Ga(Ni3Si)2 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to one Ni(13), one Ni(18), two equivalent Ni(19), two equivalent Ni(22), two equivalent Ni(4), one Ga(3), two equivalent Si(3), and two equivalent Si(6) atoms. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to one Ni(14), one Ni(16), two equivalent Ni(20), two equivalent Ni(23), two equivalent Ni(5), one Ga(1), two equivalent Si(4), and two equivalent Si(7) atoms. In the third Ni site, Ni(3) is bonded in a 13-coordinate geometry to one Ni(15), one Ni(17), two equivalent Ni(21), two equivalent Ni(24), two equivalent Ni(6), one Ga(2), two equivalent Si(5), and two equivalent Si(8) atoms. In the fourth Ni site, Ni(4) is bonded in a 13-coordinate geometry to one Ni(13), one Ni(18), two equivalent Ni(1), two equivalent Ni(19), two equivalent Ni(22), one Ga(4), two equivalent Si(3), and two equivalent Si(6) atoms. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to one Ni(14), one Ni(16), two equivalent Ni(2), two equivalent Ni(20), two equivalent Ni(23), one Si(1), two equivalent Si(4), and two equivalent Si(7) atoms. In the sixth Ni site, Ni(6) is bonded in a 13-coordinate geometry to one Ni(15), one Ni(17), two equivalent Ni(21), two equivalent Ni(24), two equivalent Ni(3), one Si(2), two equivalent Si(5), and two equivalent Si(8) atoms. In the seventh Ni site, Ni(7) is bonded in a 5-coordinate geometry to two equivalent Ni(10), two equivalent Ni(13), two equivalent Ni(16), two equivalent Ga(1), two equivalent Ga(4), and one Si(4) atom. In the eighth Ni site, Ni(8) is bonded in a 13-coordinate geometry to one Ni(20), one Ni(24), two equivalent Ni(11), two equivalent Ni(14), two equivalent Ni(17), two equivalent Ga(2), one Si(5), and two equivalent Si(1) atoms. In the ninth Ni site, Ni(9) is bonded in a 13-coordinate geometry to one Ni(21), one Ni(22), two equivalent Ni(12), two equivalent Ni(15), two equivalent Ni(18), two equivalent Ga(3), one Si(3), and two equivalent Si(2) atoms. In the tenth Ni site, Ni(10) is bonded in a 13-coordinate geometry to one Ni(19), one Ni(23), two equivalent Ni(13), two equivalent Ni(16), two equivalent Ni(7), two equivalent Ga(1), two equivalent Ga(4), and one Si(6) atom. In the eleventh Ni site, Ni(11) is bonded in a 13-coordinate geometry to one Ni(20), one Ni(24), two equivalent Ni(14), two equivalent Ni(17), two equivalent Ni(8), two equivalent Ga(2), one Si(7), and two equivalent Si(1) atoms. In the twelfth Ni site, Ni(12) is bonded in a 13-coordinate geometry to one Ni(21), one Ni(22), two equivalent Ni(15), two equivalent Ni(18), two equivalent Ni(9), two equivalent Ga(3), one Si(8), and two equivalent Si(2) atoms. In the thirteenth Ni site, Ni(13) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(10), two equivalent Ni(19), two equivalent Ni(7), one Ga(1), two equivalent Ga(4), and two equivalent Si(6) atoms. In the fourteenth Ni site, Ni(14) is bonded in a 13-coordinate geometry to one Ni(2), one Ni(5), two equivalent Ni(11), two equivalent Ni(20), two equivalent Ni(8), one Ga(2), two equivalent Si(1), and two equivalent Si(7) atoms. In the fifteenth Ni site, Ni(15) is bonded in a 13-coordinate geometry to one Ni(3), one Ni(6), two equivalent Ni(12), two equivalent Ni(21), two equivalent Ni(9), one Ga(3), two equivalent Si(2), and two equivalent Si(8) atoms. In the sixteenth Ni site, Ni(16) is bonded in a 13-coordinate geometry to one Ni(2), one Ni(5), two equivalent Ni(10), two equivalent Ni(23), two equivalent Ni(7), one Ga(4), two equivalent