Er10Ru10C19 crystallizes in the monoclinic Cm space group. There are ten inequivalent Er sites. In the first Er site, Er(1) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(10), two equivalent C(7), two equivalent C(8), and two equivalent C(9) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent C(10), two equivalent C(2), two equivalent C(7), two equivalent C(8), and two equivalent C(9) atoms. In the third Er site, Er(3) is bonded in a 6-coordinate geometry to two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. In the fourth Er site, Er(4) is bonded in a 6-coordinate geometry to two equivalent C(3), two equivalent C(6), and two equivalent C(8) atoms. In the fifth Er site, Er(5) is bonded in a 6-coordinate geometry to two equivalent C(3), two equivalent C(6), and two equivalent C(8) atoms. In the sixth Er site, Er(6) is bonded in a 6-coordinate geometry to two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. In the seventh Er site, Er(7) is bonded in a 13-coordinate geometry to two equivalent Ru(1), two equivalent Ru(2), two equivalent Ru(4), one C(1), two equivalent C(3), two equivalent C(5), and two equivalent C(9) atoms. In the eighth Er site, Er(8) is bonded in a 13-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), two equivalent Ru(5), one C(1), two equivalent C(10), two equivalent C(4), and two equivalent C(6) atoms. In the ninth Er site, Er(9) is bonded in a 8-coordinate geometry to two equivalent C(2), two equivalent C(3), two equivalent C(5), and two equivalent C(9) atoms. In the tenth Er site, Er(10) is bonded in a 8-coordinate geometry to two equivalent C(10), two equivalent C(2), two equivalent C(4), and two equivalent C(6) atoms. There are five inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 4-coordinate geometry to one Er(7), one Er(8), one C(1), one C(10), one C(2), and one C(9) atom. In the second Ru site, Ru(2) is bonded in a 5-coordinate geometry to one Er(7), one C(3), one C(4), one C(6), one C(7), and one C(9) atom. In the third Ru site, Ru(3) is bonded in a 5-coordinate geometry to one Er(8), one C(10), one C(3), one C(4), one C(5), and one C(8) atom. In the fourth Ru site, Ru(4) is bonded in a 4-coordinate geometry to one Er(7), one C(1), one C(2), one C(5), and one C(7) atom. In the fifth Ru site, Ru(5) is bonded in a 4-coordinate geometry to one Er(8), one C(1), one C(2), one C(6), and one C(8) atom. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a 9-coordinate geometry to one Er(1), one Er(7), one Er(8), two equivalent Ru(1), two equivalent Ru(4), and two equivalent Ru(5) atoms. In the second C site, C(2) is bonded in a 7-coordinate geometry to one Er(10), one Er(2), one Er(9), one Ru(1), one Ru(4), one Ru(5), and one C(2) atom. In the third C site, C(3) is bonded in a 7-coordinate geometry to one Er(4), one Er(5), one Er(7), one Er(9), one Ru(2), one Ru(3), and one C(5) atom. In the fourth C site, C(4) is bonded in a 7-coordinate geometry to one Er(10), one Er(3), one Er(6), one Er(8), one Ru(2), one Ru(3), and one C(6) atom. In the fifth C site, C(5) is bonded to one Er(3), one Er(6), one Er(7), one Er(9), one Ru(3), one Ru(4), and one C(3) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the sixth C site, C(6) is bonded to one Er(10), one Er(4), one Er(5), one Er(8), one Ru(2), one Ru(5), and one C(4) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the seventh C site, C(7) is bonded to one Er(1), one Er(2), one Er(3), one Er(6), one Ru(2), one Ru(4), and one C(9) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the eighth C site, C(8) is bonded to one Er(1), one Er(2), one Er(4), one Er(5), one Ru(3), one Ru(5), and one C(10) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the ninth C site, C(9) is bonded in a 7-coordinate geometry to one Er(1), one Er(2), one Er(7), one Er(9), one Ru(1), one Ru(2), and one C(7) atom. In the tenth C site, C(10) is bonded in a 7-coordinate geometry to one Er(1), one Er(10), one Er(2), one Er(8), one Ru(1), one Ru(3), and one C(8) atom.
