Tm2Ni12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 15-coordinate geometry to three equivalent Ni(3), six equivalent Ni(1), and six equivalent P(2) atoms. In the second Tm site, Tm(2) is bonded in a 18-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), six equivalent Ni(3), and six equivalent P(3) atoms. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to one Tm(2), two equivalent Tm(1), two equivalent P(2), and two equivalent P(3) atoms. In the second Ni site, Ni(2) is bonded to one Tm(2), one P(1), one P(2), and two equivalent P(3) atoms to form distorted NiTmP4 tetrahedra that share corners with two equivalent Ni(3)Tm3P4 tetrahedra, corners with six equivalent Ni(2)TmP4 tetrahedra, edges with two equivalent Ni(3)Tm3P4 tetrahedra, and faces with two equivalent Ni(3)Tm3P4 tetrahedra. In the third Ni site, Ni(3) is bonded to one Tm(1), two equivalent Tm(2), two equivalent P(2), and two equivalent P(3) atoms to form distorted NiTm3P4 tetrahedra that share corners with two equivalent Ni(2)TmP4 tetrahedra, corners with six equivalent Ni(3)Tm3P4 tetrahedra, edges with two equivalent Ni(3)Tm3P4 tetrahedra, edges with two equivalent Ni(2)TmP4 tetrahedra, faces with two equivalent Ni(3)Tm3P4 tetrahedra, and faces with two equivalent Ni(2)TmP4 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one P(3), two equivalent P(1), and two equivalent P(2) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Ni(2) and six equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Tm(1), one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Tm(2), one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms.
Tm2Ni12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 15-coordinate geometry to three equivalent Ni(3), six equivalent Ni(1), and six equivalent P(2) atoms. All Tm(1)-Ni(3) bond lengths are 3.09 Å. All Tm(1)-Ni(1) bond lengths are 2.91 Å. All Tm(1)-P(2) bond lengths are 2.83 Å. In the second Tm site, Tm(2) is bonded in a 18-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), six equivalent Ni(3), and six equivalent P(3) atoms. All Tm(2)-Ni(1) bond lengths are 3.19 Å. All Tm(2)-Ni(2) bond lengths are 3.04 Å. All Tm(2)-Ni(3) bond lengths are 2.97 Å. All Tm(2)-P(3) bond lengths are 2.84 Å. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to one Tm(2), two equivalent Tm(1), two equivalent P(2), and two equivalent P(3) atoms. There is one shorter (2.21 Å) and one longer (2.23 Å) Ni(1)-P(2) bond length. Both Ni(1)-P(3) bond lengths are 2.31 Å. In the second Ni site, Ni(2) is bonded to one Tm(2), one P(1), one P(2), and two equivalent P(3) atoms to form distorted NiTmP4 tetrahedra that share corners with two equivalent Ni(3)Tm3P4 tetrahedra, corners with six equivalent Ni(2)TmP4 tetrahedra, edges with two equivalent Ni(3)Tm3P4 tetrahedra, and faces with two equivalent Ni(3)Tm3P4 tetrahedra. The Ni(2)-P(1) bond length is 2.14 Å. The Ni(2)-P(2) bond length is 2.21 Å. Both Ni(2)-P(3) bond lengths are 2.29 Å. In the third Ni site, Ni(3) is bonded to one Tm(1), two equivalent Tm(2), two equivalent P(2), and two equivalent P(3) atoms to form distorted NiTm3P4 tetrahedra that share corners with two equivalent Ni(2)TmP4 tetrahedra, corners with six equivalent Ni(3)Tm3P4 tetrahedra, edges with two equivalent Ni(3)Tm3P4 tetrahedra, edges with two equivalent Ni(2)TmP4 tetrahedra, faces with two equivalent Ni(3)Tm3P4 tetrahedra, and faces with two equivalent Ni(2)TmP4 tetrahedra. Both Ni(3)-P(2) bond lengths are 2.27 Å. There is one shorter (2.23 Å) and one longer (2.31 Å) Ni(3)-P(3) bond length. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one P(3), two equivalent P(1), and two equivalent P(2) atoms. The Ni(4)-P(3) bond length is 2.27 Å. Both Ni(4)-P(1) bond lengths are 2.48 Å. Both Ni(4)-P(2) bond lengths are 2.54 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Ni(2) and six equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Tm(1), one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Tm(2), one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms.