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Article Dans Une Revue Zeitschrift für Kristallographie - Crystalline Materials Année : 2021

KCu(SeO 4 )Cl(H 2 O) 2 , a first copper chloride selenate

Oleg Siidra

Résumé

Abstract A first copper chloride selenate was obtained upon attempted preparation of a selenate analog of chlorothionite. The new compound is monoclinic, P 2 1 / c , a = 7.1833(5) Å, b = 11.7784(8) Å, c = 8.2419(6) Å, β = 91.083(2)°, V = 697.20(8) Å 3 , R 1 = 0.033. KCu(SeO 4 )Cl(H 2 O) 2 has no structural analogs and adds to the small family of transition metal selenate halides. The CuO 3 (H 2 O) 2 Cl strongly distorted octahedra share common O–O edges thus forming dimeric units with a Cu–Cu distance of 3.49 Å. Dimeric units and SeO 4 tetrahedra in KCu(SeO 4 )Cl(H 2 O) 2 share common O atoms to produce unique [Cu(SeO 4 )Cl(H 2 O) 2 ] − chains. We discuss further perspectives of the selenate halide family and expected differences in crystal chemistry of sulfate and selenate halides.
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Dates et versions

hal-03649698 , version 1 (22-04-2022)

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Citer

Oleg Siidra, Mishel Markovski. KCu(SeO 4 )Cl(H 2 O) 2 , a first copper chloride selenate. Zeitschrift für Kristallographie - Crystalline Materials, 2021, 236 (5-7), pp.173-178. ⟨10.1515/zkri-2021-2020⟩. ⟨hal-03649698⟩
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