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Structural investigation of two synthetic oxyborates: The mixed magnesium-manganese and the pure cobalt ludwigites, Mg1.93(2)Mn1.07(2)O2BO3 and Co3O2BO3

Published/Copyright: August 25, 2010
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Zeitschrift für Kristallographie
From the journal Zeitschrift für Kristallographie Volume 189 Issue 1-2

Abstract

The structures of two synthetic oxyborates, the magnesium – manganese ludwigite Mg1.93Mn1.07O2BO3 and the pure cobalt ludwigite Co3O2BO3 have been investigated by single crystal X-ray diffraction techniques. The space group symmetries of both borates is Pbam, Z = 4. The unit cell dimensions are a = 9.202(2), b = 12.532(2) and c = 2.993(1) Å for the Mg – Mn borate, and a = 9.275(1), b = 12.146(1) and c = 3.0265(3) Å for the Co borate.

The structural model of the Mg – Mn ludwigite has been refined versus the 645 most significant [I > 3σ(I)] reflections with sin (θ)/λ ≤ 1.0 Å−1 to an R-value of 0.035. The results indicate the composition Mg1.93(2)Mn1.07(2)BO5. The structural model of the Co ludwigite has been refined versus the 670 most significant [I > 3σ(I)] reflections with sin (θ)/λ ≤ 0.9 Å−1 to an R-value of 0.038.

The structures obtained are well ordered and have indicated metal ion charge distributions in agreement with those found in other members of the pinakiolite family. Due to the differences in the X-ray scattering powers of the Mg and Mn atoms the scheme of the cation ordering in the Mg – Mn ludwigite could be experimentally obtained. As indicated by i.a. estimated bond valence distributions this scheme is possibly also valid for the Co ludwigite.

Published Online: 2010-08-25
Published in Print: 1989

Articles in the same Issue

  1. Structural investigation of two synthetic warwickites: Undistorted orthorhombic MgScOBO3 and distorted monoclinic Mg0.76Mn1.24OBO3
  2. A redetermination of the crystal structure of cupric chloride dihydrate
  3. Crystal data and crystal structure for silver cyclohexaphosphate monohydrate: Ag6P6O18 · H2O
  4. On the microstructure of a rapidly quenched Mn4Si alloy
  5. Structural investigation of two synthetic oxyborates: The mixed magnesium-manganese and the pure cobalt ludwigites, Mg1.93(2)Mn1.07(2)O2BO3 and Co3O2BO3
  6. Crystal chemistry of natural Mn3+-bearing calderite-andradite garnets from Otjosondu, SWA/Namibia
  7. The crystal structure of bis(sulfonylophenylo)diiodomethane, C13H10I2O4S2
  8. Crystal structure of cyclic dehydroaminoacid derivatives
  9. Structure of BaCuInF7: The interpretation between a pyrochlore-like edge-sharing network of octahedra and a defect fluorite structure
  10. The crystal structure of 5-hydroxy-7-methoxyflavanone
  11. Die Physik der nichtkristallinen Stoffe dargestellt durch Mikroparakristalle
  12. Comments on the valence rule by Nesper and von Schnering
  13. The crystal and molecular structure of 9,10-dimethylphenanthrene
  14. The crystal structure of Zr2P
  15. The crystal structure of Cu(II)-bis[1-(2-pyridinyl)-2-propanonato-N,O]
  16. A comparative study of the crystal structures of Ba(ClO3)2, Ba(BrO3)2 II, Pb(ClO3)2, and Sr(ClO3)2
  17. Crystal structure of guanidinium nitroprusside, [CN3H6]2[Fe(CN)5NO], and barium nitroprusside trihydrate, Ba[Fe(CN)5NO] · 3H2O
  18. Crystal structure refinement of Zr7P4
  19. Kristallzüchtung
  20. Classical Tessellations and Three-Manifolds
  21. Festkörperphysik. Eine Einführung in die Grundlagen
  22. Reliability in Non-Destructive Testing
  23. Alumina Extraction from Non Bauxitic Materials
  24. Crystallographic Computing 4. Techniques and New Technologies
https://doi.org/10.1524/zkri.1989.189.1-2.33

Articles in the same Issue

  1. Structural investigation of two synthetic warwickites: Undistorted orthorhombic MgScOBO3 and distorted monoclinic Mg0.76Mn1.24OBO3
  2. A redetermination of the crystal structure of cupric chloride dihydrate
  3. Crystal data and crystal structure for silver cyclohexaphosphate monohydrate: Ag6P6O18 · H2O
  4. On the microstructure of a rapidly quenched Mn4Si alloy
  5. Structural investigation of two synthetic oxyborates: The mixed magnesium-manganese and the pure cobalt ludwigites, Mg1.93(2)Mn1.07(2)O2BO3 and Co3O2BO3
  6. Crystal chemistry of natural Mn3+-bearing calderite-andradite garnets from Otjosondu, SWA/Namibia
  7. The crystal structure of bis(sulfonylophenylo)diiodomethane, C13H10I2O4S2
  8. Crystal structure of cyclic dehydroaminoacid derivatives
  9. Structure of BaCuInF7: The interpretation between a pyrochlore-like edge-sharing network of octahedra and a defect fluorite structure
  10. The crystal structure of 5-hydroxy-7-methoxyflavanone
  11. Die Physik der nichtkristallinen Stoffe dargestellt durch Mikroparakristalle
  12. Comments on the valence rule by Nesper and von Schnering
  13. The crystal and molecular structure of 9,10-dimethylphenanthrene
  14. The crystal structure of Zr2P
  15. The crystal structure of Cu(II)-bis[1-(2-pyridinyl)-2-propanonato-N,O]
  16. A comparative study of the crystal structures of Ba(ClO3)2, Ba(BrO3)2 II, Pb(ClO3)2, and Sr(ClO3)2
  17. Crystal structure of guanidinium nitroprusside, [CN3H6]2[Fe(CN)5NO], and barium nitroprusside trihydrate, Ba[Fe(CN)5NO] · 3H2O
  18. Crystal structure refinement of Zr7P4
  19. Kristallzüchtung
  20. Classical Tessellations and Three-Manifolds
  21. Festkörperphysik. Eine Einführung in die Grundlagen
  22. Reliability in Non-Destructive Testing
  23. Alumina Extraction from Non Bauxitic Materials
  24. Crystallographic Computing 4. Techniques and New Technologies
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