Cr3Os crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 2-coordinate geometry to two equivalent Cr(2) and two equivalent Os(1) atoms. In the second Cr site, Cr(2) is bonded in a distorted body-centered cubic geometry to four equivalent Cr(1) and four equivalent Cr(2) atoms. Os(1) is bonded in a 4-coordinate geometry to four equivalent Cr(1) atoms.
Cr3Os crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 2-coordinate geometry to two equivalent Cr(2) and two equivalent Os(1) atoms. Both Cr(1)-Cr(2) bond lengths are 2.39 Å. Both Cr(1)-Os(1) bond lengths are 2.57 Å. In the second Cr site, Cr(2) is bonded in a distorted body-centered cubic geometry to four equivalent Cr(1) and four equivalent Cr(2) atoms. All Cr(2)-Cr(2) bond lengths are 2.56 Å. Os(1) is bonded in a 4-coordinate geometry to four equivalent Cr(1) atoms.