Er10Ru10C19 crystallizes in the monoclinic Cm space group. There are ten inequivalent Er sites. In the first Er site, Er(1) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(10), two equivalent C(7), two equivalent C(8), and two equivalent C(9) atoms. The Er(1)-C(1) bond length is 3.08 Å. Both Er(1)-C(10) bond lengths are 2.61 Å. Both Er(1)-C(7) bond lengths are 2.62 Å. Both Er(1)-C(8) bond lengths are 2.62 Å. Both Er(1)-C(9) bond lengths are 2.61 Å. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent C(10), two equivalent C(2), two equivalent C(7), two equivalent C(8), and two equivalent C(9) atoms. Both Er(2)-C(10) bond lengths are 2.77 Å. Both Er(2)-C(2) bond lengths are 2.84 Å. Both Er(2)-C(7) bond lengths are 2.64 Å. Both Er(2)-C(8) bond lengths are 2.65 Å. Both Er(2)-C(9) bond lengths are 2.77 Å. In the third Er site, Er(3) is bonded in a 6-coordinate geometry to two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. Both Er(3)-C(4) bond lengths are 2.57 Å. Both Er(3)-C(5) bond lengths are 2.53 Å. Both Er(3)-C(7) bond lengths are 2.62 Å. In the fourth Er site, Er(4) is bonded in a 6-coordinate geometry to two equivalent C(3), two equivalent C(6), and two equivalent C(8) atoms. Both Er(4)-C(3) bond lengths are 2.65 Å. Both Er(4)-C(6) bond lengths are 2.52 Å. Both Er(4)-C(8) bond lengths are 2.60 Å. In the fifth Er site, Er(5) is bonded in a 6-coordinate geometry to two equivalent C(3), two equivalent C(6), and two equivalent C(8) atoms. Both Er(5)-C(3) bond lengths are 2.51 Å. Both Er(5)-C(6) bond lengths are 2.55 Å. Both Er(5)-C(8) bond lengths are 2.67 Å. In the sixth Er site, Er(6) is bonded in a 6-coordinate geometry to two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. Both Er(6)-C(4) bond lengths are 2.59 Å. Both Er(6)-C(5) bond lengths are 2.54 Å. Both Er(6)-C(7) bond lengths are 2.65 Å. In the seventh Er site, Er(7) is bonded in a 13-coordinate geometry to two equivalent Ru(1), two equivalent Ru(2), two equivalent Ru(4), one C(1), two equivalent C(3), two equivalent C(5), and two equivalent C(9) atoms. Both Er(7)-Ru(1) bond lengths are 2.81 Å. Both Er(7)-Ru(2) bond lengths are 2.86 Å. Both Er(7)-Ru(4) bond lengths are 2.93 Å. The Er(7)-C(1) bond length is 2.75 Å. Both Er(7)-C(3) bond lengths are 2.52 Å. Both Er(7)-C(5) bond lengths are 2.57 Å. Both Er(7)-C(9) bond lengths are 2.56 Å. In the eighth Er site, Er(8) is bonded in a 13-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), two equivalent Ru(5), one C(1), two equivalent C(10), two equivalent C(4), and two equivalent C(6) atoms. Both Er(8)-Ru(1) bond lengths are 2.80 Å. Both Er(8)-Ru(3) bond lengths are 2.89 Å. Both Er(8)-Ru(5) bond lengths are 2.93 Å. The Er(8)-C(1) bond length is 2.74 Å. Both Er(8)-C(10) bond lengths are 2.56 Å. Both Er(8)-C(4) bond lengths are 2.56 Å. Both Er(8)-C(6) bond lengths are 2.59 Å. In the ninth Er site, Er(9) is bonded in a 8-coordinate geometry to two equivalent C(2), two equivalent C(3), two equivalent C(5), and two equivalent C(9) atoms. Both Er(9)-C(2) bond lengths are 2.59 Å. Both Er(9)-C(3) bond lengths are 2.65 Å. Both Er(9)-C(5) bond lengths are 2.62 Å. Both Er(9)-C(9) bond lengths are 2.59 Å. In the tenth Er site, Er(10) is bonded in a 8-coordinate geometry to two equivalent