K2Mo6H2OCl14 crystallizes in the monoclinic Cc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one Cl(13), one Cl(14), two equivalent Cl(11), and two equivalent Cl(12) atoms to form distorted KCl6 pentagonal pyramids that share corners with two equivalent Mo(3)Cl5 square pyramids and edges with two equivalent K(1)Cl6 pentagonal pyramids. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), two equivalent Cl(10), and two equivalent Cl(9) atoms. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(3), one Cl(5), one Cl(7), and one Cl(9) atom. In the second Mo site, Mo(2) is bonded to one Cl(10), one Cl(2), one Cl(4), one Cl(6), and one Cl(8) atom to form edge-sharing MoCl5 trigonal bipyramids. In the third Mo site, Mo(3) is bonded to one Cl(11), one Cl(2), one Cl(3), one Cl(5), and one Cl(8) atom to form MoCl5 square pyramids that share corners with two equivalent K(1)Cl6 pentagonal pyramids and  an edgeedge with one Mo(2)Cl5 trigonal bipyramid. In the fourth Mo site, Mo(4) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(12), one Cl(4), one Cl(6), and one Cl(7) atom. In the fifth Mo site, Mo(5) is bonded in a 5-coordinate geometry to one Cl(14), one Cl(2), one Cl(3), one Cl(6), and one Cl(7) atom. In the sixth Mo site, Mo(6) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(13), one Cl(4), one Cl(5), and one Cl(8) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) atom. O(1) is bonded in a distorted water-like geometry to one K(2), one H(1), and one H(2) atom. There are fourteen inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(4), and one Mo(6) atom. In the second Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one Mo(2), one Mo(3), and one Mo(5) atom. In the third Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(3), and one Mo(5) atom. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(4), and one Mo(6) atom. In the fifth Cl site, Cl(5) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(3), and one Mo(6) atom. In the sixth Cl site, Cl(6) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(4), and one Mo(5) atom. In the seventh Cl site, Cl(7) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(4), and one Mo(5) atom. In the eighth Cl site, Cl(8) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(3), and one Mo(6) atom. In the ninth Cl site, Cl(9) is bonded in a trigonal non-coplanar geometry to two equivalent K(2) and one Mo(1) atom. In the tenth Cl site, Cl(10) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(2) and one Mo(2) atom. In the eleventh Cl site, Cl(11) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Mo(3) atom. In the twelfth Cl site, Cl(12) is bonded in a trigonal planar geometry to two equivalent K(1) and one Mo(4) atom. In the thirteenth Cl site, Cl(13) is bonded in a bent 120 degrees geometry to one K(1) and one Mo(6) atom. In the fourteenth Cl site, Cl(14) is bonded in a bent 120 degrees geometry to one K(1) and one Mo(5) atom.
K2Mo6H2OCl14 crystallizes in the monoclinic Cc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one Cl(13), one Cl(14), two equivalent Cl(11), and two equivalent Cl(12) atoms to form distorted KCl6 pentagonal pyramids that share corners with two equivalent Mo(3)Cl5 square pyramids and edges with two equivalent K(1)Cl6 pentagonal pyramids. The K(1)-Cl(13) bond length is 3.28 Å. The K(1)-Cl(14) bond length is 3.30 Å. There is one shorter (3.32 Å) and one longer (3.38 Å) K(1)-Cl(11) bond length. There is one shorter (3.19 Å) and one longer (3.21 Å) K(1)-Cl(12) bond length. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), two equivalent Cl(10), and two equivalent Cl(9) atoms. The K(2)-O(1) bond length is 2.79 Å. There is one shorter (3.18 Å) and one longer (3.49 Å) K(2)-Cl(10) bond length. There is one shorter (3.16 Å) and one longer (3.19 Å) K(2)-Cl(9) bond length. