Materials Data on NdFeAsO by Materials Project
NdFeAsO is Parent of FeAs superconductors structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Nd3+ is bonded in a 4-coordinate geometry to four equivalent As3- and four equivalent O2- atoms. All Nd–As bond lengths are 3.38 Å. All Nd–O bond lengths are 2.35 Å. Fe2+ is bonded to four equivalent As3- atoms to form a mixture of corner and edge-sharing FeAs4 tetrahedra. All Fe–As bond lengths are 2.62 Å. As3- is bonded in a 8-coordinate geometry to four equivalent Nd3+ and four equivalent Fe2+ atoms. O2- is bonded to four equivalent Nd3+ atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra.
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