Startseite Die Kristallstrukturen von Ph3AsCI2 und β-Ph3AsBr2 / Crystal Structures of Ph3AsCI2 and β-Ph3AsBr2
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Die Kristallstrukturen von Ph3AsCI2 und β-Ph3AsBr2 / Crystal Structures of Ph3AsCI2 and β-Ph3AsBr2

  • Bernhard Neumüller , Soheila Chitsaz und Kurt Dehnicke
Veröffentlicht/Copyright: 2. Juni 2014
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Colourless single crystals of Ph3AsCl2 as well as of β-Ph3AsBr2 were obtained from acetonitrile solutions and were suitable for X-ray structure determinations. Ph3AsCl2: Space group P212121, Z = 4, lattice dimensions at -90 °C: a = 1247.9(2), b = 1267.5(1), c = 1033.4(1) pm, R x = 0.0484.

β-Ph3AsBr2: Space group P1̄ , Z = 4, lattice dimensions at -80 °C: a = 949.1(1), b = 1189.7(1), c = 1693.7(2) pm, a = 98.32(1)°, ß = 103.64(1)°, γ = 109.44(1)°, R x - 0.0628. The structures consist of Ph3AsX2 molecules (X = Cl, Br) with trigonalbipyramidal coordination of the arsenic atom with the halogen atoms in the axial positions.

Received: 1999-8-1
Published Online: 2014-6-2
Published in Print: 1999-12-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

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