(MnCr)B2 is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Amm2 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent B(1) and four equivalent B(2) atoms. Mn(1) is bonded in a 7-coordinate geometry to three equivalent B(2) and four equivalent B(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to three equivalent Cr(1), four equivalent Mn(1), and two equivalent B(2) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to four equivalent Cr(1), three equivalent Mn(1), and two equivalent B(1) atoms.
(MnCr)B2 is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Amm2 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent B(1) and four equivalent B(2) atoms. There are two shorter (2.20 Å) and one longer (2.25 Å) Cr(1)-B(1) bond length. All Cr(1)-B(2) bond lengths are 2.17 Å. Mn(1) is bonded in a 7-coordinate geometry to three equivalent B(2) and four equivalent B(1) atoms. There are two shorter (2.22 Å) and one longer (2.23 Å) Mn(1)-B(2) bond length. All Mn(1)-B(1) bond lengths are 2.17 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to three equivalent Cr(1), four equivalent Mn(1), and two equivalent B(2) atoms. Both B(1)-B(2) bond lengths are 1.80 Å. In the second B site, B(2) is bonded in a 9-coordinate geometry to four equivalent Cr(1), three equivalent Mn(1), and two equivalent B(1) atoms.