Figure 1
(a) The molecular structure of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level, with independent atoms shown as heavy bonds and filled ellipsoids, and symmetry-related atoms shown as hollow bonds and empty ellipsoids. Primed atoms are related to unprimed ones by the `pseudo inversion' at (, , ). (b) Schematic overlap of the independent unit and its `pseudo-inverted' counterpart. No least-squares fit was performed. [Symmetry codes: (i) −x + 2, −y, −z + 1; (ii) −x − 1, −y + 1, −z.] |