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Figure 11 Part of the crystal structure of (4), which shows the linking of the [01] anion chains by the centrosymmetric cations. For the sake of clarity, H atoms bonded to C atoms are omitted, and only the major orientation of the cation is shown. The atoms marked with an asterisk (*), hash (#), dollar sign ($) or at sign (@) are at the symmetry positions (1 - x, 1 - y, 1 - z), (x, -1 + y, 1 + z), (1 - x, -y, 2 - z) and (-x, 1 - y, 1 - z), respectively.

© International Union of Crystallography 2003