Materials Data on KF2 by Materials Project
KF2 is zeta iron carbide-like structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. K is bonded to six equivalent F atoms to form a mixture of edge and corner-sharing KF6 octahedra. The corner-sharing octahedral tilt angles are 69°. There are two shorter (2.59 Å) and four longer (2.71 Å) K–F bond lengths. F is bonded in a distorted trigonal planar geometry to three equivalent K atoms.
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