CrCr2Nb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Nb(1) is bonded to four equivalent Cr(1) and eight equivalent Cr(2) atoms to form distorted NbCr12 cuboctahedra that share corners with four equivalent Nb(1)Cr12 cuboctahedra, edges with eight equivalent Nb(1)Cr12 cuboctahedra, edges with sixteen equivalent Cr(2)Nb4Cr8 cuboctahedra, faces with four equivalent Nb(1)Cr12 cuboctahedra, and faces with eight equivalent Cr(2)Nb4Cr8 cuboctahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted square co-planar geometry to four equivalent Nb(1) and eight equivalent Cr(2) atoms. In the second Cr site, Cr(2) is bonded to four equivalent Nb(1), four equivalent Cr(1), and four equivalent Cr(2) atoms to form distorted CrNb4Cr8 cuboctahedra that share corners with twelve equivalent Cr(2)Nb4Cr8 cuboctahedra, edges with eight equivalent Nb(1)Cr12 cuboctahedra, edges with eight equivalent Cr(2)Nb4Cr8 cuboctahedra, faces with four equivalent Nb(1)Cr12 cuboctahedra, and faces with ten equivalent Cr(2)Nb4Cr8 cuboctahedra.
CrCr2Nb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Nb(1) is bonded to four equivalent Cr(1) and eight equivalent Cr(2) atoms to form distorted NbCr12 cuboctahedra that share corners with four equivalent Nb(1)Cr12 cuboctahedra, edges with eight equivalent Nb(1)Cr12 cuboctahedra, edges with sixteen equivalent Cr(2)Nb4Cr8 cuboctahedra, faces with four equivalent Nb(1)Cr12 cuboctahedra, and faces with eight equivalent Cr(2)Nb4Cr8 cuboctahedra. All Nb(1)-Cr(1) bond lengths are 2.48 Å. All Nb(1)-Cr(2) bond lengths are 2.83 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted square co-planar geometry to four equivalent Nb(1) and eight equivalent Cr(2) atoms. All Cr(1)-Cr(2) bond lengths are 2.83 Å. In the second Cr site, Cr(2) is bonded to four equivalent Nb(1), four equivalent Cr(1), and four equivalent Cr(2) atoms to form distorted CrNb4Cr8 cuboctahedra that share corners with twelve equivalent Cr(2)Nb4Cr8 cuboctahedra, edges with eight equivalent Nb(1)Cr12 cuboctahedra, edges with eight equivalent Cr(2)Nb4Cr8 cuboctahedra, faces with four equivalent Nb(1)Cr12 cuboctahedra, and faces with ten equivalent Cr(2)Nb4Cr8 cuboctahedra. All Cr(2)-Cr(2) bond lengths are 2.48 Å.