Acta Crystallographica Section E

Structure Reports Online

Volume 63, Part 2 (February 2007)

inorganic compounds

 

Redetermination of Cs[MnCl₃(H₂O)₂]

W. Massa, O. V. Yakubovich and O. V. Dimitrova

Abstract: The structure of the one-dimensional antiferromagnet caesium diaquatrichloromanganate(II) was re-refined based on area-detector data, including the positions of H atoms. The Mn^II atom, on a twofold rotation axis, is in a distorted octahedral coordination by two bridging Cl ligands in trans positions, two terminal Cl ligands and two aqua ligands, both in cis positions. Hydrogen bonds of the type O-HCl connect octahedra along the chain and link the chains into layers which are separated by the Cs ions (also on twofold axes). The structure is discussed in comparison with non-isotypic related compounds of the morphotropic series AMCl₃(H₂O)₂ (A = Cs, Rb, K and M = Mn, Fe, Co).

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