YbPt2B crystallizes in the hexagonal P6_222 space group. Yb(1) is bonded to eight equivalent Pt(1) and four equivalent B(1) atoms to form a mixture of distorted corner, face, and edge-sharing YbB4Pt8 cuboctahedra. Pt(1) is bonded in a 2-coordinate geometry to four equivalent Yb(1) and two equivalent B(1) atoms. B(1) is bonded in a 4-coordinate geometry to four equivalent Yb(1) and four equivalent Pt(1) atoms.
YbPt2B crystallizes in the hexagonal P6_222 space group. Yb(1) is bonded to eight equivalent Pt(1) and four equivalent B(1) atoms to form a mixture of distorted corner, face, and edge-sharing YbB4Pt8 cuboctahedra. There are four shorter (2.99 Å) and four longer (3.06 Å) Yb(1)-Pt(1) bond lengths. All Yb(1)-B(1) bond lengths are 3.00 Å. Pt(1) is bonded in a 2-coordinate geometry to four equivalent Yb(1) and two equivalent B(1) atoms. Both Pt(1)-B(1) bond lengths are 2.09 Å. B(1) is bonded in a 4-coordinate geometry to four equivalent Yb(1) and four equivalent Pt(1) atoms.