Abstract
The isomorphous cadmium(II) oxalate trihydrate (I) and lead(II) oxalate trihydrate (II) crystals belong to space groupP¯1 withZ=2. The crystallographic parameters for compoundI are:a=6.006(1),b=6.663(1),c=8.497(1)Å,a=74.76(1),β=74.39(1), γ=80.94(1)°, andR=0.028 for 2643 observed MoKα reflections; forII:a=6.008(1),b=6.671(1),c=8.493(1)Å,a=74.70(1),β=74.33(1), γ=80.98(1)°, andR=0.065 for 4536 reflections. In the crystal structure, the metal atom is surrounded by seven oxygen atoms (including two aqua ligands) in the form of a distorted pentagonal bipyramid. The coordination polyhedra are interconnected through bridging oxalate groups to form a “thick layer” matching the (020) plane. Adjacent layers are further linked by hydrogen bonds involving both ligand and lattice water molecules to generate a three-dimensional network.
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On leave from Central Laboratory, Nankai University, Tianjin, China.
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Sheng-Hua, H., Ru-Ji, W. & Mak, T.C.W. Crystal structures of isomorphous cadmium(II) and lead(II) oxalate trihydrates. Journal of Crystallographic and Spectroscopic Research 20, 99–104 (1990). https://doi.org/10.1007/BF01160959
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DOI: https://doi.org/10.1007/BF01160959