Home Die Molekül- und Kristallstruktur der Kupfer-, Aluminium-und Kaliumkomplexe des Cyclohexyl-hydroxy-diazeniumoxids1
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Die Molekül- und Kristallstruktur der Kupfer-, Aluminium-und Kaliumkomplexe des Cyclohexyl-hydroxy-diazeniumoxids1

Published/Copyright: July 28, 2010

Abstract

The crystal structures of copper, aluminium and potassium cyclohexyl(hydroxy)diazenium oxide (2) have been determined at 203 K. Yellow crystals of C18H33AlN6O6 are triclinic, space group P[unk] a = 9.459(1) Å, b = 11.986(1) Å, c = 20.599(2) Å, α = 92.36(1)°, β = 91.65(1)°, γ = 92.69(1)°, Z = 4 and Dx = 1.311 Mg m−3. Light blue crystals of C12H22CuN4O4 are monoclinic, space group P21/c, a = 12.944(3) Å, b = 5.001(1) Å, c = 11.716(2) Å, β = 97.90(1)°, Z = 2 and Dx = 1.547 Mg m−3. Colorless crystals of C6H11KN2O · H2O are monoclinic, space group P21/c, a = 5.507(1) Å, b = 32.208(4) Å, c = 10.289(1) Å, β = 90.01(1)°, Z = 8 and Dx = 1.458Mg m−3. The structures have been solved by direct methods and refined with a full-matrix leastsquares procedure; C18H33AlN6O6: R(F) = 0.056, 5972 independent reflections; C12H22CuN4O4: R(F) = 0.045, 974 independent reflections; C6H11KN2O2 · H2O: R(F) = 0.099, 2374 independent reflections. In all three complexes the bidentate hydroxy-diazeniumoxide ligand coordinates the metal ion through its oxygen atoms. In the copper complex the metal is rectangular planar coordinated. The Al complex shows the central ion in octahedral environment. In both cases, discret molecular entities are observed that are connected in the crystal through van der Waals contacts. The potassium ion is surrounded by seven oxygen atoms of which four are part of two bidentate ligands coordinating the ion in a chelate-type fashion. Two remaining ones belong to ligands bridging between neighboring potassium ions. The seventh coordination site is occupied by a water molecule.

Published Online: 2010-7-28
Published in Print: 1996-11-1

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