Sc3P2 is Stibnite structured and crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 4-coordinate geometry to two equivalent P(1) and three equivalent P(2) atoms. In the second Sc site, Sc(2) is bonded to two equivalent P(2) and three equivalent P(1) atoms to form a mixture of distorted corner and edge-sharing ScP5 square pyramids. In the third Sc site, Sc(3) is bonded to two equivalent P(1) and three equivalent P(2) atoms to form a mixture of distorted corner and edge-sharing ScP5 square pyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent Sc(1), two equivalent Sc(3), and three equivalent Sc(2) atoms to form a mixture of distorted corner and edge-sharing PSc7 pentagonal bipyramids. In the second P site, P(2) is bonded in a 8-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), and three equivalent Sc(3) atoms.
Sc3P2 is Stibnite structured and crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 4-coordinate geometry to two equivalent P(1) and three equivalent P(2) atoms. There is one shorter (2.69 Å) and one longer (2.70 Å) Sc(1)-P(1) bond length. There are two shorter (2.75 Å) and one longer (3.19 Å) Sc(1)-P(2) bond length. In the second Sc site, Sc(2) is bonded to two equivalent P(2) and three equivalent P(1) atoms to form a mixture of distorted corner and edge-sharing ScP5 square pyramids. Both Sc(2)-P(2) bond lengths are 2.75 Å. There are two shorter (2.61 Å) and one longer (2.70 Å) Sc(2)-P(1) bond length. In the third Sc site, Sc(3) is bonded to two equivalent P(1) and three equivalent P(2) atoms to form a mixture of distorted corner and edge-sharing ScP5 square pyramids. Both Sc(3)-P(1) bond lengths are 2.68 Å. All Sc(3)-P(2) bond lengths are 2.71 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent Sc(1), two equivalent Sc(3), and three equivalent Sc(2) atoms to form a mixture of distorted corner and edge-sharing PSc7 pentagonal bipyramids. In the second P site, P(2) is bonded in a 8-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), and three equivalent Sc(3) atoms.