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KZnAs crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent As3- atoms. All K–As bond lengths are 3.60 Å. Zn2+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Zn–As bond lengths are 2.46 Å. As3- is bonded in a distorted trigonal planar geometry to six equivalent K1+ and three equivalent Zn2+ atoms.
KZnAs crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent As3- atoms. All K–As bond lengths are 3.59 Å. Zn2+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Zn–As bond lengths are 2.47 Å. As3- is bonded in a distorted trigonal planar geometry to six equivalent K1+ and three equivalent Zn2+ atoms.