Materials Data on Er12Ga9Ge11 by Materials Project
Er12Ga9Ge11 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are five inequivalent Er sites. In the first Er site, Er is bonded in a 5-coordinate geometry to five Ga and four equivalent Ge atoms. There are a spread of Er–Ga bond distances ranging from 2.82–3.10 Å. There are two shorter (2.95 Å) and two longer (3.31 Å) Er–Ge bond lengths. In the second Er site, Er is bonded in a 5-coordinate geometry to four Ga and five Ge atoms. There are two shorter (2.82 Å) and two longer (3.10 Å) Er–Ga bond lengths. There are a spread of Er–Ge bond distances ranging from 2.88–3.31 Å. In the third Er site, Er is bonded in a 5-coordinate geometry to four Ga and five Ge atoms. There are a spread of Er–Ga bond distances ranging from 2.82–3.10 Å. There are a spread of Er–Ge bond distances ranging from 2.87–3.31 Å. In the fourth Er site, Er is bonded in a 10-coordinate geometry to five Ga and five Ge atoms. There are a spread of Er–Ga bond distances ranging from 3.00–3.16 Å. There are a spread of Er–Ge bond distances ranging from 2.95–3.19 Å. In the fifth Er site, Er is bonded in a 10-coordinate geometry to four Ga and six Ge atoms. There are a spread of Er–Ga bond distances ranging from 3.07–3.15 Å. There are a spread of Er–Ge bond distances ranging from 2.96–3.19 Å. There are five inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to five Er, two equivalent Ga, and two equivalent Ge atoms. Both Ga–Ga bond lengths are 2.78 Å. Both Ga–Ge bond lengths are 2.66 Å. In the second Ga site, Ga is bonded in a 10-coordinate geometry to six Er, two Ga, and two equivalent Ge atoms. The Ga–Ga bond length is 2.84 Å. Both Ga–Ge bond lengths are 2.67 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to six Er, one Ga, and three Ge atoms. The Ga–Ga bond length is 2.81 Å. There are two shorter (2.68 Å) and one longer (2.82 Å) Ga–Ge bond lengths. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to six Er, one Ga, and three Ge atoms. There are two shorter (2.68 Å) and one longer (2.81 Å) Ga–Ge bond lengths. In the fifth Ga site, Ga is bonded in a 10-coordinate geometry to six Er, one Ga, and three Ge atoms. There are two shorter (2.68 Å) and one longer (2.82 Å) Ga–Ge bond lengths. There are five inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to six Er and three Ga atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Er, two equivalent Ga, and one Ge atom. The Ge–Ge bond length is 2.67 Å. In the third Ge site, Ge is bonded in a 9-coordinate geometry to six Er, two Ga, and one Ge atom. The Ge–Ge bond length is 2.67 Å. In the fourth Ge site, Ge is bonded in a 9-coordinate geometry to five Er, two equivalent Ga, and two equivalent Ge atoms. In the fifth Ge site, Ge is bonded in a 9-coordinate geometry to five Er, two Ga, and two equivalent Ge atoms.