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Figure 2 Single-crystal X-ray structure (side view) of 1. The DMF is coordinated to Cu2 with a CuII—O7 distance of 2.763 (14) Å. The thermal ellipsoid plot of 1 is at a 50% probability level with the disordered portions of the molecule shown only at the higher occupancy positions. Cu2 and O7 are labeled to highlight the DMF molecules bonded to the metallacrown. Hydrogen atoms and the lattice TEA have been omitted for clarity (symmetry operator (i): −x + 1, −y + 1, −z + 1). |