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, [{1\over 2}] + y, [{3\over 2}] - z; (ii) [{3\over 2}] - x, 1 - y, -[{1\over 2}] + z; (iii) [{3\over 2}] - x, 1 - y, -[{1\over 2}] + z; (iv) [{1\over 2}] - x, -y, [{1\over 2}] + z].  [article HTML]