Ti11Pt4Ni9 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/c space group. There are seven inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Ni(2), and two equivalent Ni(5) atoms. In the second Ti site, Ti(2) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the third Ti site, Ti(3) is bonded in a 8-coordinate geometry to two equivalent Pt(2), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the fourth Ti site, Ti(4) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), one Ni(3), one Ni(4), and two equivalent Ni(5) atoms. In the fifth Ti site, Ti(5) is bonded in a 9-coordinate geometry to one Pt(1), two equivalent Pt(2), one Ni(1), one Ni(2), one Ni(3), one Ni(5), and two equivalent Ni(4) atoms. In the sixth Ti site, Ti(6) is bonded in a 9-coordinate geometry to one Pt(2), two equivalent Pt(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), and two equivalent Ni(2) atoms. In the seventh Ti site, Ti(7) is bonded in a 7-coordinate geometry to one Pt(1), one Ni(1), one Ni(2), one Ni(4), two equivalent Ni(3), and two equivalent Ni(5) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 14-coordinate geometry to one Ti(1), one Ti(2), one Ti(5), one Ti(7), two equivalent Ti(4), two equivalent Ti(6), one Pt(1), one Pt(2), one Ni(2), one Ni(3), one Ni(4), and one Ni(5) atom. In the second Pt site, Pt(2) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(3), one Ti(6), two equivalent Ti(4), two equivalent Ti(5), one Pt(1), one Ni(2), one Ni(3), one Ni(4), and one Ni(5) atom. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to two equivalent Ti(5), two equivalent Ti(6), two equivalent Ti(7), and two equivalent Ni(2) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ti(1), one Ti(2), one Ti(3), one Ti(5), one Ti(7), two equivalent Ti(6), one Pt(1), one Pt(2), one Ni(1), and one Ni(3) atom. In the third Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Ti(2), one Ti(3), one Ti(4), one Ti(5), one Ti(6), two equivalent Ti(7), one Pt(1), one Pt(2), and one Ni(2) atom. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ti(2), one Ti(3), one Ti(4), one Ti(6), one Ti(7), two equivalent Ti(5), one Pt(1), one Pt(2), and one Ni(4) atom. In the fifth Ni site, Ni(5) is bonded in a 10-coordinate geometry to one Ti(1), one Ti(5), one Ti(6), two equivalent Ti(4), two equivalent Ti(7), one Pt(1), one Pt(2), and one Ni(5) atom.
Ti11Pt4Ni9 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/c space group. There are seven inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Ni(2), and two equivalent Ni(5) atoms. Both Ti(1)-Pt(1) bond lengths are 2.66 Å. Both Ti(1)-Pt(2) bond lengths are 2.65 Å. Both Ti(1)-Ni(2) bond lengths are 2.52 Å. Both Ti(1)-Ni(5) bond lengths are 2.52 Å. In the second Ti site, Ti(2) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. Both Ti(2)-Pt(1) bond lengths are 2.63 Å. Both Ti(2)-Ni(2) bond lengths are 2.53 Å. Both Ti(2)-Ni(3) bond lengths are 2.54 Å. Both Ti(2)-Ni(4) bond lengths are 2.52 Å. In the third Ti site, Ti(3) is bonded in a 8-coordinate geometry to two equivalent Pt(2), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. Both Ti(3)-Pt(2) bond lengths are 2.64 Å. Both Ti(3)-Ni(2) bond lengths are 2.50 Å. Both Ti(3)-Ni(3) bond lengths are 2.52 Å. Both Ti(3)-Ni(4) bond lengths are 2.57 Å. In the fourth Ti site, Ti(4) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), one Ni(3), one Ni(4), and two equivalent Ni(5) atoms. Both Ti(4)-Pt(1) bond lengths are 2.68 Å. There is one shorter (2.65 Å) and one longer (2.66 Å) Ti(4)-Pt(2) bond