Materials Data on EuAl2Ge by Materials Project
EuAl2Ge crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Eu is bonded in a 5-coordinate geometry to four equivalent Al and three equivalent Ge atoms. There are two shorter (3.20 Å) and two longer (3.37 Å) Eu–Al bond lengths. There are two shorter (3.13 Å) and one longer (3.17 Å) Eu–Ge bond lengths. There are two inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to three equivalent Al and two equivalent Ge atoms. There are one shorter (2.62 Å) and two longer (2.72 Å) Al–Al bond lengths. Both Al–Ge bond lengths are 2.64 Å. In the second Al site, Al is bonded in a 2-coordinate geometry to four equivalent Eu, three equivalent Al, and two equivalent Ge atoms. There are one shorter (2.50 Å) and one longer (2.60 Å) Al–Ge bond lengths. Ge is bonded in a 7-coordinate geometry to three equivalent Eu and four Al atoms.