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Figure 1 Part of crystal structure of the L4− ligand and PbII centres in 1. All H atoms have been omitted for clarity. [symmetry code: (#1) −x, y+1, -z+1; (#2) x, y − 1,z; (#3) −x + 1, −y + 1, −z + 1; (#4) x + 1, y-1, z; (#5) −x + 1, −y + 1, −z + 1.] |