Materials Data on KSO2F by Materials Project
KSO2F crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to six equivalent O2- and three equivalent F1- atoms. There are four shorter (2.90 Å) and two longer (3.00 Å) K–O bond lengths. There are one shorter (2.85 Å) and two longer (3.18 Å) K–F bond lengths. S4+ is bonded in a trigonal non-coplanar geometry to two equivalent O2- and one F1- atom. Both S–O bond lengths are 1.48 Å. The S–F bond length is 1.83 Å. O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S4+ atom. F1- is bonded in a 2-coordinate geometry to three equivalent K1+ and one S4+ atom.
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