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(3), one Cl(5), one Cl(7), and one Cl(9) atom. The Mo(1)-Cl(1) bond length is 2.50 Å. The Mo(1)-Cl(3) bond length is 2.57 Å. The Mo(1)-Cl(5) bond length is 3.11 Å. The Mo(1)-Cl(7) bond length is 3.13 Å. The Mo(1)-Cl(9) bond length is 2.46 Å. In the second Mo site, Mo(2) is bonded to one Cl(10), one Cl(2), one Cl(4), one Cl(6), and one Cl(8) atom to form edge-sharing MoCl5 trigonal bipyramids. The Mo(2)-Cl(10) bond length is 2.43 Å. The Mo(2)-Cl(2) bond length is 2.60 Å. The Mo(2)-Cl(4) bond length is 2.56 Å. The Mo(2)-Cl(6) bond length is 2.45 Å. The Mo(2)-Cl(8) bond length is 2.53 Å. In the third Mo site, Mo(3) is bonded to one Cl(11), one Cl(2), one Cl(3), one Cl(5), and one Cl(8) atom to form MoCl5 square pyramids that share corners with two equivalent K(1)Cl6 pentagonal pyramids and  an edgeedge with one Mo(2)Cl5 trigonal bipyramid. The Mo(3)-Cl(11) bond length is 2.42 Å. The Mo(3)-Cl(2) bond length is 2.61 Å. The Mo(3)-Cl(3) bond length is 2.50 Å. The Mo(3)-Cl(5) bond length is 2.50 Å. The Mo(3)-Cl(8) bond length is 2.53 Å. In the fourth Mo site, Mo(4) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(12), one Cl(4), one Cl(6), and one Cl(7) atom. The Mo(4)-Cl(1) bond length is 2.87 Å. The Mo(4)-Cl(12) bond length is 2.48 Å. The Mo(4)-Cl(4) bond length is 2.70 Å. The Mo(4)-Cl(6) bond length is 3.01 Å. The Mo(4)-Cl(7) bond length is 2.58 Å. In the fifth Mo site, Mo(5) is bonded in a 5-coordinate geometry to one Cl(14), one Cl(2), one Cl(3), one Cl(6), and one Cl(7) atom. The Mo(5)-Cl(14) bond length is 2.46 Å. The Mo(5)-Cl(2) bond length is 2.66 Å. The Mo(5)-Cl(3) bond length is 3.13 Å. The Mo(5)-Cl(6) bond length is 2.93 Å. The Mo(5)-Cl(7) bond length is 2.52 Å. In the sixth Mo site, Mo(6) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(13), one Cl(4), one Cl(5), and one Cl(8) atom. The Mo(6)-Cl(1) bond length is 2.88 Å. The Mo(6)-Cl(13) bond length is 2.46 Å. The Mo(6)-Cl(4) bond length is 2.63 Å. The Mo(6)-Cl(5) bond length is 2.57 Å. The Mo(6)-Cl(8) bond length is 3.07 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) atom. The H(2)-O(1) bond length is 0.98 Å. O(1) is bonded in a distorted water-like geometry to one K(2), one H(1), and one H(2) atom. There are fourteen inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(4), and one Mo(6) atom. In the second Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one Mo(2), one Mo(3), and one Mo(5) atom. In the third Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(3), and one Mo(5) atom. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(4), and one Mo(6) atom. In the fifth Cl site, Cl(5) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(3), and one Mo(6) atom. In the sixth Cl site, Cl(6) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(4), and one Mo(5) atom. In the seventh Cl site, Cl(7) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(4), and one Mo(5) atom. In the eighth Cl site, Cl(8) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(3), and one Mo(6) atom. In the ninth Cl site, Cl(9) is bonded in a trigonal non-coplanar geometry to two equivalent K(2) and one Mo(1) atom. In the tenth Cl site, Cl(10) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(2) and one Mo(2) atom. In the eleventh Cl site, Cl(11) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Mo(3) atom. In the twelfth Cl site, Cl(12) is bonded in a trigonal planar geometry to two equivalent K(1) and one Mo(4) atom. In the thirteenth Cl site, Cl(13) is bonded in a bent 120 degrees geometry to one K(1) and one Mo(6) atom. In the fourteenth Cl site, Cl(14) is bonded in a bent 120 degrees geometry to one K(1) and one Mo(5) atom.