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The crystal structures of Mo4Al17 and Mo5Al22

Published/Copyright: July 28, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 210 Issue 2

Abstract

Single crystals of two phases in the binary Mo – Al system were obtained from heat treated aluminum-rich alloys after the dissolution of the remaining solidified aluminum in hydrochloric acid. The crystal structures have been investigated using four-circle diffractometer data: Mo4Al17 was found to be monoclinic (space group C2, a = 9.158(1) Å, b = 4.9323(8) Å, c = 28.935(5) Å, β = 96.71(1)°, Z = 4), while Mo5Al22 was determined to be orthorhombic (space group Fdd2, a = 73.82(3) Å, b = 9.161(3) Å, c = 4.933(2) Å, Z = 8).

Three different polyhedrons represent the atomic environment: a hexagonal cuboctahedron (CN = 12), a defect cuboctahedron (CN = 11) and a combination from cuboctahedron and rhombododecahedron (CN = 13).

The crystal structures are interpreted in terms of the “intergrowth” concept as being built from slab segments taken from the closest packing with the composition TAl5 (related to WAl5 structure type, T – transition metal) and segments taken from the TiSi2 structure type (composition TAl2). The composition of the unit cell is described by the formula Mo2m+2nAl10m+4n(m – number of TAl5-segments and n – number of TiSi2-segments in the unit cell).

Published Online: 2010-7-28
Published in Print: 1995-2-1

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Articles in the same Issue

  1. Perfect planar antiphase-domain structures: a shift-lattice interpretation
  2. TlIn5S6: ein neues, gemischtvalentes ternäres Chalkogenid und sein kristallchemisches Umfeld
  3. Crystal structure of KBe2BO3F2
  4. The crystal structures of Mo4Al17 and Mo5Al22
  5. Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)
  6. Structure of 2′-hydroxy flavone1
  7. Steric effects in the structure of mixed-ligand nickel (II) chelates. Crystal and molecular structure of [N,N′-diphenyl-1,2-diaminoethane)-bis(1,1,1,5,5,5,-hexafluoro-2,4-pentanedionato)nickel(II)]
  8. Crystal and molecular structure of noscapine 1
  9. Crystal and molecular structure of L-(S)-histidine dihydrochloride (monoclinic form)
  10. Crystal and molecular structure of P,P-diphenyl-N-methyl-thiophosphinylthioformamide
  11. Evidence of solvent coordination in mixed-ligand copper(II) chelates. Crystal and molecular structure of aquo(N,N,N′,N′-tetramethyl-1,2-diaminoethane) (3-cyano-2,4-pentanedionato)copper(II) perchlorate
  12. Structure of (TEA)2CuCl4 and hydration
  13. Crystal structure of guanidinium cyclodecaphosphate tetrahydrate
  14. Lewis acidic/Lewis basic character of the bis(triphenyltin) succinate moiety in the hexanuclear complex, [bis(triphenyltin) succinate · 2quinoline N-oxide] · 2[bis(triphenyltin) succinate]*
  15. Novel aspects in structures of copper (II) Schiff base complexes
  16. Crystal structure of dipotassium lithium catena-di-μ-phosphidoaluminate, K2LiAlP2
  17. Crystal structure of sodium potassium antimonide triantimonidogallate, K6Na3Sb[GaSb3]
  18. Crystal structure of lithium pentachlorodiytterbate(II), LiYb2Cl5
  19. Crystal structure of tricaesium enneachlorodilutetate(III), Cs3Lu2Cl9
  20. Crystal structure of cyanoacetato-tetrahydrofuran-tris(3-phenylpyrazol-1-yl) hydroborato-cadmium, C34H32BCdN7O3
  21. Crystal structure of acetato-1,5,9-triazacyclododecane-zinc tetraphenylborate, [(C9H21N3)(CH3CO2)Zn] [(C6H5)4B]
  22. Crystal structure of the tetraacetate of erythro-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol, C25H28O10
  23. Crystal structure of 1-methylpyridinium-2-dithiocarboxylate, C7H7NS2
  24. Crystal structure of 1,6-dimethylpyridinium-2-dithiocarboxylate, C8H9NS2
  25. Crystal structure of 4,5-dihydro-1H,3H-1-benzazepin-2-one, C10H11NO
  26. Crystal structure of hexakis(ethanolammonium) decavanadate dihydrate,(C2H8NO)6(V10O28)(H2O)2
  27. Crystal structure of N-phenyl-7,8-benzo-5-(E)-methylmethylene-2,3-diazatricyclo[4.4.0.04,9]non-2-ene-dicarboximide, C21H17N3O2
  28. Crystal structure of N-phenyl-2,3-diaza-5-(E)-carbomethoxy-methylene-tricyclo[4.3.0.04,9]nonane-2,3-dicarboximide, C18H17N3O4
  29. Crystal structure of potassium cadmium thallium (14/9/21), K14Cd9Tl21
https://doi.org/10.1524/zkri.1995.210.2.96

