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Figure 4 The coordination spheres around the two lead atoms, considering bond lengths up to 3.5 Å; short Pb—O distances < 2.75 Å are given in black, emphasizing the one-sided [4]-coordination for Pb1 and [6]-coordination for Pb2. Longer bonds augmenting the coordination spheres are given in yellow. Probability of the displacement parameters as in Fig. 1. |