Startseite Naturwissenschaften Zn3Pt9B4, Ga2,7Ir9B5 und Ga3Pt9B4, Zink- und Gallium-Übergangsmetallboride mit neuen Kanalstrukturen
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Zn3Pt9B4, Ga2,7Ir9B5 und Ga3Pt9B4, Zink- und Gallium-Übergangsmetallboride mit neuen Kanalstrukturen

Veröffentlicht/Copyright: 28. Juli 2010
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Zeitschrift für Kristallographie - Crystalline Materials
Aus der Zeitschrift Zeitschrift für Kristallographie - Crystalline Materials Band 209 Heft 2

Abstract

The new compounds Zn3Pt9B4, Ga2.7Ir9B5, and Ga3Pt9B4 were prepared by reaction of the elements at 1373 K. Their crystal structures were determined by means of single crystal X-ray methods. In the case of Zn3Pt9B4, powder neutron diffraction was applied in addition. Zn3Pt9B4 [hexagonal, P[unk]2m; a = 911.11(6) pm; c = 286.00(3) pm; Z = 1; 491 reflexions; 20 parameters; R = 0.023] and Ga2.7Ir9B5 [hexagonal, P[unk]2m; a = 904.65(9) pm; c = 287.03(2) pm; Z = 1; 412 reflexions; 20 parameters; R = 0.039] crystallize with a new structure. Trigonal transition metal prisms partly centered by boron atoms are arranged to form channels with pentagonal cross sections containing rows of zink and gallium atoms respectively. In the structure of Zn3Pt9B4 one of the boron sites has an occupation parameter of 0.5. Ordering of the vacancies in Ga3Pt9B4 [hexagonal, P[unk]2c; a = 875.03(1) pm; c = 637.42(1) pm; Z = 2; 991 reflexions; 26 parameters; R = 0.052] results in a variant of the structure with doubled lattice constant c and a zig-zag chain of gallium atoms within the channel.

Published Online: 2010-7-28
Published in Print: 1994-2-1

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

Artikel in diesem Heft

  1. The effective shapes and sizes of Cu2+ and Mn3+ ions in oxides and fluorides
  2. Determination of cation distributions by anomalous dispersion
  3. The NaAlSiO4 nepheline-carnegieite solid-state transformation
  4. Dielectric, pyroelectric, piezoelectric and optical investigation of the phase transition sequence in BaZnGeO4
  5. Anisotropy of anomalous scattering in X-ray diffraction. ‘Forbidden’ axial reflections in tetragonal space groups
  6. Growth and dissolution morphology of Ge crystals formed in GeI2-GeI4 vapor mixtures
  7. Ab initio direct phasing of proteins: the limits
  8. Rutile type derivatives
  9. Zn3Pt9B4, Ga2,7Ir9B5 und Ga3Pt9B4, Zink- und Gallium-Übergangsmetallboride mit neuen Kanalstrukturen
  10. Bestimmung der Strukturen von Ba(OH)Cl, Ba(OD)Cl und Ba(OD)Br durch Röntgeneinkristall- und Neutronenpulver-Messungen
  11. Kristallzüchtung und Einkristallstrukturverfeinerungen der Rhodium(III)-phosphate RhPO4 und RhP3O9
  12. Crystal and molecular structure of bis(3-cyano-2,4 pentanedionato)-bis(N,N-dimethylethylenediamine)copper(II). An unusual conformation and co-ordination of a β-dione
  13. Electro-optic and electrostrictive properties of the complex thiosulphates (NH4)9[Cu(S2O3)4]Br2, (NH4)9[Cu(S2O3)4]I2, and (NH4)9[Ag(S2O3)4]Br2
  14. Structures of the trans and cis isomers of 3,5-dioxo-3,5-diisopropoxy-1,3,5-thiadiphosphorinane
  15. Crystal structure of rubidium pentanitrato-scandate(III), Rb2Sc(NO3)5
  16. Crystal structure of tetrabarium bis(dinitridoborate) monoxide, Ba4(BN2)2O
  17. Crystal structure of lithium tetracalcium tris(dinitridoborate), LiCa4(BN2)3
  18. Crystal structure of 9-cis-5,9-bis(desmethyl)-9-methoxy-5-trifluoromethyl-β-ionylideneacetic acid ethyl ester, C17H23F3O3
  19. Crystal structure of 9-cis-5,9-bis(desmethyl)-5,9-bis(trifluoromethyl)-retinonitrile, C20H21F6N
  20. Crystal structure of bis(tetraphenylphosphonium) tetrakis(o-chlorothiophenolato)nickelate(II), [(C6H5)4P]2[Ni(SC6H4Cl)4]
  21. Crystal structure of trichlor-[2,5-di-tert-butyl-3-trimethylsilylpyrrolyl]-titanium(IV), C15H28Cl3NSiTi
  22. Crystal structure of 2-chloro-4-chloromethyl-6,7-dimethylquinoline, C12H11Cl2N
  23. Crystal structure of 1,10-phenanthrolinedichlorodiphenyltin, C24H18Cl2N2Sn
  24. Crystal structure of methyl 2-N-(diphenylmethylene)-2-propargylpent-4-ynoate, C22H19NO2
  25. Crystal structure of 5-tert-butyl-2-(2-methoxy-5-tert-butyl-phenyl)benzofuran, C23H28O2
  26. Crystal structure of bis{2-[dimethyl(2,3-dimethyl-2-butyl)silyloxy]-5-(2-methylpropyl)-phenyl}ethyne, C19H21OSi
  27. Crystal structure of 6-phenyl-1,2,3-triazine-9-carboxylic acid methyl ester, N3CCHC(C6H5)CO2(CH3)
https://doi.org/10.1524/zkri.1994.209.2.151

