Materials Data on Pr2ZnAs4 by Materials Project
Pr2ZnAs4 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight As2- atoms. There are four shorter (3.04 Å) and four longer (3.20 Å) Pr–As bond lengths. Zn2+ is bonded to four equivalent As2- atoms to form corner-sharing ZnAs4 tetrahedra. All Zn–As bond lengths are 2.53 Å. There are two inequivalent As2- sites. In the first As2- site, As2- is bonded in a 6-coordinate geometry to four equivalent Pr3+ and two equivalent Zn2+ atoms. In the second As2- site, As2- is bonded in a 8-coordinate geometry to four equivalent Pr3+ and four equivalent As2- atoms. All As–As bond lengths are 2.82 Å.
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