Materials Data on La(CoAs)2 by Materials Project
LaCo2As2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. La3+ is bonded in a body-centered cubic geometry to eight equivalent As3- atoms. All La–As bond lengths are 3.22 Å. Co+1.50+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing CoAs4 tetrahedra. All Co–As bond lengths are 2.35 Å. As3- is bonded in a 9-coordinate geometry to four equivalent La3+ and four equivalent Co+1.50+ atoms.
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