zn atoms in sphalerite.…”

Section: Introductionmentioning

confidence: 99%

Agmantinite, Ag2MnSnS4, a new mineral with a wurtzite derivative structure from the Uchucchacua polymetallic deposit, Lima Department, Peru

Keutsch

Topa

Fredrickson

et al. 2018

MinMag

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Agmantinite, ideally Ag2MnSnS4, is a new mineral from the Uchucchacua polymetallic deposit, Oyon district, Catajambo, Lima Department, Peru. It occurs as orange–red crystals up to 100 μm across. Agmantinite is translucent with adamantine lustre and possesses a red streak. It is brittle. Neither fracture nor cleavage were observed. Based on the empirical formula the calculated density is 4.574 g/cm3. On the basis of chemically similar compounds the Mohs hardness is estimated at between 2 to 2½. In plane-polarised light agmantinite is white with red internal reflections. It is weakly bireflectant with no observable pleochroism with red internal reflections. Between crossed polars, agmantinite is weakly anisotropic with reddish brown to greenish grey rotation tints. The reflectances (Rmin and Rmax) for the four standard wavelengths are: 19.7 and 22.0 (470 nm); 20.5 and 23.2 (546 nm); 21.7 and 2.49 (589 nm); and 20.6 and 23.6 (650 nm), respectively.Agmantinite is orthorhombic, space group P21nm, with unit-cell parameters: a = 6.632(2), b = 6.922(2), c = 8.156(2) Å, V = 374.41(17) Å3, a:b:c 0.958:1:1.178 and Z = 2. The crystal structure was refined to R = 0.0575 for 519 reflections with I > 2σ(I). Agmantinite is the first known mineral of ${M}_{\rm 2}^{\rm I} $MIIMIVS4 type that is derived from wurtzite rather than sphalerite by ordered substitution of Zn, analogous to the substitution pattern for deriving stannite from sphalerite. The six strongest X-ray powder-diffraction lines derived from single-crystal X-ray diffraction data [d in Å (intensity)] are: 3.51 (s), 3.32 (w), 3.11 (vs), 2.42 (w), 2.04 (m) and 1.88 (m). The empirical formula (based on 8 apfu) is (Ag1.94Cu0.03)Σ1.97(Mn0.98Zn0.05)Σ1.03Sn0.97S4.03.The crystal structure-derived formula is Ag2(Mn0.69Zn0.31)Σ1.00SnS4 and the simplified formula is Ag2MnSnS4.The name is for the composition and the new mineral and mineral name have been approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification (IMA2014-083).

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Etude de la structure cristallographique et magnetique de Cu2FeGeS4 et remarque sur la structure magnetique de Cu2MnSnS4

Cited by 26 publications

References 4 publications

Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

Pirquitasite, Ag₂ZnSnS₄

Agmantinite, Ag2MnSnS4, a new mineral with a wurtzite derivative structure from the Uchucchacua polymetallic deposit, Lima Department, Peru

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Etude de la structure cristallographique et magnetique de Cu2FeGeS4 et remarque sur la structure magnetique de Cu2MnSnS4

Cited by 26 publications

References 4 publications

Syntheses and crystal structures of the quaternary thiogermanates Cu4FeGe2S7and Cu4CoGe2S7

Syntheses and crystal structures of the quaternary thiogermanates Cu4FeGe2S7and Cu4CoGe2S7

Pirquitasite, Ag2ZnSnS4

Agmantinite, Ag2MnSnS4, a new mineral with a wurtzite derivative structure from the Uchucchacua polymetallic deposit, Lima Department, Peru

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Product

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Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

Syntheses and crystal structures of the quaternary thiogermanates Cu₄FeGe₂S₇and Cu₄CoGe₂S₇

Pirquitasite, Ag₂ZnSnS₄