W2B5 is Tungsten boride-like structured and crystallizes in the trigonal R-3m space group. W(1) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(3) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded to six equivalent B(2) atoms to form distorted edge-sharing BB6 cuboctahedra. In the second B site, B(2) is bonded in a 10-coordinate geometry to four equivalent W(1), three equivalent B(1), and three equivalent B(2) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to six equivalent W(1) and three equivalent B(3) atoms.
W2B5 is Tungsten boride-like structured and crystallizes in the trigonal R-3m space group. W(1) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(3) atoms. There is one shorter (2.33 Å) and three longer (2.36 Å) W(1)-B(2) bond lengths. There are three shorter (2.40 Å) and three longer (2.46 Å) W(1)-B(3) bond lengths. There are three inequivalent B sites. In the first B site, B(1) is bonded to six equivalent B(2) atoms to form distorted edge-sharing BB6 cuboctahedra. All B(1)-B(2) bond lengths are 1.83 Å. In the second B site, B(2) is bonded in a 10-coordinate geometry to four equivalent W(1), three equivalent B(1), and three equivalent B(2) atoms. All B(2)-B(2) bond lengths are 1.96 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to six equivalent W(1) and three equivalent B(3) atoms. All B(3)-B(3) bond lengths are 1.79 Å.