SrCa4P3O12F crystallizes in the hexagonal P6_3 space group. Sr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. In the second Ca site, Ca(2) is bonded to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and one F(1) atom to form distorted CaO6F pentagonal bipyramids that share corners with six equivalent Ca(2)O6F pentagonal bipyramids, corners with four equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Ca(2)O6F pentagonal bipyramids and  an edgeedge with one Ca(2)O6F pentagonal bipyramid. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 1-coordinate geometry to one Ca(1), two equivalent Ca(2), and one P(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), and one P(1) atom. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Ca(2), and one P(1) atom. In the fourth O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), and one P(1) atom. F(1) is bonded in a trigonal planar geometry to three equivalent Ca(2) atoms.
SrCa4P3O12F crystallizes in the hexagonal P6_3 space group. Sr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. All Sr(1)-O(1) bond lengths are 2.53 Å. All Sr(1)-O(2) bond lengths are 2.80 Å. All Sr(1)-O(3) bond lengths are 2.59 Å. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. All Ca(1)-O(1) bond lengths are 2.42 Å. All Ca(1)-O(3) bond lengths are 2.49 Å. All Ca(1)-O(4) bond lengths are 2.91 Å. In the second Ca site, Ca(2) is bonded to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and one F(1) atom to form distorted CaO6F pentagonal bipyramids that share corners with six equivalent Ca(2)O6F pentagonal bipyramids, corners with four equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The Ca(2)-O(1) bond length is 2.71 Å. The Ca(2)-O(3) bond length is 2.38 Å. There is one shorter (2.42 Å) and one longer (2.49 Å) Ca(2)-O(2) bond length. There is one shorter (2.42 Å) and one longer (2.47 Å) Ca(2)-O(4) bond length. The Ca(2)-F(1) bond length is 2.34 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Ca(2)O6F pentagonal bipyramids and  an edgeedge with one Ca(2)O6F pentagonal bipyramid. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(2) bond length is 1.56 Å. The P(1)-O(3) bond length is 1.56 Å. The P(1)-O(4) bond length is 1.55 Å. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 1-coordinate geometry to one Ca(1), two equivalent Ca(2), and one P(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), and one P(1) atom. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Ca(2), and one P(1) atom. In the fourth O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), and one P(1) atom. F(1) is bonded in a trigonal planar geometry to three equivalent Ca(2) atoms.