Artikel in diesem Heft

  1. The effective shapes and sizes of Cu2+ and Mn3+ ions in oxides and fluorides
  2. Determination of cation distributions by anomalous dispersion
  3. The NaAlSiO4 nepheline-carnegieite solid-state transformation
  4. Dielectric, pyroelectric, piezoelectric and optical investigation of the phase transition sequence in BaZnGeO4
  5. Anisotropy of anomalous scattering in X-ray diffraction. ‘Forbidden’ axial reflections in tetragonal space groups
  6. Growth and dissolution morphology of Ge crystals formed in GeI2-GeI4 vapor mixtures
  7. Ab initio direct phasing of proteins: the limits
  8. Rutile type derivatives
  9. Zn3Pt9B4, Ga2,7Ir9B5 und Ga3Pt9B4, Zink- und Gallium-Übergangsmetallboride mit neuen Kanalstrukturen
  10. Bestimmung der Strukturen von Ba(OH)Cl, Ba(OD)Cl und Ba(OD)Br durch Röntgeneinkristall- und Neutronenpulver-Messungen
  11. Kristallzüchtung und Einkristallstrukturverfeinerungen der Rhodium(III)-phosphate RhPO4 und RhP3O9
  12. Crystal and molecular structure of bis(3-cyano-2,4 pentanedionato)-bis(N,N-dimethylethylenediamine)copper(II). An unusual conformation and co-ordination of a β-dione
  13. Electro-optic and electrostrictive properties of the complex thiosulphates (NH4)9[Cu(S2O3)4]Br2, (NH4)9[Cu(S2O3)4]I2, and (NH4)9[Ag(S2O3)4]Br2
  14. Structures of the trans and cis isomers of 3,5-dioxo-3,5-diisopropoxy-1,3,5-thiadiphosphorinane
  15. Crystal structure of rubidium pentanitrato-scandate(III), Rb2Sc(NO3)5
  16. Crystal structure of tetrabarium bis(dinitridoborate) monoxide, Ba4(BN2)2O
  17. Crystal structure of lithium tetracalcium tris(dinitridoborate), LiCa4(BN2)3
  18. Crystal structure of 9-cis-5,9-bis(desmethyl)-9-methoxy-5-trifluoromethyl-β-ionylideneacetic acid ethyl ester, C17H23F3O3
  19. Crystal structure of 9-cis-5,9-bis(desmethyl)-5,9-bis(trifluoromethyl)-retinonitrile, C20H21F6N
  20. Crystal structure of bis(tetraphenylphosphonium) tetrakis(o-chlorothiophenolato)nickelate(II), [(C6H5)4P]2[Ni(SC6H4Cl)4]
  21. Crystal structure of trichlor-[2,5-di-tert-butyl-3-trimethylsilylpyrrolyl]-titanium(IV), C15H28Cl3NSiTi
  22. Crystal structure of 2-chloro-4-chloromethyl-6,7-dimethylquinoline, C12H11Cl2N
  23. Crystal structure of 1,10-phenanthrolinedichlorodiphenyltin, C24H18Cl2N2Sn
  24. Crystal structure of methyl 2-N-(diphenylmethylene)-2-propargylpent-4-ynoate, C22H19NO2
  25. Crystal structure of 5-tert-butyl-2-(2-methoxy-5-tert-butyl-phenyl)benzofuran, C23H28O2
  26. Crystal structure of bis{2-[dimethyl(2,3-dimethyl-2-butyl)silyloxy]-5-(2-methylpropyl)-phenyl}ethyne, C19H21OSi
  27. Crystal structure of 6-phenyl-1,2,3-triazine-9-carboxylic acid methyl ester, N3CCHC(C6H5)CO2(CH3)
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Heruntergeladen am 2.2.2026 von https://www.degruyterbrill.com/document/doi/10.1524/zkri.1994.209.2.151/pdf
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