Home Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6
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Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6

Published/Copyright: August 25, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 193 Issue 3-4

Abstract

About 250 inorganic structure types, reported with a monoclinic centred unit cell, were tested for overlooked trigonal symmetry and the metrics of the different “best” monoclinic cells describing an hR Bravais lattice were studied. Three-fold axes were detected in the compounds listed below, for which the crystallographic data were converted to the corresponding trigonal space groups:

PtTe: hR12, R[unk]m, a = 3.963, c = 19.98 Å, Z = 6

Pt3Te4: hR21, R[unk]m, a = 3.988, c = 35.39 Å, Z = 3

Pt2Te3: hR30, R[unk]m, a = 4.003, c = 50.89 Å, Z = 6

Li8Pb3: hR33, R[unk]m, a = 4.757, c = 32.05 Å, Z = 3

LiFe6Ge4: hR33, R[unk]m, a = 5.045, c = 19.66 Å, Z = 3

LiFe6Ge5: hR72, R[unk]m, a = 5.048, c = 43.64 Å, Z = 6

CaGa6Te10: hR105-3, R32, a = 14.42, c = 17.65 Å, Z = 6

La3.266Mn1.1S6: hR165-9.3, R3m, a = 14.08, c = 21.80 Å, Z = 15

It is recommended that these data be tested in future refinements. The recently refined “monoclinic” structure of Cs4PbCl6 is shown to be identical with earlier determined trigonal Cs4PbCl6.

The structures of the Pt tellurides may be interpreted as an intergrowth of Pt2Te2 (PtTe-type) and PtTe2 (CdI2-type) layers, whereas the structure of LiFe6Ge5 contains 14 Å thick MgFe6Ge6-type slabs (alternating Zr4Al3- and CeCo3B2-type layers), stacked with a shift. In LiFe6Ge4 similar, but thinner slabs are found. CaGa6Te10 is a normal valence compound where all Ga atoms centre Te4 tetrahedra to form an anionic tetrahedron complex where each individual GaTe4 tetrahedron is connected to the surrounding tetrahedra via 6 Ga-Te-Ga links.

Published Online: 2010-8-25
Published in Print: 1990-2-1

© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München

Articles in the same Issue

  1. Mauritius Renninger (8.6.1905 – 22.12.1987)
  2. Generalized susceptibility of dislocations in ferroelectrics and ferromagnetics
  3. Microparacrystalline structure of amorphous Cd-As films
  4. Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6
  5. The crystal structure of 4-methyl pyridine at 4.5 K
  6. Kristallstruktur von [Co(C18H18N4S2)(OH2)(ONO2)](NO3) · H2O
  7. Crystal structure and spectra of dichloro-o-bromobenzoyldi-(2-pyridyl)ketonohydrazono zinc(II)
  8. Effect of non-crystallographic symmetry on cumulative distribution function: case of many parallel repetitions at random
  9. Crystal structure of sodium diphosphidoborate, Na3(BP2)
  10. Crystal structure of caesium triantimonidoaluminate, Cs6AlSb3
  11. Crystal structure of dipotassium sodium catena-diμ-arsenido-gallate, K2Na(GaAs2)
  12. Crystal structure of caesium di-μ-phosphido-bis(phosphidogallate), Cs6(Ga2P4)
  13. Crystal structure refinement of pentacarbonyliron, Fe(CO)5
  14. Crystal structure of potassium catena-di-μphosphido-niccolate, K2(NiP2)
  15. Crystal structure of potassium catena-di-μ-arsenidoniccolate, K2(NiAs2)
  16. Crystal structure of caesium diarsenidoborate, Cs3(BAs2)
  17. Crystal structure of caesium diphosphidoborate, Cs3(BP2)
  18. Crystal structure of potassium catena-di-μarsenidoaluminate di-μ-arsenido-bis(arsenidoaluminate), K12(AlAs2)2(Al2As4)
  19. Crystal structure of potassium catena-di-μphosphidoaluminate di-/μ-phosphido-bis (phosphidoaluminate), K12 (AlP2)2(Al2P4)
  20. Crystal structure of caesium di-μ-phosphido-bis(phosphidoaluminate), Cs6(Al2P4)
  21. Crystal structure of bis(tetracarbonylrhenium)-di-μphenylphosphiniden-di-μ3-phenylphosphidohexacarbonyldirhenium dichloromethane, ((CO)4Re(P(C6H5))2Re(CO)3)2(CH2Cl2)
  22. Crystal structure of μ-hydrido-μ-iodo-μ-iodo-di-μdiphenylphosphido-hexacarbonyl-triangulotrirhenium trichloromethane, (H)(I)(I)(P(C6H5)2)2(CO)6Re3(CHCl3)0.75
  23. Crystal structure of 2′,2′-dithio-2,2-bis(3′,5′-di-tertbutylphenyl)propane, C31H46S2
  24. Crystal structure of 3-(3-amino-2,4,4-tricyano-butal,3-dienyl)-indol, C15H9N5
  25. Crystal structure of β-Lithium stannide, β-LiSn
  26. Crystal structure of sodium thallium tin (5/1/3), Na5TlSn3
https://doi.org/10.1524/zkri.1990.193.3-4.217

