KBe2BO3F2 crystallizes in the trigonal R-3c space group. K(1) is bonded in a 6-coordinate geometry to six equivalent F(1) atoms. Be(1) is bonded to three equivalent O(1) and one F(1) atom to form corner-sharing BeO3F tetrahedra. B(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a trigonal planar geometry to two equivalent Be(1) and one B(1) atom. F(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Be(1) atom.
KBe2BO3F2 crystallizes in the trigonal R-3c space group. K(1) is bonded in a 6-coordinate geometry to six equivalent F(1) atoms. All K(1)-F(1) bond lengths are 2.72 Å. Be(1) is bonded to three equivalent O(1) and one F(1) atom to form corner-sharing BeO3F tetrahedra. All Be(1)-O(1) bond lengths are 1.63 Å. The Be(1)-F(1) bond length is 1.52 Å. B(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All B(1)-O(1) bond lengths are 1.37 Å. O(1) is bonded in a trigonal planar geometry to two equivalent Be(1) and one B(1) atom. F(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Be(1) atom.