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TcB is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tc3- is bonded in a body-centered cubic geometry to eight equivalent B3+ atoms. All Tc–B bond lengths are 2.37 Å. B3+ is bonded in a body-centered cubic geometry to eight equivalent Tc3- atoms.
TcB is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Tc3- is bonded to four equivalent B3+ atoms to form corner-sharing TcB4 tetrahedra. All Tc–B bond lengths are 2.05 Å. B3+ is bonded to four equivalent Tc3- atoms to form corner-sharing BTc4 tetrahedra.
TcB is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Tc3- is bonded to six equivalent B3+ atoms to form a mixture of corner and edge-sharing TcB6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Tc–B bond lengths are 2.20 Å. B3+ is bonded to six equivalent Tc3- atoms to form a mixture of corner and edge-sharing BTc6 octahedra. The corner-sharing octahedral tilt angles are 0°.
TcB is Tungsten Carbide structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Tc3- is bonded to six equivalent B3+ atoms to form a mixture of distorted corner, edge, and face-sharing TcB6 pentagonal pyramids. All Tc–B bond lengths are 2.22 Å. B3+ is bonded to six equivalent Tc3- atoms to form a mixture of distorted corner, edge, and face-sharing BTc6 pentagonal pyramids.
Tc7B3 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are three inequivalent Tc+1.29- sites. In the first Tc+1.29- site, Tc+1.29- is bonded in a distorted L-shaped geometry to two equivalent B3+ atoms. Both Tc–B bond lengths are 2.25 Å. In the second Tc+1.29- site, Tc+1.29- is bonded in a 3-coordinate geometry to three equivalent B3+ atoms. All Tc–B bond lengths are 2.22 Å. In the third Tc+1.29- site, Tc+1.29- is bonded in a 3-coordinate geometry to three equivalent B3+ atoms. There are one shorter (2.19 Å) and two longer (2.21 Å) Tc–B bond lengths. B3+ is bonded in a 6-coordinate geometry to six Tc+1.29- atoms.
TcB is Tungsten Carbide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Tc3- is bonded to six equivalent B3+ atoms to form a mixture of distorted edge, face, and corner-sharing TcB6 octahedra. The corner-sharing octahedral tilt angles are 44°. All Tc–B bond lengths are 2.23 Å. B3+ is bonded to six equivalent Tc3- atoms to form a mixture of distorted edge and corner-sharing BTc6 pentagonal pyramids.
TcB2 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Tc6+ is bonded in a 8-coordinate geometry to eight equivalent B3- atoms. There are two shorter (2.23 Å) and six longer (2.26 Å) Tc–B bond lengths. B3- is bonded in a 7-coordinate geometry to four equivalent Tc6+ and three equivalent B3- atoms. All B–B bond lengths are 1.82 Å.