Eu2Ni12P5 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Ni(10), two equivalent P(3), and two equivalent P(5) atoms. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one P(5), two equivalent P(1), two equivalent P(2), and two equivalent P(4) atoms. There are twelve inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 2-coordinate geometry to two equivalent Eu(1), one P(2), and one P(5) atom. In the second Ni site, Ni(2) is bonded in a 3-coordinate geometry to one P(3) and two equivalent P(4) atoms. In the third Ni site, Ni(3) is bonded in a distorted water-like geometry to two equivalent P(2) atoms. In the fourth Ni site, Ni(4) is bonded in a distorted water-like geometry to two equivalent P(4) atoms. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(3) atoms. In the sixth Ni site, Ni(6) is bonded in a 4-coordinate geometry to one P(2) and three equivalent P(1) atoms. In the seventh Ni site, Ni(7) is bonded in a distorted trigonal non-coplanar geometry to three equivalent P(3) atoms. In the eighth Ni site, Ni(8) is bonded in a 3-coordinate geometry to one P(1) and two equivalent P(2) atoms. In the ninth Ni site, Ni(9) is bonded in a distorted trigonal planar geometry to one P(4) and two equivalent P(5) atoms. In the tenth Ni site, Ni(10) is bonded in a 2-coordinate geometry to two equivalent Eu(1), one P(4), and one P(5) atom. In the eleventh Ni site, Ni(11) is bonded in a distorted trigonal planar geometry to one P(2) and two equivalent P(5) atoms. In the twelfth Ni site, Ni(12) is bonded in a distorted trigonal non-coplanar geometry to one P(3) and two equivalent P(1) atoms. There are five inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(5), one Ni(8), two equivalent Ni(12), and three equivalent Ni(6) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(1), one Ni(11), one Ni(6), two equivalent Ni(3), and two equivalent Ni(8) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Ni(12), one Ni(2), two equivalent Ni(5), and three equivalent Ni(7) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(10), one Ni(5), one Ni(9), two equivalent Ni(2), and two equivalent Ni(4) atoms. In the fifth P site, P(5) is bonded in a 9-coordinate geometry to one Eu(2), two equivalent Eu(1), one Ni(1), one Ni(10), two equivalent Ni(11), and two equivalent Ni(9) atoms.
Eu2Ni12P5 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Ni(10), two equivalent P(3), and two equivalent P(5) atoms. Both Eu(1)-Ni(1) bond lengths are 3.00 Å. Both Eu(1)-Ni(10) bond lengths are 3.02 Å. Both Eu(1)-P(3) bond lengths are 2.97 Å. Both Eu(1)-P(5) bond lengths are 3.00 Å. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one P(5), two equivalent P(1), two equivalent P(2), and two equivalent P(4) atoms. The Eu(2)-P(5) bond length is 3.09 Å. Both Eu(2)-P(1) bond lengths are 3.11 Å. Both Eu(2)-P(2) bond lengths are 3.08 Å. Both Eu(2)-P(4) bond lengths are 3.12 Å. There are twelve inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 2-coordinate geometry to two equivalent Eu(1), one P(2), and one P(5) atom. The Ni(1)-P(2) bond length is 2.20 Å. The Ni(1)-P(5) bond length is 2.29 Å. In the second Ni site, Ni(2) is bonded in a 3-coordinate geometry to one P(3) and two equivalent P(4) atoms. The Ni(2)-P(3) bond length is 2.15 Å. Both Ni(2)-P(4) bond lengths are 2.32 Å. In the third Ni site, Ni(3) is bonded in a distorted water-like geometry to two equivalent P(2) atoms. Both Ni(3)-P(2) bond lengths are 2.31 Å. In the fourth Ni site, Ni(4) is bonded in a distorted water-like geometry to two equivalent P(4) atoms. Both Ni(4)-P(4) bond lengths are 2.27 Å. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one P(1), one P(4), and two equivalent P(3) atoms. The Ni(5)-P(1) bond length is 2.22 Å. The Ni(5)-P(4) bond length is 2.27 Å. Both Ni(5)-P(3) bond lengths are 2.41 Å. In the sixth Ni site, Ni(6) is bonded in a 4-coordinate geometry to one P(2) and three equivalent P(1) atoms. The Ni(6)-P(2) bond length is 2.30 Å. There is one shorter (2.21 Å) and two longer (2.42 Å) Ni(6)-P(1) bond lengths. In the seventh Ni site, Ni(7) is bonded in a distorted trigonal non-coplanar geometry to three equivalent P(3) atoms. There is one shorter (2.20 Å) and two longer (2.34 Å) Ni(7)-P(3) bond lengths. In the eighth Ni site, Ni(8) is bonded in a 3-coordinate geometry to one P(1) and two equivalent P(2) atoms. The Ni(8)-P(1) bond length is 2.18 Å. Both Ni(8)-P(2) bond lengths are 2.31 Å. In the ninth Ni site, Ni(9) is bonded in a distorted trigonal planar geometry to one P(4) and two equivalent P(5) atoms. The Ni(9)-P(4) bond length is 2.26 Å. Both Ni(9)-P(5) bond lengths are 2.30 Å. In the tenth Ni site, Ni(10) is bonded in a 2-coordinate geometry to two equivalent Eu(1), one P(4), and one P(5) atom. The Ni(10)-P(4) bond length is 2.21 Å. The Ni(10)-P(5) bond length is 2.29 Å. In the eleventh Ni site, Ni(11) is bonded in a distorted trigonal planar geometry to one P(2) and two equivalent P(5) atoms. The Ni(11)-P(2) bond length is 2.28 Å. Both Ni(11)-P(5) bond lengths are 2.30 Å. In the twelfth Ni site, Ni(12) is bonded in a distorted trigonal non-coplanar geometry to one P(3) and two equivalent P(1) atoms. The Ni(12)-P(3) bond length is 2.19 Å. Both Ni(12)-P(1) bond lengths are 2.32 Å. There are five inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(5), one Ni(8), two equivalent Ni(12), and three equivalent Ni(6) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(1), one Ni(11), one Ni(6), two equivalent Ni(3), and two equivalent Ni(8) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Ni(12), one Ni(2), two equivalent Ni(5), and three equivalent Ni(7) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to two equivalent Eu(2), one Ni(10), one Ni(5), one Ni(9), two equivalent Ni(2), and two equivalent Ni(4) atoms. In the fifth P site, P(5) is bonded in a 9-coordinate geometry to one Eu(2), two equivalent Eu(1), one Ni(1), one Ni(10), two equivalent Ni(11), and two equivalent Ni(9) atoms.