Pt5Ti3 crystallizes in the orthorhombic Ibam space group. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 10-coordinate geometry to two equivalent Pt(3), four equivalent Pt(1), and four equivalent Pt(2) atoms. In the second Ti site, Ti(2) is bonded in a 8-coordinate geometry to two equivalent Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to two equivalent Ti(2) and four equivalent Ti(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to one Ti(2) and four equivalent Ti(1) atoms. In the third Pt site, Pt(3) is bonded to two equivalent Ti(2) and four equivalent Ti(1) atoms to form a mixture of distorted edge and corner-sharing PtTi6 cuboctahedra.
Pt5Ti3 crystallizes in the orthorhombic Ibam space group. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 10-coordinate geometry to two equivalent Pt(3), four equivalent Pt(1), and four equivalent Pt(2) atoms. Both Ti(1)-Pt(3) bond lengths are 2.84 Å. There are a spread of Ti(1)-Pt(1) bond distances ranging from 2.75-2.78 Å. There are two shorter (2.65 Å) and two longer (2.81 Å) Ti(1)-Pt(2) bond lengths. In the second Ti site, Ti(2) is bonded in a 8-coordinate geometry to two equivalent Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms. Both Ti(2)-Pt(2) bond lengths are 2.67 Å. Both Ti(2)-Pt(3) bond lengths are 2.73 Å. All Ti(2)-Pt(1) bond lengths are 2.62 Å. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to two equivalent Ti(2) and four equivalent Ti(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to one Ti(2) and four equivalent Ti(1) atoms. In the third Pt site, Pt(3) is bonded to two equivalent Ti(2) and four equivalent Ti(1) atoms to form a mixture of distorted edge and corner-sharing PtTi6 cuboctahedra.