Sm(IrB)2 is alpha Pu-derived structured and crystallizes in the orthorhombic Fddd space group. Sm(1) is bonded in a 14-coordinate geometry to eight equivalent Ir(1) and six equivalent B(1) atoms. Ir(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent B(1) atoms. B(1) is bonded in a 4-coordinate geometry to three equivalent Sm(1) and four equivalent Ir(1) atoms.
Sm(IrB)2 is alpha Pu-derived structured and crystallizes in the orthorhombic Fddd space group. Sm(1) is bonded in a 14-coordinate geometry to eight equivalent Ir(1) and six equivalent B(1) atoms. There are four shorter (3.06 Å) and four longer (3.27 Å) Sm(1)-Ir(1) bond lengths. There are two shorter (3.00 Å) and four longer (3.14 Å) Sm(1)-B(1) bond lengths. Ir(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent B(1) atoms. There are two shorter (2.08 Å) and two longer (2.17 Å) Ir(1)-B(1) bond lengths. B(1) is bonded in a 4-coordinate geometry to three equivalent Sm(1) and four equivalent Ir(1) atoms.