FeSi(CrSi) crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent Si(1) and four equivalent Si(2) atoms. Fe(1) is bonded in a 7-coordinate geometry to three equivalent Si(2) and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to three equivalent Cr(1) and four equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to four equivalent Cr(1) and three equivalent Fe(1) atoms.
FeSi(CrSi) crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent Si(1) and four equivalent Si(2) atoms. There are a spread of Cr(1)-Si(1) bond distances ranging from 2.34-2.53 Å. There are a spread of Cr(1)-Si(2) bond distances ranging from 2.37-2.54 Å. Fe(1) is bonded in a 7-coordinate geometry to three equivalent Si(2) and four equivalent Si(1) atoms. There are a spread of Fe(1)-Si(2) bond distances ranging from 2.25-2.52 Å. There are a spread of Fe(1)-Si(1) bond distances ranging from 2.35-2.53 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to three equivalent Cr(1) and four equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to four equivalent Cr(1) and three equivalent Fe(1) atoms.