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Figure 2
The mol­ecular structure of polymorph II. The upper mol­ecule is located on an inversion centre and nonlabelled atoms are generated through the symmetry code ([1 \over 2] − x, [1 \over 2] − y, 1 − z); the lower mol­ecule is located on a binary axis and the symmetry code for the nonlabelled atoms is (1 − x, y, [3 \over 2] − z). Displacement ellipsoids are shown at the 20% probability level. The minor positions of the disordered methyl H atoms are not shown. The inset shows part of the crystal structure, including one stack of mol­ecules.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 65| Part 4| March 2009| Pages o176-o178
doi:10.1107/S0108270109008439
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