Ga(1), and two equivalent Si(4) atoms. In the seventeenth Ni site, Ni(17) is bonded in a 13-coordinate geometry to one Ni(3), one Ni(6), two equivalent Ni(11), two equivalent Ni(24), two equivalent Ni(8), two equivalent Ga(2), one Si(1), and two equivalent Si(5) atoms. In the eighteenth Ni site, Ni(18) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(12), two equivalent Ni(22), two equivalent Ni(9), two equivalent Ga(3), one Si(2), and two equivalent Si(3) atoms. In the nineteenth Ni site, Ni(19) is bonded in a 4-coordinate geometry to one Ni(10), two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(4), two equivalent Ga(4), one Si(3), and two equivalent Si(6) atoms. In the twentieth Ni site, Ni(20) is bonded in a 13-coordinate geometry to one Ni(11), one Ni(8), two equivalent Ni(14), two equivalent Ni(2), two equivalent Ni(5), one Si(4), two equivalent Si(1), and two equivalent Si(7) atoms. In the twenty-first Ni site, Ni(21) is bonded in a 13-coordinate geometry to one Ni(12), one Ni(9), two equivalent Ni(15), two equivalent Ni(3), two equivalent Ni(6), one Si(5), two equivalent Si(2), and two equivalent Si(8) atoms. In the twenty-second Ni site, Ni(22) is bonded in a 4-coordinate geometry to one Ni(12), one Ni(9), two equivalent Ni(1), two equivalent Ni(18), two equivalent Ni(4), two equivalent Ga(3), one Si(6), and two equivalent Si(3) atoms. In the twenty-third Ni site, Ni(23) is bonded in a 4-coordinate geometry to one Ni(10), two equivalent Ni(16), two equivalent Ni(2), two equivalent Ni(5), two equivalent Ga(1), one Si(7), and two equivalent Si(4) atoms. In the twenty-fourth Ni site, Ni(24) is bonded in a 4-coordinate geometry to one Ni(11), one Ni(8), two equivalent Ni(17), two equivalent Ni(3), two equivalent Ni(6), two equivalent Ga(2), one Si(8), and two equivalent Si(5) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Ni(13), one Ni(2), two equivalent Ni(10), two equivalent Ni(16), two equivalent Ni(23), and two equivalent Ni(7) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Ni(14), one Ni(3), two equivalent Ni(11), two equivalent Ni(17), two equivalent Ni(24), and two equivalent Ni(8) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Ni(1), one Ni(15), two equivalent Ni(12), two equivalent Ni(18), two equivalent Ni(22), and two equivalent Ni(9) atoms. In the fourth Ga site, Ga(4) is bonded in a 10-coordinate geometry to one Ni(16), one Ni(4), two equivalent Ni(10), two equivalent Ni(13), two equivalent Ni(19), and two equivalent Ni(7) atoms. There are eight inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Ni(17), one Ni(5), two equivalent Ni(11), two equivalent Ni(14), two equivalent Ni(20), and two equivalent Ni(8) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Ni(18), one Ni(6), two equivalent Ni(12), two equivalent Ni(15), two equivalent Ni(21), and two equivalent Ni(9) atoms. In the third Si site, Si(3) is bonded in a 10-coordinate geometry to one Ni(19), one Ni(9), two equivalent Ni(1), two equivalent Ni(18), two equivalent Ni(22), and two equivalent Ni(4) atoms. In the fourth Si site, Si(4) is bonded in a 10-coordinate geometry to one Ni(20), one Ni(7), two equivalent Ni(16), two equivalent Ni(2), two equivalent Ni(23), and two equivalent Ni(5) atoms. In the fifth Si site, Si(5) is bonded in a 10-coordinate geometry to one Ni(21), one Ni(8), two equivalent Ni(17), two equivalent Ni(24), two equivalent Ni(3), and two equivalent Ni(6) atoms. In the sixth Si site, Si(6) is bonded in a 10-coordinate geometry to one Ni(10), one Ni(22), two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(19), and two equivalent Ni(4) atoms. In the seventh Si site, Si(7) is bonded in a 10-coordinate geometry to one Ni(11), one Ni(23), two equivalent Ni(14), two equivalent Ni(2), two equivalent Ni(20), and two equivalent Ni(5) atoms. In the eighth Si site, Si(8) is bonded in a 10-coordinate geometry to one Ni(12), one Ni(24), two equivalent Ni(15), two equivalent Ni(21), two equivalent Ni(3), and two equivalent Ni(6) atoms.
