YWN3 crystallizes in the orthorhombic Cmcm space group. Y(1) is bonded to one N(2) and six equivalent N(1) atoms to form distorted YN7 pentagonal bipyramids that share corners with six equivalent W(1)N4 tetrahedra, edges with six equivalent Y(1)N7 pentagonal bipyramids, and  an edgeedge with one W(1)N4 tetrahedra. W(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form WN4 tetrahedra that share corners with six equivalent Y(1)N7 pentagonal bipyramids, corners with two equivalent W(1)N4 tetrahedra, and  an edgeedge with one Y(1)N7 pentagonal bipyramid. There are two inequivalent N sites. In the first N site, N(1) is bonded to three equivalent Y(1) and one W(1) atom to form a mixture of distorted corner and edge-sharing NY3W tetrahedra. In the second N site, N(2) is bonded in a trigonal planar geometry to one Y(1) and two equivalent W(1) atoms.
YWN3 crystallizes in the orthorhombic Cmcm space group. Y(1) is bonded to one N(2) and six equivalent N(1) atoms to form distorted YN7 pentagonal bipyramids that share corners with six equivalent W(1)N4 tetrahedra, edges with six equivalent Y(1)N7 pentagonal bipyramids, and  an edgeedge with one W(1)N4 tetrahedra. The Y(1)-N(2) bond length is 2.50 Å. There are four shorter (2.40 Å) and two longer (2.49 Å) Y(1)-N(1) bond lengths. W(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form WN4 tetrahedra that share corners with six equivalent Y(1)N7 pentagonal bipyramids, corners with two equivalent W(1)N4 tetrahedra, and  an edgeedge with one Y(1)N7 pentagonal bipyramid. Both W(1)-N(1) bond lengths are 1.84 Å. Both W(1)-N(2) bond lengths are 1.95 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to three equivalent Y(1) and one W(1) atom to form a mixture of distorted corner and edge-sharing NY3W tetrahedra. In the second N site, N(2) is bonded in a trigonal planar geometry to one Y(1) and two equivalent W(1) atoms.