Enantio­tropic phase transition and twinning in 2,2,3,3,4,4-hexa­fluoro­pentane-1,5-diol

Ha, J.-M.; Young, V.

doi:10.1107/S0108270109025141

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 7
The superposition of (012) layers of (Ib) and (II), presented to illustrate the sliding of the layers during the enantiotropic phase transition of HFPD

. Basal layers (not shown here) were overlayed to yield an r.m.s. deviation of 0.16 Å for respective pairs of O atoms. A composite image is shown, containing (012) layers for (Ib) and (II) above the basal layer, with the [100] axis horizontal and the [01 $[\overline{3}]$ ] axis vertical. Molecules of form (Ib) are drawn with dashed bonds and molecules of form (II) are drawn with solid bonds. Each layer slides 1.83 (5) Å along the [01 $[\overline{3}]$ ] axis in the (012) plane, based on the translation of respective pairs of O atoms in forms (Ib) and (II).

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 65| Part 8| July 2009| Pages o388-o395

doi:10.1107/S0108270109025141

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