KSm2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted edge and face-sharing SmCl7 pentagonal bipyramids. In the second Sm site, Sm(2) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted edge and face-sharing SmCl7 pentagonal bipyramids. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted T-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the third Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the fourth Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted L-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the sixth Cl site, Cl(4) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom.
KSm2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. The K(1)-Cl(1) bond length is 3.36 Å. The K(1)-Cl(2) bond length is 3.27 Å. The K(1)-Cl(3) bond length is 3.60 Å. The K(1)-Cl(4) bond length is 3.31 Å. The K(1)-Cl(5) bond length is 3.19 Å. The K(1)-Cl(6) bond length is 3.23 Å. The K(1)-Cl(7) bond length is 3.23 Å. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted edge and face-sharing SmCl7 pentagonal bipyramids. The Sm(1)-Cl(1) bond length is 2.77 Å. The Sm(1)-Cl(2) bond length is 2.81 Å. The Sm(1)-Cl(3) bond length is 2.75 Å. The Sm(1)-Cl(4) bond length is 2.75 Å. The Sm(1)-Cl(5) bond length is 2.74 Å. The Sm(1)-Cl(6) bond length is 2.80 Å. The Sm(1)-Cl(7) bond length is 2.77 Å. In the second Sm site, Sm(2) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted edge and face-sharing SmCl7 pentagonal bipyramids. The Sm(2)-Cl(1) bond length is 2.77 Å. The Sm(2)-Cl(2) bond length is 2.80 Å. The Sm(2)-Cl(3) bond length is 2.76 Å. The Sm(2)-Cl(4) bond length is 2.76 Å. The Sm(2)-Cl(5) bond length is 2.77 Å. The Sm(2)-Cl(6) bond length is 2.79 Å. The Sm(2)-Cl(7) bond length is 2.74 Å. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted T-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the third Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the fourth Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted L-shaped geometry to one K(1), one Sm(1), and one Sm(2) atom. In the sixth Cl site, Cl(4) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Sm(1), and one Sm(2) atom.