Ce2Pt8P crystallizes in the orthorhombic Amm2 space group. Ce(1) is bonded in a 17-coordinate geometry to two equivalent Pt(4), two equivalent Pt(5), three equivalent Pt(3), four equivalent Pt(1), four equivalent Pt(2), and two equivalent P(1) atoms. There are five inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted single-bond geometry to four equivalent Ce(1), two equivalent Pt(2), two equivalent Pt(3), and one P(1) atom. In the second Pt site, Pt(2) is bonded to four equivalent Ce(1), two equivalent Pt(1), two equivalent Pt(2), and four equivalent Pt(3) atoms to form a mixture of face, corner, and edge-sharing PtCe4Pt8 cuboctahedra. In the third Pt site, Pt(3) is bonded in a 9-coordinate geometry to three equivalent Ce(1), two equivalent Pt(1), and four equivalent Pt(2) atoms. In the fourth Pt site, Pt(4) is bonded in a 2-coordinate geometry to four equivalent Ce(1) and two equivalent P(1) atoms. In the fifth Pt site, Pt(5) is bonded in a 5-coordinate geometry to four equivalent Ce(1) and one P(1) atom. P(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1), one Pt(5), two equivalent Pt(1), and two equivalent Pt(4) atoms.
Ce2Pt8P crystallizes in the orthorhombic Amm2 space group. Ce(1) is bonded in a 17-coordinate geometry to two equivalent Pt(4), two equivalent Pt(5), three equivalent Pt(3), four equivalent Pt(1), four equivalent Pt(2), and two equivalent P(1) atoms. There is one shorter (3.43 Å) and one longer (3.52 Å) Ce(1)-Pt(4) bond length. Both Ce(1)-Pt(5) bond lengths are 3.13 Å. There are a spread of Ce(1)-Pt(3) bond distances ranging from 3.01-3.06 Å. There are two shorter (3.44 Å) and two longer (3.49 Å) Ce(1)-Pt(1) bond lengths. There are two shorter (3.30 Å) and two longer (3.40 Å) Ce(1)-Pt(2) bond lengths. Both Ce(1)-P(1) bond lengths are 3.38 Å. There are five inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted single-bond geometry to four equivalent Ce(1), two equivalent Pt(2), two equivalent Pt(3), and one P(1) atom. There is one shorter (2.79 Å) and one longer (2.81 Å) Pt(1)-Pt(2) bond length. Both Pt(1)-Pt(3) bond lengths are 2.66 Å. The Pt(1)-P(1) bond length is 2.27 Å. In the second Pt site, Pt(2) is bonded to four equivalent Ce(1), two equivalent Pt(1), two equivalent Pt(2), and four equivalent Pt(3) atoms to form a mixture of face, corner, and edge-sharing PtCe4Pt8 cuboctahedra. Both Pt(2)-Pt(2) bond lengths are 2.71 Å. There are two shorter (2.67 Å) and two longer (2.68 Å) Pt(2)-Pt(3) bond lengths. In the third Pt site, Pt(3) is bonded in a 9-coordinate geometry to three equivalent Ce(1), two equivalent Pt(1), and four equivalent Pt(2) atoms. In the fourth Pt site, Pt(4) is bonded in a 2-coordinate geometry to four equivalent Ce(1) and two equivalent P(1) atoms. Both Pt(4)-P(1) bond lengths are 2.44 Å. In the fifth Pt site, Pt(5) is bonded in a 5-coordinate geometry to four equivalent Ce(1) and one P(1) atom. The Pt(5)-P(1) bond length is 2.21 Å. P(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1), one Pt(5), two equivalent Pt(1), and two equivalent Pt(4) atoms.