Ga(Ni3Si)2 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to one Ni(13), one Ni(18), two equivalent Ni(19), two equivalent Ni(22), two equivalent Ni(4), one Ga(3), two equivalent Si(3), and two equivalent Si(6) atoms. The Ni(1)-Ni(13) bond length is 2.51 Å. The Ni(1)-Ni(18) bond length is 2.68 Å. Both Ni(1)-Ni(19) bond lengths are 2.60 Å. Both Ni(1)-Ni(22) bond lengths are 2.57 Å. Both Ni(1)-Ni(4) bond lengths are 2.52 Å. The Ni(1)-Ga(3) bond length is 2.44 Å. Both Ni(1)-Si(3) bond lengths are 2.34 Å. Both Ni(1)-Si(6) bond lengths are 2.60 Å. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to one Ni(14), one Ni(16), two equivalent Ni(20), two equivalent Ni(23), two equivalent Ni(5), one Ga(1), two equivalent Si(4), and two equivalent Si(7) atoms. The Ni(2)-Ni(14) bond length is 2.50 Å. The Ni(2)-Ni(16) bond length is 2.65 Å. Both Ni(2)-Ni(20) bond lengths are 2.65 Å. Both Ni(2)-Ni(23) bond lengths are 2.58 Å. There is one shorter (2.53 Å) and one longer (2.55 Å) Ni(2)-Ni(5) bond length. The Ni(2)-Ga(1) bond length is 2.46 Å. Both Ni(2)-Si(4) bond lengths are 2.33 Å. Both Ni(2)-Si(7) bond lengths are 2.54 Å. In the third Ni site, Ni(3) is bonded in a 13-coordinate geometry to one Ni(15), one Ni(17), two equivalent Ni(21), two equivalent Ni(24), two equivalent Ni(6), one Ga(2), two equivalent Si(5), and two equivalent Si(8) atoms. The Ni(3)-Ni(15) bond length is 2.50 Å. The Ni(3)-Ni(17) bond length is 2.65 Å. Both Ni(3)-Ni(21) bond lengths are 2.65 Å. Both Ni(3)-Ni(24) bond lengths are 2.58 Å. There is one shorter (2.52 Å) and one longer (2.55 Å) Ni(3)-Ni(6) bond length. The Ni(3)-Ga(2) bond length is 2.44 Å. Both Ni(3)-Si(5) bond lengths are 2.33 Å. Both Ni(3)-Si(8) bond lengths are 2.55 Å. In the fourth Ni site, Ni(4) is bonded in a 13-coordinate geometry to one Ni(13), one Ni(18), two equivalent Ni(1), two equivalent Ni(19), two equivalent Ni(22), one Ga(4), two equivalent Si(3), and two equivalent Si(6) atoms. The Ni(4)-Ni(13) bond length is 2.66 Å. The Ni(4)-Ni(18) bond length is 2.53 Å. Both Ni(4)-Ni(19) bond lengths are 2.57 Å. Both Ni(4)-Ni(22) bond lengths are 2.60 Å. The Ni(4)-Ga(4) bond length is 2.48 Å. Both Ni(4)-Si(3) bond lengths are 2.58 Å. Both Ni(4)-Si(6) bond lengths are 2.34 Å. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to one Ni(14), one Ni(16), two equivalent Ni(2), two equivalent Ni(20), two equivalent Ni(23), one Si(1), two equivalent Si(4), and two equivalent Si(7) atoms. The Ni(5)-Ni(14) bond length is 2.61 Å. The Ni(5)-Ni(16) bond length is 2.56 Å. Both Ni(5)-Ni(20) bond lengths are 2.53 Å. Both Ni(5)-Ni(23) bond lengths are 2.66 Å. The Ni(5)-Si(1) bond length is 2.40 Å. Both Ni(5)-Si(4) bond lengths are 2.62 Å. Both Ni(5)-Si(7) bond lengths are 2.33 Å. In the sixth Ni site, Ni(6) is bonded in a 13-coordinate geometry to one Ni(15), one Ni(17), two equivalent Ni(21), two equivalent Ni(24), two equivalent Ni(3), one Si(2), two equivalent Si(5), and two equivalent Si(8) atoms. The Ni(6)-Ni(15) bond length is 2.62 Å. The