Polysulfonylamines. LXXXIII. Heptaaquacalcium 1,2-Benzenedisulfonimide

In heptaaquacalcium bis[1,3,2-benzodithiazole 1,1,3,3-tetroxide(1-)], [Ca(H₂O)₇](C₆H₄NO₄S₂)₂, the calcium ion is surrounded by the O atoms of seven water molecules in a distorted pentagonal bipyramidal geometry. The structure displays layers of anions, with the calcium cations and water molecules between these layers. The layers are held together by an extensive network of hydrogen bonds involving the water molecules and the (SO₂)₂N^- subunits of the anions.

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