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Figure 1 A portion of the crystal structure of (I) showing the atomic numbering and 45% probability dispalcement ellipsoids [symmetry codes: (#1) −x + 1, y + , −z + ; (#2) x, −y + , z − ; (#3) −x + 1, y − , −z + ; (#4) x, −y + , z + ]. H atoms omitted for clarity. |