Ni(6)-Ni(17) bond length is 2.58 Å. Both Ni(6)-Ni(21) bond lengths are 2.53 Å. Both Ni(6)-Ni(24) bond lengths are 2.64 Å. The Ni(6)-Si(2) bond length is 2.42 Å. Both Ni(6)-Si(5) bond lengths are 2.61 Å. Both Ni(6)-Si(8) bond lengths are 2.34 Å. In the seventh Ni site, Ni(7) is bonded in a 5-coordinate geometry to two equivalent Ni(10), two equivalent Ni(13), two equivalent Ni(16), two equivalent Ga(1), two equivalent Ga(4), and one Si(4) atom. Both Ni(7)-Ni(10) bond lengths are 2.52 Å. Both Ni(7)-Ni(13) bond lengths are 2.75 Å. Both Ni(7)-Ni(16) bond lengths are 2.54 Å. Both Ni(7)-Ga(1) bond lengths are 2.39 Å. Both Ni(7)-Ga(4) bond lengths are 2.52 Å. The Ni(7)-Si(4) bond length is 2.41 Å. In the eighth Ni site, Ni(8) is bonded in a 13-coordinate geometry to one Ni(20), one Ni(24), two equivalent Ni(11), two equivalent Ni(14), two equivalent Ni(17), two equivalent Ga(2), one Si(5), and two equivalent Si(1) atoms. The Ni(8)-Ni(20) bond length is 2.53 Å. The Ni(8)-Ni(24) bond length is 2.87 Å. There is one shorter (2.49 Å) and one longer (2.58 Å) Ni(8)-Ni(11) bond length. Both Ni(8)-Ni(14) bond lengths are 2.69 Å. Both Ni(8)-Ni(17) bond lengths are 2.53 Å. Both Ni(8)-Ga(2) bond lengths are 2.39 Å. The Ni(8)-Si(5) bond length is 2.41 Å. Both Ni(8)-Si(1) bond lengths are 2.49 Å. In the ninth Ni site, Ni(9) is bonded in a 13-coordinate geometry to one Ni(21), one Ni(22), two equivalent Ni(12), two equivalent Ni(15), two equivalent Ni(18), two equivalent Ga(3), one Si(3), and two equivalent Si(2) atoms. The Ni(9)-Ni(21) bond length is 2.53 Å. The Ni(9)-Ni(22) bond length is 2.87 Å. There is one shorter (2.50 Å) and one longer (2.57 Å) Ni(9)-Ni(12) bond length. Both Ni(9)-Ni(15) bond lengths are 2.69 Å. Both Ni(9)-Ni(18) bond lengths are 2.53 Å. Both Ni(9)-Ga(3) bond lengths are 2.39 Å. The Ni(9)-Si(3) bond length is 2.41 Å. Both Ni(9)-Si(2) bond lengths are 2.49 Å. In the tenth Ni site, Ni(10) is bonded in a 13-coordinate geometry to one Ni(19), one Ni(23), two equivalent Ni(13), two equivalent Ni(16), two equivalent Ni(7), two equivalent Ga(1), two equivalent Ga(4), and one Si(6) atom. The Ni(10)-Ni(19) bond length is 2.86 Å. The Ni(10)-Ni(23) bond length is 2.60 Å. Both Ni(10)-Ni(13) bond lengths are 2.55 Å. Both Ni(10)-Ni(16) bond lengths are 2.77 Å. Both Ni(10)-Ga(1) bond lengths are 2.51 Å. Both Ni(10)-Ga(4) bond lengths are 2.38 Å. The Ni(10)-Si(6) bond length is 2.40 Å. In the eleventh Ni site, Ni(11) is bonded in a 13-coordinate geometry to one Ni(20), one Ni(24), two equivalent Ni(14), two equivalent Ni(17), two equivalent Ni(8), two equivalent Ga(2), one Si(7), and two equivalent Si(1) atoms. The Ni(11)-Ni(20) bond length is 2.64 Å. The Ni(11)-Ni(24) bond length is 2.66 Å. Both Ni(11)-Ni(14) bond lengths are 2.56 Å. Both Ni(11)-Ni(17) bond lengths are 2.76 Å. Both Ni(11)-Ga(2) bond lengths are 2.58 Å. The Ni(11)-Si(7) bond length is 2.38 Å. Both Ni(11)-Si(1) bond lengths are 2.33 Å. In the twelfth Ni site, Ni(12) is bonded in a 13-coordinate geometry to one Ni(21), one Ni(22), two equivalent Ni(15), two equivalent Ni(18), two equivalent Ni(9), two equivalent Ga(3), one Si(8), and two equivalent Si(2) atoms. The Ni(12)-Ni(21) bond length is 2.64 Å. The Ni(12)-Ni(22) bond length is 2.68 Å. Both Ni(12)-Ni(15) bond lengths are 2.56 Å. Both Ni(12)-Ni(18) bond lengths are 2.76 Å. Both Ni(12)-Ga(3) bond lengths are 2.58 Å. The Ni(12)-Si(8) bond length is 2.37 Å. Both Ni(12)-Si(2) bond lengths are 2.33 Å. In the thirteenth Ni site, Ni(13) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(10), two