KYb2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one Cl(4), one Cl(7), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a distorted pentagonal bipyramidal 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. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), one Cl(4), one Cl(5), one Cl(6), one Cl(7), and two equivalent Cl(2) atoms. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to two equivalent K(1), one Yb(1), and one Yb(2) atom to form a mixture of distorted edge and corner-sharing ClK2Yb2 trigonal pyramids. In the second Cl site, Cl(7) is bonded in a 3-coordinate geometry to one K(1), one Yb(1), one Yb(2), and one Cl(5) atom. In the third Cl site, Cl(1) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Cl(1), and one Cl(4) atom. In the fourth Cl site, Cl(2) is bonded in a 3-coordinate geometry to one Yb(1) and two equivalent Yb(2) atoms. In the fifth Cl site, Cl(3) is bonded to two equivalent K(1), one Yb(1), and one Yb(2) atom to form a mixture of distorted edge and corner-sharing ClK2Yb2 trigonal pyramids. In the sixth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one K(1), one Yb(1), one Yb(2), and one Cl(1) atom. In the seventh Cl site, Cl(5) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Cl(5), and one Cl(7) atom.
KYb2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one Cl(4), one Cl(7), two equivalent Cl(3), and two equivalent Cl(6) atoms. The K(1)-Cl(4) bond length is 3.24 Å. The K(1)-Cl(7) bond length is 3.16 Å. There is one shorter (3.30 Å) and one longer (3.32 Å) K(1)-Cl(3) bond length. There is one shorter (3.20 Å) and one longer (3.24 Å) K(1)-Cl(6) bond length. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a distorted pentagonal bipyramidal 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 Yb(1)-Cl(1) bond length is 2.86 Å. The Yb(1)-Cl(2) bond length is 2.73 Å. The Yb(1)-Cl(3) bond length is 2.67 Å. The Yb(1)-Cl(4) bond length is 2.77 Å. The Yb(1)-Cl(5) bond length is 2.87 Å. The Yb(1)-Cl(6) bond length is 2.67 Å. The Yb(1)-Cl(7) bond length is 2.75 Å. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), one Cl(4), one Cl(5), one Cl(6), one Cl(7), and two equivalent Cl(2) atoms. The Yb(2)-Cl(1) bond length is 3.00 Å. The Yb(2)-Cl(3) bond length is 2.66 Å. The Yb(2)-Cl(4) bond length is 2.77 Å. The Yb(2)-Cl(5) bond length is 2.98 Å. The Yb(2)-Cl(6) bond length is 2.66 Å. The Yb(2)-Cl(7) bond length is 2.77 Å. There is one shorter (2.86 Å) and one longer (2.97 Å) Yb(2)-Cl(2) bond length. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to two equivalent K(1), one Yb(1), and one Yb(2) atom to form a mixture of distorted edge and corner-sharing ClK2Yb2 trigonal pyramids. In the second Cl site, Cl(7) is bonded in a 3-coordinate geometry to one K(1), one Yb(1), one Yb(2), and one Cl(5) atom. The Cl(7)-Cl(5) bond length is 2.64 Å. In the third Cl site, Cl(1) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Cl(1), and one Cl(4) atom. The Cl(1)-Cl(1) bond length is 2.20 Å. The Cl(1)-Cl(4) bond length is 2.64 Å. In the fourth Cl site, Cl(2) is bonded in a 3-coordinate geometry to one Yb(1) and two equivalent Yb(2) atoms. In the fifth Cl site, Cl(3) is bonded to two equivalent K(1), one Yb(1), and one Yb(2) atom to form a mixture of distorted edge and corner-sharing ClK2Yb2 trigonal pyramids. In the sixth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one K(1), one Yb(1), one Yb(2), and one Cl(1) atom. In the seventh Cl site, Cl(5) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Cl(5), and one Cl(7) atom. The Cl(5)-Cl(5) bond length is 2.19 Å.