LaPtSb crystallizes in the monoclinic C2/m space group. La(1) is bonded in a 10-coordinate geometry to six equivalent Pt(1) and four equivalent Sb(1) atoms. Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Pt(1) atoms. Sb(1) is bonded to four equivalent La(1) and three equivalent Sb(1) atoms to form distorted edge-sharing SbLa4Sb3 pentagonal bipyramids.
LaPtSb crystallizes in the monoclinic C2/m space group. La(1) is bonded in a 10-coordinate geometry to six equivalent Pt(1) and four equivalent Sb(1) atoms. There are a spread of La(1)-Pt(1) bond distances ranging from 2.93-3.48 Å. There are a spread of La(1)-Sb(1) bond distances ranging from 3.42-3.52 Å. Pt(1) is bonded in a 9-coordinate geometry to six equivalent La(1) and three equivalent Pt(1) atoms. There are two shorter (2.74 Å) and one longer (2.89 Å) Pt(1)-Pt(1) bond length. Sb(1) is bonded to four equivalent La(1) and three equivalent Sb(1) atoms to form distorted edge-sharing SbLa4Sb3 pentagonal bipyramids. There are two shorter (2.84 Å) and one longer (3.07 Å) Sb(1)-Sb(1) bond length.