equivalent Ni(19), two equivalent Ni(7), one Ga(1), two equivalent Ga(4), and two equivalent Si(6) atoms. Both Ni(13)-Ni(19) bond lengths are 2.64 Å. The Ni(13)-Ga(1) bond length is 2.40 Å. There is one shorter (2.38 Å) and one longer (2.64 Å) Ni(13)-Ga(4) bond length. Both Ni(13)-Si(6) bond lengths are 2.27 Å. In the fourteenth Ni site, Ni(14) is bonded in a 13-coordinate geometry to one Ni(2), one Ni(5), two equivalent Ni(11), two equivalent Ni(20), two equivalent Ni(8), one Ga(2), two equivalent Si(1), and two equivalent Si(7) atoms. Both Ni(14)-Ni(20) bond lengths are 2.64 Å. The Ni(14)-Ga(2) bond length is 2.37 Å. There is one shorter (2.30 Å) and one longer (2.72 Å) Ni(14)-Si(1) bond length. Both Ni(14)-Si(7) bond lengths are 2.29 Å. In the fifteenth Ni site, Ni(15) is bonded in a 13-coordinate geometry to one Ni(3), one Ni(6), two equivalent Ni(12), two equivalent Ni(21), two equivalent Ni(9), one Ga(3), two equivalent Si(2), and two equivalent Si(8) atoms. Both Ni(15)-Ni(21) bond lengths are 2.64 Å. The Ni(15)-Ga(3) bond length is 2.38 Å. There is one shorter (2.30 Å) and one longer (2.72 Å) Ni(15)-Si(2) bond length. Both Ni(15)-Si(8) bond lengths are 2.28 Å. In the sixteenth Ni site, Ni(16) is bonded in a 13-coordinate geometry to one Ni(2), one Ni(5), two equivalent Ni(10), two equivalent Ni(23), two equivalent Ni(7), one Ga(4), two equivalent Ga(1), and two equivalent Si(4) atoms. Both Ni(16)-Ni(23) bond lengths are 2.62 Å. The Ni(16)-Ga(4) bond length is 2.42 Å. There is one shorter (2.39 Å) and one longer (2.63 Å) Ni(16)-Ga(1) bond length. Both Ni(16)-Si(4) bond lengths are 2.28 Å. In the seventeenth Ni site, Ni(17) is bonded in a 13-coordinate geometry to one Ni(3), one Ni(6), two equivalent Ni(11), two equivalent Ni(24), two equivalent Ni(8), two equivalent Ga(2), one Si(1), and two equivalent Si(5) atoms. Both Ni(17)-Ni(24) bond lengths are 2.64 Å. There is one shorter (2.37 Å) and one longer (2.63 Å) Ni(17)-Ga(2) bond length. The Ni(17)-Si(1) bond length is 2.32 Å. Both Ni(17)-Si(5) bond lengths are 2.29 Å. In the eighteenth Ni site, Ni(18) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(12), two equivalent Ni(22), two equivalent Ni(9), two equivalent Ga(3), one Si(2), and two equivalent Si(3) atoms. Both Ni(18)-Ni(22) bond lengths are 2.65 Å. There is one shorter (2.37 Å) and one longer (2.62 Å) Ni(18)-Ga(3) bond length. The Ni(18)-Si(2) bond length is 2.31 Å. Both Ni(18)-Si(3) bond lengths are 2.30 Å. In the nineteenth Ni site, Ni(19) is bonded in a 4-coordinate geometry to one Ni(10), two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(4), two equivalent Ga(4), one Si(3), and two equivalent Si(6) atoms. Both Ni(19)-Ga(4) bond lengths are 2.39 Å. The Ni(19)-Si(3) bond length is 2.29 Å. There is one shorter (2.31 Å) and one longer (2.66 Å) Ni(19)-Si(6) bond length. In the twentieth Ni site, Ni(20) is bonded in a 13-coordinate geometry to one Ni(11), one Ni(8), two equivalent Ni(14), two equivalent Ni(2), two equivalent Ni(5), one Si(4), two equivalent Si(1), and two equivalent Si(7) atoms. The Ni(20)-Si(4) bond length is 2.33 Å. Both Ni(20)-Si(1) bond lengths are 2.33 Å. There is one shorter (2.30 Å) and one longer (2.68 Å) Ni(20)-Si(7) bond length. In the twenty-first Ni site, Ni(21) is bonded in a 13-coordinate geometry to one Ni(12), one Ni(9), two equivalent Ni(15), two equivalent Ni(3), two equivalent Ni(6), one Si(5), two equivalent Si(2), and two equivalent Si(8) atoms. The Ni(21)-Si(5) bond