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Figure 3 Details of the connections between the (PO3)∞ chains and the PrO8 square antiprisms: a) view showing the tridentate attachement of one chain (C1) and the connection of the second chain (C2) parallel and opposite to the first one. b) view showing the bidentate attachement of the third chain (C3) adjacent and orthogonal to the first one. c) view showing the bidentate attachement of the fourth chain (C4) also orthogonal and adjacent to the first one. |