Articles in the same Issue

  1. Perfect planar antiphase-domain structures: a shift-lattice interpretation
  2. TlIn5S6: ein neues, gemischtvalentes ternäres Chalkogenid und sein kristallchemisches Umfeld
  3. Crystal structure of KBe2BO3F2
  4. The crystal structures of Mo4Al17 and Mo5Al22
  5. Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)
  6. Structure of 2′-hydroxy flavone1
  7. Steric effects in the structure of mixed-ligand nickel (II) chelates. Crystal and molecular structure of [N,N′-diphenyl-1,2-diaminoethane)-bis(1,1,1,5,5,5,-hexafluoro-2,4-pentanedionato)nickel(II)]
  8. Crystal and molecular structure of noscapine 1
  9. Crystal and molecular structure of L-(S)-histidine dihydrochloride (monoclinic form)
  10. Crystal and molecular structure of P,P-diphenyl-N-methyl-thiophosphinylthioformamide
  11. Evidence of solvent coordination in mixed-ligand copper(II) chelates. Crystal and molecular structure of aquo(N,N,N′,N′-tetramethyl-1,2-diaminoethane) (3-cyano-2,4-pentanedionato)copper(II) perchlorate
  12. Structure of (TEA)2CuCl4 and hydration
  13. Crystal structure of guanidinium cyclodecaphosphate tetrahydrate
  14. Lewis acidic/Lewis basic character of the bis(triphenyltin) succinate moiety in the hexanuclear complex, [bis(triphenyltin) succinate · 2quinoline N-oxide] · 2[bis(triphenyltin) succinate]*
  15. Novel aspects in structures of copper (II) Schiff base complexes
  16. Crystal structure of dipotassium lithium catena-di-μ-phosphidoaluminate, K2LiAlP2
  17. Crystal structure of sodium potassium antimonide triantimonidogallate, K6Na3Sb[GaSb3]
  18. Crystal structure of lithium pentachlorodiytterbate(II), LiYb2Cl5
  19. Crystal structure of tricaesium enneachlorodilutetate(III), Cs3Lu2Cl9
  20. Crystal structure of cyanoacetato-tetrahydrofuran-tris(3-phenylpyrazol-1-yl) hydroborato-cadmium, C34H32BCdN7O3
  21. Crystal structure of acetato-1,5,9-triazacyclododecane-zinc tetraphenylborate, [(C9H21N3)(CH3CO2)Zn] [(C6H5)4B]
  22. Crystal structure of the tetraacetate of erythro-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol, C25H28O10
  23. Crystal structure of 1-methylpyridinium-2-dithiocarboxylate, C7H7NS2
  24. Crystal structure of 1,6-dimethylpyridinium-2-dithiocarboxylate, C8H9NS2
  25. Crystal structure of 4,5-dihydro-1H,3H-1-benzazepin-2-one, C10H11NO
  26. Crystal structure of hexakis(ethanolammonium) decavanadate dihydrate,(C2H8NO)6(V10O28)(H2O)2
  27. Crystal structure of N-phenyl-7,8-benzo-5-(E)-methylmethylene-2,3-diazatricyclo[4.4.0.04,9]non-2-ene-dicarboximide, C21H17N3O2
  28. Crystal structure of N-phenyl-2,3-diaza-5-(E)-carbomethoxy-methylene-tricyclo[4.3.0.04,9]nonane-2,3-dicarboximide, C18H17N3O4
  29. Crystal structure of potassium cadmium thallium (14/9/21), K14Cd9Tl21
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