The first selenite chloride hydrates, Co(HSeO 3 )-Cl ´3 H 2 O and Cu(HSeO 3 )Cl ´2 H 2 O, have been prepared from solution and characterised by single-crystal X-ray diffraction. The cobalt phase adopts an unusual ªone-dimensionalº structure built up from vertex-sharing pyramidal [HSeO 3 ] 2± , and o
Cobalt hydrogen selenite chloride dihydrate, Co(HSeO3)Cl·2H2O
✍ Scribed by Johnston, Magnus G. ;Harrison, William T. A.
- Publisher
- International Union of Crystallography
- Year
- 2003
- Tongue
- English
- Weight
- 382 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
Cobalt hydrogen selenite chloride dihydrate, Co(HSeO 3 )ClÁ-2H 2 O, is built up from a network of trans CoO 4 Cl 2 octahedra, cis Co(H 2 O) 4 Cl 2 octahedra and HSeO 3 pyramids. These units [d av (CoÐO) = 2.075 (2) A Ê , d av (CoÐCl) = 2.5370 (6) A Ê and d av (SeÐO) = 1.703 (2) A Ê ] share vertices by way of CoÐOÐ Se and CoÐClÐCo bonds to produce a three-dimensional structure. Co of the trans octahedron occupies an inversion centre; Co of the cis octahedron and two attached water O atoms lie on a mirror plane. The hydrogen-bonding scheme has been elucidated and involves OÐHÁ Á ÁO and OÐHÁ Á ÁCl interactions. The title compound is isostructural with Cu(HSeO 3 )ClÁ2H 2 O, although the metal polyhedra are distinctly different in the two phases.
📜 SIMILAR VOLUMES
The crystal structure, thermoanalytical properties, and infrared absorption spectra of \(\mathrm{Co}\left(\mathrm{HSeO}_{3}\right)_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\) are given. The crystals of the substance are monoclinic, with space group \(P 21 / n, a=\) \(7.1357(6) \AA, b=6.8759(6) \AA, c=8.