C(10), two equivalent C(2), two equivalent C(4), and two equivalent C(6) atoms. Both Er(10)-C(10) bond lengths are 2.59 Å. Both Er(10)-C(2) bond lengths are 2.59 Å. Both Er(10)-C(4) bond lengths are 2.61 Å. Both Er(10)-C(6) bond lengths are 2.61 Å. There are five inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 4-coordinate geometry to one Er(7), one Er(8), one C(1), one C(10), one C(2), and one C(9) atom. The Ru(1)-C(1) bond length is 2.24 Å. The Ru(1)-C(10) bond length is 2.14 Å. The Ru(1)-C(2) bond length is 2.10 Å. The Ru(1)-C(9) bond length is 2.14 Å. In the second Ru site, Ru(2) is bonded in a 5-coordinate geometry to one Er(7), one C(3), one C(4), one C(6), one C(7), and one C(9) atom. The Ru(2)-C(3) bond length is 2.08 Å. The Ru(2)-C(4) bond length is 2.18 Å. The Ru(2)-C(6) bond length is 2.23 Å. The Ru(2)-C(7) bond length is 2.25 Å. The Ru(2)-C(9) bond length is 2.24 Å. In the third Ru site, Ru(3) is bonded in a 5-coordinate geometry to one Er(8), one C(10), one C(3), one C(4), one C(5), and one C(8) atom. The Ru(3)-C(10) bond length is 2.25 Å. The Ru(3)-C(3) bond length is 2.18 Å. The Ru(3)-C(4) bond length is 2.08 Å. The Ru(3)-C(5) bond length is 2.23 Å. The Ru(3)-C(8) bond length is 2.26 Å. In the fourth Ru site, Ru(4) is bonded in a 4-coordinate geometry to one Er(7), one C(1), one C(2), one C(5), and one C(7) atom. The Ru(4)-C(1) bond length is 2.21 Å. The Ru(4)-C(2) bond length is 2.07 Å. The Ru(4)-C(5) bond length is 2.12 Å. The Ru(4)-C(7) bond length is 2.13 Å. In the fifth Ru site, Ru(5) is bonded in a 4-coordinate geometry to one Er(8), one C(1), one C(2), one C(6), and one C(8) atom. The Ru(5)-C(1) bond length is 2.22 Å. The Ru(5)-C(2) bond length is 2.07 Å. The Ru(5)-C(6) bond length is 2.12 Å. The Ru(5)-C(8) bond length is 2.13 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a 9-coordinate geometry to one Er(1), one Er(7), one Er(8), two equivalent Ru(1), two equivalent Ru(4), and two equivalent Ru(5) atoms. In the second C site, C(2) is bonded in a 7-coordinate geometry to one Er(10), one Er(2), one Er(9), one Ru(1), one Ru(4), one Ru(5), and one C(2) atom. The C(2)-C(2) bond length is 1.48 Å. In the third C site, C(3) is bonded in a 7-coordinate geometry to one Er(4), one Er(5), one Er(7), one Er(9), one Ru(2), one Ru(3), and one C(5) atom. The C(3)-C(5) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a 7-coordinate geometry to one Er(10), one Er(3), one Er(6), one Er(8), one Ru(2), one Ru(3), and one C(6) atom. The C(4)-C(6) bond length is 1.36 Å. In the fifth C site, C(5) is bonded to one Er(3), one Er(6), one Er(7), one Er(9), one Ru(3), one Ru(4), and one C(3) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the sixth C site, C(6) is bonded to one Er(10), one Er(4), one Er(5), one Er(8), one Ru(2), one Ru(5), and one C(4) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. In the seventh C site, C(7) is bonded to one Er(1), one Er(2), one Er(3), one Er(6), one Ru(2), one Ru(4), and one C(9) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. The C(7)-C(9) bond length is 1.37 Å. In the eighth C site, C(8) is bonded to one Er(1), one Er(2), one Er(4), one Er(5), one Ru(3), one Ru(5), and one C(10) atom to form a mixture of distorted corner, edge, and face-sharing CEr4Ru2C pentagonal bipyramids. The C(8)-C(10) bond length is 1.37 Å. In the ninth C site, C(9) is bonded in a 7-coordinate geometry to one Er(1), one Er(2), one Er(7), one Er(9), one Ru(1), one Ru(2), and one C(7) atom. In the tenth C site, C(10) is bonded in a 7-coordinate geometry to one Er(1), one Er(10), one Er(2), one Er(8), one Ru(1), one Ru(3), and one C(8) atom.