Ba2YCl7 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(2), three equivalent Cl(1), and three equivalent Cl(3) atoms. Y(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and four equivalent Cl(2) atoms. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Ba(1) and one Y(1) atom to form a mixture of distorted edge and corner-sharing ClBa3Y tetrahedra. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Y(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one Y(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Y(1) atom.
Ba2YCl7 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(2), three equivalent Cl(1), and three equivalent Cl(3) atoms. The Ba(1)-Cl(4) bond length is 3.11 Å. There is one shorter (3.29 Å) and one longer (3.31 Å) Ba(1)-Cl(2) bond length. There are a spread of Ba(1)-Cl(1) bond distances ranging from 3.19-3.24 Å. There are a spread of Ba(1)-Cl(3) bond distances ranging from 3.19-3.70 Å. Y(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and four equivalent Cl(2) atoms. The Y(1)-Cl(4) bond length is 2.90 Å. Both Y(1)-Cl(1) bond lengths are 2.74 Å. Both Y(1)-Cl(3) bond lengths are 2.83 Å. There are two shorter (2.79 Å) and two longer (3.43 Å) Y(1)-Cl(2) bond lengths. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Ba(1) and one Y(1) atom to form a mixture of distorted edge and corner-sharing ClBa3Y tetrahedra. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Y(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one Y(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Y(1) atom.