KBS4(O3Cl)4 crystallizes in the monoclinic Cc space group. K(1) is bonded to one O(1), one O(10), one O(12), one O(3), one O(5), and one O(7) atom to form distorted KO6 pentagonal pyramids that share  a cornercorner with one S(1)ClO3 tetrahedra,  a cornercorner with one S(3)ClO3 tetrahedra, corners with two equivalent S(2)ClO3 tetrahedra, and corners with two equivalent S(4)ClO3 tetrahedra. B(1) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one S(1)ClO3 tetrahedra,  a cornercorner with one S(2)ClO3 tetrahedra,  a cornercorner with one S(3)ClO3 tetrahedra, and  a cornercorner with one S(4)ClO3 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded to one O(10), one O(11), one O(6), and one Cl(4) atom to form distorted SClO3 tetrahedra that share  a cornercorner with one K(1)O6 pentagonal pyramid and  a cornercorner with one B(1)O4 tetrahedra. In the second S site, S(2) is bonded to one O(2), one O(5), one O(7), and one Cl(2) atom to form distorted SClO3 tetrahedra that share corners with two equivalent K(1)O6 pentagonal pyramids and  a cornercorner with one B(1)O4 tetrahedra. In the third S site, S(3) is bonded to one O(12), one O(8), one O(9), and one Cl(1) atom to form distorted SClO3 tetrahedra that share  a cornercorner with one K(1)O6 pentagonal pyramid and  a cornercorner with one B(1)O4 tetrahedra. In the fourth S site, S(4) is bonded to one O(1), one O(3), one O(4), and one Cl(3) atom to form distorted SClO3 tetrahedra that share corners with two equivalent K(1)O6 pentagonal pyramids and  a cornercorner with one B(1)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one B(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one S(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one B(1) and one S(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one B(1) and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one S(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one B(1) and one S(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one S(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(3) atom. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one S(3) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one S(2) atom. In the third Cl site, Cl(3) is bonded in a single-bond geometry to one S(4) atom. In the fourth Cl site, Cl(4) is bonded in a single-bond geometry to one S(1) atom.
KBS4(O3Cl)4 crystallizes in the monoclinic Cc space group. K(1) is bonded to one O(1), one O(10), one O(12), one O(3), one O(5), and one O(7) atom to form distorted KO6 pentagonal pyramids that share  a cornercorner with one S(1)ClO3 tetrahedra,  a cornercorner with one S(3)ClO3 tetrahedra, corners with two equivalent S(2)ClO3 tetrahedra, and corners with two equivalent S(4)ClO3 tetrahedra. The K(1)-O(1) bond length is 2.74 Å. The K(1)-O(10) bond length is 2.80 Å. The K(1)-O(12) bond length is 2.84 Å. The K(1)-O(3) bond length is 2.92 Å. The K(1)-O(5) bond length is 2.75 Å. The K(1)-O(7) bond length is 2.78 Å. B(1) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one S(1)ClO3 tetrahedra,  a cornercorner with one S(2)ClO3 tetrahedra,  a cornercorner with one S(3)ClO3 tetrahedra, and  a cornercorner with one S(4)ClO3 tetrahedra. The B(1)-O(2) bond length is 1.49 Å. The B(1)-O(4) bond length is 1.49 Å. The B(1)-O(6) bond length is 1.47 Å. The B(1)-O(9) bond length is 1.48 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to one O(10), one O(11), one O(6), and one Cl(4) atom to form distorted SClO3 tetrahedra that share  a cornercorner with one K(1)O6 pentagonal pyramid and  a cornercorner with one B(1)O4 tetrahedra. The S(1)-O(10) bond length is 1.44 Å. The S(1)-O(11) bond length is 1.43 Å. The S(1)-O(6) bond length is 1.56 Å. The S(1)-Cl(4) bond length is 2.03 Å. In the second S site, S(2) is bonded to one O(2), one O(5), one O(7), and one Cl(2) atom to form distorted SClO3 tetrahedra that share corners with two equivalent K(1)O6 pentagonal pyramids and  a cornercorner with one B(1)O4 tetrahedra. The S(2)-O(2) bond length is 1.56 Å. The S(2)-O(5) bond length is 1.44 Å. The S(2)-O(7) bond length is 1.44 Å. The S(2)-Cl(2) bond length is 2.02 Å. In the third S site, S(3) is bonded to one O(12), one O(8), one O(9), and one Cl(1) atom to form distorted SClO3 tetrahedra that share  a cornercorner with one K(1)O6 pentagonal pyramid and  a cornercorner with one B(1)O4 tetrahedra. The S(3)-O(12) bond length is 1.43 Å. The S(3)-O(8) bond length is 1.43 Å. The S(3)-O(9) bond length is 1.56 Å. The S(3)-Cl(1) bond length is 2.05 Å. In the fourth S site, S(4) is bonded to one O(1), one O(3), one O(4), and one Cl(3) atom to form distorted SClO3 tetrahedra that share corners with two equivalent K(1)O6 pentagonal pyramids and  a cornercorner with one B(1)O4 tetrahedra. The S(4)-O(1) bond length is 1.44 Å. The S(4)-O(3) bond length is 1.43 Å. The S(4)-O(4) bond length is 1.55 Å. The S(4)-Cl(3) bond length is 2.03 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one B(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one S(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one B(1) and one S(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one B(1) and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one S(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one B(1) and one S(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one S(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one K(1) and one S(3) atom. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one S(3) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one S(2) atom. In the third Cl site, Cl(3) is bonded in a single-bond geometry to one S(4) atom. In the fourth Cl site, Cl(4) is bonded in a single-bond geometry to one S(1) atom.