Materials Data on KAs4IO6 by Materials Project
K(As2O3)2I crystallizes in the hexagonal P6/mmm space group. The structure is two-dimensional and consists of one hydriodic acid molecule and one K(As2O3)2 sheet oriented in the (0, 0, 1) direction. In the K(As2O3)2 sheet, K1+ is bonded to twelve equivalent O2- atoms to form edge-sharing KO12 cuboctahedra. All K–O bond lengths are 3.19 Å. As3+ is bonded in a distorted T-shaped geometry to three equivalent O2- atoms. All As–O bond lengths are 1.84 Å. O2- is bonded in a distorted bent 120 degrees geometry to two equivalent K1+ and two equivalent As3+ atoms.
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