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Figure 1 Mol­ecular conformation and atom-numbering scheme for the title compound, with the inter-species hydrogen bond shown as a dashed line and with non-H atoms shown as 50% probability displacement ellipsoids. Both the dication and the dianion have twofold rotational symmetry [symmetry codes (i) −x + 2, y, −z + [{3\over 2}]; (ii) −x + 1, y, −z + [{1\over 2}]].

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 67| Part 11| October 2011| Page o2966
doi:10.1107/S1600536811041274
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