KBC3N3F crystallizes in the triclinic P-1 space group. K(1) is bonded to two equivalent N(1), two equivalent N(2), two equivalent N(3), and one F(1) atom to form distorted KN6F pentagonal bipyramids that share  a cornercorner with one B(1)C3F tetrahedra and edges with three equivalent K(1)N6F pentagonal bipyramids. B(1) is bonded to one C(1), one C(2), one C(3), and one F(1) atom to form BC3F tetrahedra that share  a cornercorner with one K(1)N6F pentagonal bipyramid. There are three inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one B(1) and one N(1) atom. In the second C site, C(2) is bonded in a linear geometry to one B(1) and one N(2) atom. In the third C site, C(3) is bonded in a linear geometry to one B(1) and one N(3) atom. There are three inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to two equivalent K(1) and one C(1) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(2) atom. In the third N site, N(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(3) atom. F(1) is bonded in a distorted single-bond geometry to one K(1) and one B(1) atom.
KBC3N3F crystallizes in the triclinic P-1 space group. K(1) is bonded to two equivalent N(1), two equivalent N(2), two equivalent N(3), and one F(1) atom to form distorted KN6F pentagonal bipyramids that share  a cornercorner with one B(1)C3F tetrahedra and edges with three equivalent K(1)N6F pentagonal bipyramids. There is one shorter (2.98 Å) and one longer (3.11 Å) K(1)-N(1) bond length. There is one shorter (2.99 Å) and one longer (3.12 Å) K(1)-N(2) bond length. There is one shorter (3.04 Å) and one longer (3.14 Å) K(1)-N(3) bond length. The K(1)-F(1) bond length is 2.89 Å. B(1) is bonded to one C(1), one C(2), one C(3), and one F(1) atom to form BC3F tetrahedra that share  a cornercorner with one K(1)N6F pentagonal bipyramid. The B(1)-C(1) bond length is 1.60 Å. The B(1)-C(2) bond length is 1.60 Å. The B(1)-C(3) bond length is 1.60 Å. The B(1)-F(1) bond length is 1.43 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one B(1) and one N(1) atom. The C(1)-N(1) bond length is 1.17 Å. In the second C site, C(2) is bonded in a linear geometry to one B(1) and one N(2) atom. The C(2)-N(2) bond length is 1.16 Å. In the third C site, C(3) is bonded in a linear geometry to one B(1) and one N(3) atom. The C(3)-N(3) bond length is 1.17 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to two equivalent K(1) and one C(1) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(2) atom. In the third N site, N(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(3) atom. F(1) is bonded in a distorted single-bond geometry to one K(1) and one B(1) atom.