Materials Data on Sr2Ti2Bi2OF2 by Materials Project
Sr2Ti2Bi2OF2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr is bonded in a 4-coordinate geometry to four equivalent Bi and four equivalent F atoms. All Sr–Bi bond lengths are 3.51 Å. All Sr–F bond lengths are 2.51 Å. Ti is bonded in a linear geometry to four equivalent Bi and two equivalent O atoms. All Ti–Bi bond lengths are 2.98 Å. Both Ti–O bond lengths are 2.06 Å. Bi is bonded in a 8-coordinate geometry to four equivalent Sr and four equivalent Ti atoms. O is bonded in a square co-planar geometry to four equivalent Ti atoms. F is bonded to four equivalent Sr atoms to form a mixture of edge and corner-sharing FSr4 tetrahedra.
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