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Figure 5 Single-crystal X-ray structure of the TEA countercation with all disordered atoms shown. The thermal ellipsoid plot is at a 50% probability level. The tetraethylammonium is disordered over two mutually exclusive sites by a pseudo-inversion center. The refined occupancy ratio is 0.759 (3) to 0.241 (1). Hydrogen atoms have been omitted for clarity. |