Materials Data on AcI3 by Materials Project
AcI3 crystallizes in the hexagonal P6_3/mmc space group. The structure is one-dimensional and consists of two AcI3 ribbons oriented in the (0, 0, 1) direction. Ac3+ is bonded to six equivalent I1- atoms to form distorted face-sharing AcI6 pentagonal pyramids. All Ac–I bond lengths are 3.29 Å. I1- is bonded in an L-shaped geometry to two equivalent Ac3+ atoms.
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