Articles in the same Issue

  1. Mauritius Renninger (8.6.1905 – 22.12.1987)
  2. Generalized susceptibility of dislocations in ferroelectrics and ferromagnetics
  3. Microparacrystalline structure of amorphous Cd-As films
  4. Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6
  5. The crystal structure of 4-methyl pyridine at 4.5 K
  6. Kristallstruktur von [Co(C18H18N4S2)(OH2)(ONO2)](NO3) · H2O
  7. Crystal structure and spectra of dichloro-o-bromobenzoyldi-(2-pyridyl)ketonohydrazono zinc(II)
  8. Effect of non-crystallographic symmetry on cumulative distribution function: case of many parallel repetitions at random
  9. Crystal structure of sodium diphosphidoborate, Na3(BP2)
  10. Crystal structure of caesium triantimonidoaluminate, Cs6AlSb3
  11. Crystal structure of dipotassium sodium catena-diμ-arsenido-gallate, K2Na(GaAs2)
  12. Crystal structure of caesium di-μ-phosphido-bis(phosphidogallate), Cs6(Ga2P4)
  13. Crystal structure refinement of pentacarbonyliron, Fe(CO)5
  14. Crystal structure of potassium catena-di-μphosphido-niccolate, K2(NiP2)
  15. Crystal structure of potassium catena-di-μ-arsenidoniccolate, K2(NiAs2)
  16. Crystal structure of caesium diarsenidoborate, Cs3(BAs2)
  17. Crystal structure of caesium diphosphidoborate, Cs3(BP2)
  18. Crystal structure of potassium catena-di-μarsenidoaluminate di-μ-arsenido-bis(arsenidoaluminate), K12(AlAs2)2(Al2As4)
  19. Crystal structure of potassium catena-di-μphosphidoaluminate di-/μ-phosphido-bis (phosphidoaluminate), K12 (AlP2)2(Al2P4)
  20. Crystal structure of caesium di-μ-phosphido-bis(phosphidoaluminate), Cs6(Al2P4)
  21. Crystal structure of bis(tetracarbonylrhenium)-di-μphenylphosphiniden-di-μ3-phenylphosphidohexacarbonyldirhenium dichloromethane, ((CO)4Re(P(C6H5))2Re(CO)3)2(CH2Cl2)
  22. Crystal structure of μ-hydrido-μ-iodo-μ-iodo-di-μdiphenylphosphido-hexacarbonyl-triangulotrirhenium trichloromethane, (H)(I)(I)(P(C6H5)2)2(CO)6Re3(CHCl3)0.75
  23. Crystal structure of 2′,2′-dithio-2,2-bis(3′,5′-di-tertbutylphenyl)propane, C31H46S2
  24. Crystal structure of 3-(3-amino-2,4,4-tricyano-butal,3-dienyl)-indol, C15H9N5
  25. Crystal structure of β-Lithium stannide, β-LiSn
  26. Crystal structure of sodium thallium tin (5/1/3), Na5TlSn3
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