SrMn(PO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(8), two equivalent O(1), and two equivalent O(6) atoms. Mn(1) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(7) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Mn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in an L-shaped geometry to one Mn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), two equivalent Mn(1), and one P(2) atom.
SrMn(PO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(8), two equivalent O(1), and two equivalent O(6) atoms. The Sr(1)-O(2) bond length is 2.42 Å. The Sr(1)-O(3) bond length is 3.00 Å. The Sr(1)-O(4) bond length is 2.72 Å. The Sr(1)-O(8) bond length is 3.12 Å. There is one shorter (2.46 Å) and one longer (2.65 Å) Sr(1)-O(1) bond length. There is one shorter (2.57 Å) and one longer (2.75 Å) Sr(1)-O(6) bond length. Mn(1) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms. The Mn(1)-O(3) bond length is 1.90 Å. The Mn(1)-O(4) bond length is 2.00 Å. The Mn(1)-O(5) bond length is 1.92 Å. The Mn(1)-O(7) bond length is 1.85 Å. There is one shorter (1.99 Å) and one longer (2.64 Å) Mn(1)-O(8) bond length. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(7) atom. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.60 Å. The P(1)-O(7) bond length is 1.58 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(8) atom. The P(2)-O(4) bond length is 1.58 Å. The P(2)-O(5) bond length is 1.59 Å. The P(2)-O(6) bond length is 1.51 Å. The P(2)-O(8) bond length is 1.58 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Mn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in an L-shaped geometry to one Mn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), two equivalent Mn(1), and one P(2) atom.