length is 2.32 Å. Both Ni(21)-Si(2) bond lengths are 2.33 Å. There is one shorter (2.31 Å) and one longer (2.68 Å) Ni(21)-Si(8) bond length. In the twenty-second Ni site, Ni(22) is bonded in a 4-coordinate geometry to one Ni(12), one Ni(9), two equivalent Ni(1), two equivalent Ni(18), two equivalent Ni(4), two equivalent Ga(3), one Si(6), and two equivalent Si(3) atoms. Both Ni(22)-Ga(3) bond lengths are 2.37 Å. The Ni(22)-Si(6) bond length is 2.30 Å. There is one shorter (2.30 Å) and one longer (2.67 Å) Ni(22)-Si(3) bond length. In the twenty-third Ni site, Ni(23) is bonded in a 4-coordinate geometry to one Ni(10), two equivalent Ni(16), two equivalent Ni(2), two equivalent Ni(5), two equivalent Ga(1), one Si(7), and two equivalent Si(4) atoms. Both Ni(23)-Ga(1) bond lengths are 2.39 Å. The Ni(23)-Si(7) bond length is 2.26 Å. There is one shorter (2.30 Å) and one longer (2.67 Å) Ni(23)-Si(4) bond length. In the twenty-fourth Ni site, Ni(24) is bonded in a 4-coordinate geometry to one Ni(11), one Ni(8), two equivalent Ni(17), two equivalent Ni(3), two equivalent Ni(6), two equivalent Ga(2), one Si(8), and two equivalent Si(5) atoms. Both Ni(24)-Ga(2) bond lengths are 2.37 Å. The Ni(24)-Si(8) bond length is 2.27 Å. There is one shorter (2.29 Å) and one longer (2.68 Å) Ni(24)-Si(5) bond length. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Ni(13), one Ni(2), two equivalent Ni(10), two equivalent Ni(16), two equivalent Ni(23), and two equivalent Ni(7) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Ni(14), one Ni(3), two equivalent Ni(11), two equivalent Ni(17), two equivalent Ni(24), and two equivalent Ni(8) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Ni(1), one Ni(15), two equivalent Ni(12), two equivalent Ni(18), two equivalent Ni(22), and two equivalent Ni(9) atoms. In the fourth Ga site, Ga(4) is bonded in a 10-coordinate geometry to one Ni(16), one Ni(4), two equivalent Ni(10), two equivalent Ni(13), two equivalent Ni(19), and two equivalent Ni(7) atoms. There are eight inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Ni(17), one Ni(5), two equivalent Ni(11), two equivalent Ni(14), two equivalent Ni(20), and two equivalent Ni(8) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Ni(18), one Ni(6), two equivalent Ni(12), two equivalent Ni(15), two equivalent Ni(21), and two equivalent Ni(9) atoms. In the third Si site, Si(3) is bonded in a 10-coordinate geometry to one Ni(19), one Ni(9), two equivalent Ni(1), two equivalent Ni(18), two equivalent Ni(22), and two equivalent Ni(4) atoms. In the fourth Si site, Si(4) is bonded in a 10-coordinate geometry to one Ni(20), one Ni(7), two equivalent Ni(16), two equivalent Ni(2), two equivalent Ni(23), and two equivalent Ni(5) atoms. In the fifth Si site, Si(5) is bonded in a 10-coordinate geometry to one Ni(21), one Ni(8), two equivalent Ni(17), two equivalent Ni(24), two equivalent Ni(3), and two equivalent Ni(6) atoms. In the sixth Si site, Si(6) is bonded in a 10-coordinate geometry to one Ni(10), one Ni(22), two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(19), and two equivalent Ni(4) atoms. In the seventh Si site, Si(7) is bonded in a 10-coordinate geometry to one Ni(11), one Ni(23), two equivalent Ni(14), two equivalent Ni(2), two equivalent Ni(20), and two equivalent Ni(5) atoms. In the eighth Si site, Si(8) is bonded in a 10-coordinate geometry to one Ni(12), one Ni(24), two equivalent Ni(15), two equivalent Ni(21), two equivalent Ni(3), and two equivalent Ni(6) atoms.