K2CS2(O3F)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), two equivalent O(5), and one F(1) atom. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one F(1) atom. C(1) is bonded in a water-like geometry to one F(1) and one F(2) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(4), and one O(5) atom. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(3), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one K(2) and one S(2) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to one K(1), one K(2), and one C(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to one C(1) atom.
K2CS2(O3F)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), two equivalent O(5), and one F(1) atom. The K(1)-O(2) bond length is 2.92 Å. The K(1)-O(4) bond length is 2.71 Å. There is one shorter (2.98 Å) and one longer (2.99 Å) K(1)-O(1) bond length. There is one shorter (2.83 Å) and one longer (2.86 Å) K(1)-O(3) bond length. There is one shorter (2.91 Å) and one longer (3.09 Å) K(1)-O(5) bond length. The K(1)-F(1) bond length is 3.14 Å. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one F(1) atom. The K(2)-O(1) bond length is 2.82 Å. The K(2)-O(2) bond length is 2.87 Å. The K(2)-O(3) bond length is 2.85 Å. The K(2)-O(4) bond length is 2.76 Å. The K(2)-O(5) bond length is 2.95 Å. The K(2)-O(6) bond length is 2.69 Å. The K(2)-F(1) bond length is 3.24 Å. C(1) is bonded in a water-like geometry to one F(1) and one F(2) atom. The C(1)-F(1) bond length is 1.38 Å. The C(1)-F(2) bond length is 1.36 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(4), and one O(5) atom. The S(1)-O(2) bond length is 1.46 Å. The S(1)-O(4) bond length is 1.46 Å. The S(1)-O(5) bond length is 1.47 Å. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(3), and one O(6) atom. The S(2)-O(1) bond length is 1.47 Å. The S(2)-O(3) bond length is 1.47 Å. The S(2)-O(6) bond length is 1.45 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one K(2) and one S(2) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to one K(1), one K(2), and one C(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to one C(1) atom.