BeCr2O4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. Be(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form BeO4 tetrahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra, and edges with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-60°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with four equivalent Cr(2)O6 octahedra, corners with four equivalent Be(1)O4 tetrahedra, edges with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Be(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the second Cr site, Cr(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with two equivalent Be(1)O4 tetrahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and edges with two equivalent Be(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-58°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Be(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted corner-sharing OBeCr3 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Be(1), one Cr(1), and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Be(1), one Cr(2), and two equivalent Cr(1) atoms.
BeCr2O4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. Be(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form BeO4 tetrahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra, and edges with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-60°. The Be(1)-O(1) bond length is 1.58 Å. The Be(1)-O(2) bond length is 1.67 Å. Both Be(1)-O(3) bond lengths are 1.66 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with four equivalent Cr(2)O6 octahedra, corners with four equivalent Be(1)O4 tetrahedra, edges with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Be(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-58°. The Cr(1)-O(1) bond length is 2.01 Å. The Cr(1)-O(2) bond length is 1.97 Å. There are two shorter (2.01 Å) and two longer (2.05 Å) Cr(1)-O(3) bond lengths. In the second Cr site, Cr(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with two equivalent Be(1)O4 tetrahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and edges with two equivalent Be(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-58°. Both Cr(2)-O(1) bond lengths are 1.97 Å. Both Cr(2)-O(2) bond lengths are 1.97 Å. Both Cr(2)-O(3) bond lengths are 2.00 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Be(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted corner-sharing OBeCr3 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Be(1), one Cr(1), and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Be(1), one Cr(2), and two equivalent Cr(1) atoms.