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Figure 1 A portion of the crystal structure of (I) showing the coordination environment of Sm1, 30% probability displacement ellipsoids and atomic numbering [symmetry codes: (i) 1 − x, + y, − z; (ii) − x, 1 − y, − + z; (iii) − x, 1 − y, − + z; (iv) − x, −y, + z]. |