Materials Data on KAlTe2 by Materials Project
KAlTe2 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to two equivalent K1+ and eight equivalent Te2- atoms. Both K–K bond lengths are 3.51 Å. All K–Te bond lengths are 3.72 Å. Al3+ is bonded to four equivalent Te2- atoms to form edge-sharing AlTe4 tetrahedra. All Al–Te bond lengths are 2.67 Å. Te2- is bonded in a 2-coordinate geometry to four equivalent K1+ and two equivalent Al3+ atoms.
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