Materials Data on Yb2AlSi2 by Materials Project
Yb2AlSi2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Yb+2.50+ is bonded in a distorted hexagonal planar geometry to six equivalent Si4- atoms. There are two shorter (3.01 Å) and four longer (3.08 Å) Yb–Si bond lengths. Al3+ is bonded in a square co-planar geometry to four equivalent Si4- atoms. All Al–Si bond lengths are 2.70 Å. Si4- is bonded in a 9-coordinate geometry to six equivalent Yb+2.50+, two equivalent Al3+, and one Si4- atom. The Si–Si bond length is 2.38 Å.
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