ErScGe crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(2), two equivalent Ge(1), and two equivalent Ge(3) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(2), two equivalent Ge(1), and two equivalent Ge(4) atoms. In the third Er site, Er(3) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(4), two equivalent Ge(1), and two equivalent Ge(3) atoms. In the fourth Er site, Er(4) is bonded in a 7-coordinate geometry to one Ge(4), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 4-coordinate geometry to two equivalent Sc(2), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms. In the second Sc site, Sc(2) is bonded in a 13-coordinate geometry to one Er(2), two equivalent Er(1), two equivalent Er(3), four equivalent Sc(1), two equivalent Ge(1), and two equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to one Er(2), one Er(4), two equivalent Er(1), two equivalent Er(3), and two equivalent Sc(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Er(2), two equivalent Er(1), two equivalent Er(4), and four equivalent Sc(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Er(4), two equivalent Er(1), two equivalent Er(3), two equivalent Sc(2), and four equivalent Sc(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Er(4), two equivalent Er(2), two equivalent Er(3), and four equivalent Sc(1) atoms.
ErScGe crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(2), two equivalent Ge(1), and two equivalent Ge(3) atoms. There is one shorter (3.03 Å) and one longer (3.26 Å) Er(1)-Sc(2) bond length. The Er(1)-Ge(2) bond length is 2.90 Å. Both Er(1)-Ge(1) bond lengths are 2.79 Å. Both Er(1)-Ge(3) bond lengths are 3.26 Å. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(2), two equivalent Ge(1), and two equivalent Ge(4) atoms. Both Er(2)-Sc(2) bond lengths are 3.05 Å. The Er(2)-Ge(2) bond length is 2.88 Å. Both Er(2)-Ge(1) bond lengths are 2.85 Å. Both Er(2)-Ge(4) bond lengths are 3.19 Å. In the third Er site, Er(3) is bonded in a 7-coordinate geometry to two equivalent Sc(2), one Ge(4), two equivalent Ge(1), and two equivalent Ge(3) atoms. Both Er(3)-Sc(2) bond lengths are 3.22 Å. The Er(3)-Ge(4) bond length is 3.05 Å. Both Er(3)-Ge(1) bond lengths are 2.80 Å. There is one shorter (2.92 Å) and one longer (3.26 Å) Er(3)-Ge(3) bond length. In the fourth Er site, Er(4) is bonded in a 7-coordinate geometry to one Ge(4), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Er(4)-Ge(4) bond length is 3.11 Å. Both Er(4)-Ge(1) bond lengths are 3.02 Å. Both Er(4)-Ge(2) bond lengths are 3.26 Å. Both Er(4)-Ge(3) bond lengths are 3.03 Å. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 4-coordinate geometry to two equivalent Sc(2), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms. There is one shorter (3.19 Å) and one longer (3.27 Å) Sc(1)-Sc(2) bond length. The Sc(1)-Ge(2) bond length is 2.95 Å. The Sc(1)-Ge(4) bond length is 2.96 Å. There is one shorter (3.11 Å) and one longer (3.25 Å) Sc(1)-Ge(3) bond length. In the second Sc site, Sc(2) is bonded in a 13-coordinate geometry to one Er(2), two equivalent Er(1), two equivalent Er(3), four equivalent Sc(1), two equivalent Ge(1), and two equivalent Ge(3) atoms. Both Sc(2)-Ge(1) bond lengths are 3.59 Å. Both Sc(2)-Ge(3) bond lengths are 3.56 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to one Er(2), one Er(4), two equivalent Er(1), two equivalent Er(3), and two equivalent Sc(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Er(2), two equivalent Er(1), two equivalent Er(4), and four equivalent Sc(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Er(4), two equivalent Er(1), two equivalent Er(3), two equivalent Sc(2), and four equivalent Sc(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Er(4), two equivalent Er(2), two equivalent Er(3), and four equivalent Sc(1) atoms.