Acta Cryst. (2008). E64, i39-i40  [ doi:10.1107/S160053680801516X ]

Lithium diaquamagnesium catena-borodiphosphate(V) monohydrate, LiMg(H₂O)₂[BP₂O₈]·H₂O, at 173 K

J.-R. Lin, Y.-X. Huang, Y.-H. Wu and Y. Zhou

Abstract: The crystal structure of LiMg(H₂O)₂[BP₂O₈]·H₂O consists of tubular structural units, built from tetrahedral ¹{[BP₂O₈]^3-} borophosphate ribbons and (LiO₄)_n helices running along [001], which are interconnected by MgO₄(H₂O)₂ octahedra, forming a three-dimensional network structure with one-dimensional channels along [001] in which the water molecules are located. The water molecule in the channel is significantly displaced by up to 0.3 Å from the special position 6b (..2) to a half-occupied general position. Mg, B and one Li atom all lie on twofold axes. Of the two Li positions, one is at a special position 6b (..2), while the other is at a general position; both are only half-occupied.

Online 24 May 2008

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