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Single crystals of cadmium trioxoselenate(IV) monohydrate were obtained from aqueous solutions of H2SeO3 and [Cd(CH3COO)2].2H2O. CdSeO3.H2O crystallizes in the MnSeO3.D2O oP32 type. The structure contains buckled trans layers [CdSeO3.H2O]2i consisting of strongly distorted, vertex-sharing CdO5(H2O) octahedra and SeO32- ions, both of symmetry m. The H-atom positions were also determined, indicating that the H2O molecules have pseudo mm2 symmetry. They form an intralayer hydrogen-bonding scheme with approximately linear hydrogen bonds of distance d(OH...O) = 2.903 (3) Å. As a consequence, the [MSeO3.H2O]2i layers of the [MnSeO3.D2O] oP32-type monohydrates are held together by van der Waals interactions but not by hydrogen bonds.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks I, global

hkl

Structure factor file (CIF format)
Contains datablock cdse1wa

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