Materials Data on TmAsO4 by Materials Project
TmAsO4 is Zircon structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Tm3+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. There are four shorter (2.29 Å) and four longer (2.39 Å) Tm–O bond lengths. As5+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All As–O bond lengths are 1.72 Å. O2- is bonded in a 3-coordinate geometry to two equivalent Tm3+ and one As5+ atom.
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