Materials Data on CeGaNi by Materials Project
CeNiGa crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Ce is bonded in a 11-coordinate geometry to five Ni and six equivalent Ga atoms. There are four shorter (2.87 Å) and one longer (2.90 Å) Ce–Ni bond lengths. There are two shorter (3.09 Å) and four longer (3.22 Å) Ce–Ga bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a distorted q6 geometry to three equivalent Ce and six equivalent Ga atoms. All Ni–Ga bond lengths are 2.58 Å. In the second Ni site, Ni is bonded in a 9-coordinate geometry to six equivalent Ce and three equivalent Ga atoms. All Ni–Ga bond lengths are 2.69 Å. Ga is bonded to six equivalent Ce, four Ni, and two equivalent Ga atoms to form a mixture of distorted edge, corner, and face-sharing GaCe6Ga2Ni4 cuboctahedra. Both Ga–Ga bond lengths are 2.84 Å.