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Figure 1
A tetranuclear fragment of (I)[link], with displacement ellipsoids drawn at the 50% probability level, showing both Pr coordination polyhedra and the bridging mode of the oxalate ion, which sits across an inversion centre. Dashed lines show the way in which water mol­ecules are involved in hydrogen bonding. [Symmetry codes: (i) −x + 1, y − [{1\over 2}], −z + [{3\over 2}]; (ii) −x + 1, −y + 1, −z + 2; (iii) −x + 1, −y + 2, −z + 2.]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 67| Part 3| February 2011| Pages m77-m80
doi:10.1107/S0108270111005403
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