MnNiAs crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded in a 11-coordinate geometry to six equivalent Ni(1) and five equivalent As(1) atoms. Ni(1) is bonded in a 4-coordinate geometry to six equivalent Mn(1) and four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to five equivalent Mn(1) and four equivalent Ni(1) atoms.
MnNiAs crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded in a 11-coordinate geometry to six equivalent Ni(1) and five equivalent As(1) atoms. There are a spread of Mn(1)-Ni(1) bond distances ranging from 2.75-2.92 Å. There are a spread of Mn(1)-As(1) bond distances ranging from 2.56-2.70 Å. Ni(1) is bonded in a 4-coordinate geometry to six equivalent Mn(1) and four equivalent As(1) atoms. There are a spread of Ni(1)-As(1) bond distances ranging from 2.34-2.41 Å. As(1) is bonded in a 9-coordinate geometry to five equivalent Mn(1) and four equivalent Ni(1) atoms.