Materials Data on Ho2FeAs2O by Materials Project
Ho2FeAs2O crystallizes in the tetragonal P4/mmm space group. The structure is one-dimensional and consists of one Ho2FeAs2O ribbon oriented in the (0, 0, 1) direction. Ho3+ is bonded in a distorted single-bond geometry to one As3- and one O2- atom. The Ho–As bond length is 2.98 Å. The Ho–O bond length is 2.00 Å. Fe2+ is bonded in a linear geometry to two equivalent As3- atoms. Both Fe–As bond lengths are 2.47 Å. As3- is bonded in a linear geometry to one Ho3+ and one Fe2+ atom. O2- is bonded in a linear geometry to two equivalent Ho3+ atoms.
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