length. The Ti(4)-Ni(3) bond length is 2.51 Å. The Ti(4)-Ni(4) bond length is 2.52 Å. There is one shorter (2.48 Å) and one longer (2.50 Å) Ti(4)-Ni(5) bond length. In the fifth Ti site, Ti(5) is bonded in a 9-coordinate geometry to one Pt(1), two equivalent Pt(2), one Ni(1), one Ni(2), one Ni(3), one Ni(5), and two equivalent Ni(4) atoms. The Ti(5)-Pt(1) bond length is 3.07 Å. There is one shorter (3.01 Å) and one longer (3.04 Å) Ti(5)-Pt(2) bond length. The Ti(5)-Ni(1) bond length is 2.48 Å. The Ti(5)-Ni(2) bond length is 2.68 Å. The Ti(5)-Ni(3) bond length is 2.61 Å. The Ti(5)-Ni(5) bond length is 2.69 Å. There is one shorter (2.57 Å) and one longer (2.64 Å) Ti(5)-Ni(4) bond length. In the sixth Ti site, Ti(6) is bonded in a 9-coordinate geometry to one Pt(2), two equivalent Pt(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), and two equivalent Ni(2) atoms. The Ti(6)-Pt(2) bond length is 2.91 Å. There is one shorter (2.84 Å) and one longer (2.86 Å) Ti(6)-Pt(1) bond length. The Ti(6)-Ni(1) bond length is 2.37 Å. The Ti(6)-Ni(3) bond length is 2.46 Å. The Ti(6)-Ni(4) bond length is 2.68 Å. The Ti(6)-Ni(5) bond length is 2.67 Å. Both Ti(6)-Ni(2) bond lengths are 2.73 Å. In the seventh Ti site, Ti(7) is bonded in a 7-coordinate geometry to one Pt(1), one Ni(1), one Ni(2), one Ni(4), two equivalent Ni(3), and two equivalent Ni(5) atoms. The Ti(7)-Pt(1) bond length is 3.19 Å. The Ti(7)-Ni(1) bond length is 2.64 Å. The Ti(7)-Ni(2) bond length is 2.68 Å. The Ti(7)-Ni(4) bond length is 2.64 Å. There is one shorter (2.57 Å) and one longer (2.61 Å) Ti(7)-Ni(3) bond length. There is one shorter (2.62 Å) and one longer (2.69 Å) Ti(7)-Ni(5) bond length. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 14-coordinate geometry to one Ti(1), one Ti(2), one Ti(5), one Ti(7), two equivalent Ti(4), two equivalent Ti(6), one Pt(1), one Pt(2), one Ni(2), one Ni(3), one Ni(4), and one Ni(5) atom. The Pt(1)-Pt(1) bond length is 3.02 Å. The Pt(1)-Pt(2) bond length is 3.03 Å. The Pt(1)-Ni(2) bond length is 2.82 Å. The Pt(1)-Ni(3) bond length is 2.81 Å. The Pt(1)-Ni(4) bond length is 2.77 Å. The Pt(1)-Ni(5) bond length is 2.78 Å. In the second Pt site, Pt(2) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(3), one Ti(6), two equivalent Ti(4), two equivalent Ti(5), one Pt(1), one Ni(2), one Ni(3), one Ni(4), and one Ni(5) atom. The Pt(2)-Ni(2) bond length is 2.82 Å. The Pt(2)-Ni(3) bond length is 2.77 Å. The Pt(2)-Ni(4) bond length is 2.84 Å. The Pt(2)-Ni(5) bond length is 2.78 Å. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to two equivalent Ti(5), two equivalent Ti(6), two equivalent Ti(7), and two equivalent Ni(2) atoms. Both Ni(1)-Ni(2) bond lengths are 2.77 Å. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ti(1), one Ti(2), one Ti(3), one Ti(5), one Ti(7), two equivalent Ti(6), one Pt(1), one Pt(2), one Ni(1), and one Ni(3) atom. The Ni(2)-Ni(3) bond length is 2.61 Å. In the third Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Ti(2), one Ti(3), one Ti(4), one Ti(5), one Ti(6), two equivalent Ti(7), one Pt(1), one Pt(2), and one Ni(2) atom. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ti(2), one Ti(3), one Ti(4), one Ti(6), one Ti(7), two equivalent Ti(5), one Pt(1), one Pt(2), and one Ni(4) atom. The Ni(4)-Ni(4) bond length is 2.58 Å. In the fifth Ni site, Ni(5) is bonded in a 10-coordinate geometry to one Ti(1), one Ti(5), one Ti(6), two equivalent Ti(4), two equivalent Ti(7), one Pt(1), one Pt(2), and one Ni(5) atom. The Ni(5)-Ni(5) bond length is 2.60 Å.