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WTc2Ge crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two WTc2Ge ribbons oriented in the (1, 0, 0) direction. W2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both W–Tc bond lengths are 2.23 Å. Tc3- is bonded in a linear geometry to one W2+ and one Ge4+ atom. The Tc–Ge bond length is 2.37 Å. Ge4+ is bonded in a linear geometry to two equivalent Tc3- atoms.
HfTc2Ge crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two HfTc2Ge ribbons oriented in the (1, 0, 0) direction. Hf4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Hf–Tc bond lengths are 2.32 Å. Tc3- is bonded in a linear geometry to one Hf4+ and one Ge2+ atom. The Tc–Ge bond length is 2.38 Å. Ge2+ is bonded in a linear geometry to two equivalent Tc3- atoms.
TaTc2Ge crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two TaTc2Ge ribbons oriented in the (1, 0, 0) direction. Ta4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Ta–Tc bond lengths are 2.23 Å. Tc3- is bonded in a linear geometry to one Ta4+ and one Ge2+ atom. The Tc–Ge bond length is 2.40 Å. Ge2+ is bonded in a linear geometry to two equivalent Tc3- atoms.
NbTc2Mn crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two NbTc2Mn ribbons oriented in the (1, 0, 0) direction. Nb4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Nb–Tc bond lengths are 2.21 Å. Tc3- is bonded in a linear geometry to one Nb4+ and one Mn2+ atom. The Tc–Mn bond length is 2.62 Å. Mn2+ is bonded in a linear geometry to two equivalent Tc3- atoms.
Na3Tc crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 4-coordinate geometry to four equivalent Tc3- atoms. All Na–Tc bond lengths are 3.35 Å. In the second Na1+ site, Na1+ is bonded in a square co-planar geometry to four equivalent Tc3- atoms. All Na–Tc bond lengths are 3.34 Å. Tc3- is bonded to twelve Na1+ atoms to form a mixture of face, edge, and corner-sharing TcNa12 cuboctahedra.
PuTcB2 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Pu3+ is bonded in a 3-coordinate geometry to one Tc3- and six equivalent B atoms. The Pu–Tc bond length is 2.85 Å. There are a spread of Pu–B bond distances ranging from 2.65–2.75 Å. Tc3- is bonded in a 7-coordinate geometry to one Pu3+ and six equivalent B atoms. There are a spread of Tc–B bond distances ranging from 2.26–2.31 Å. B is bonded in a 8-coordinate geometry to three equivalent Pu3+, three equivalent Tc3-, and two equivalent B atoms. Both B–B bond lengths are 1.81 Å.
NbVTc2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two NbVTc2 ribbons oriented in the (1, 0, 0) direction. Nb2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Nb–Tc bond lengths are 2.29 Å. V4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both V–Tc bond lengths are 2.25 Å. Tc3- is bonded in a linear geometry to one Nb2+ and one V4+ atom.
TaTc2Ga crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two TaTc2Ga ribbons oriented in the (1, 0, 0) direction. Ta3+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Ta–Tc bond lengths are 2.24 Å. Tc3- is bonded in a linear geometry to one Ta3+ and one Ga3+ atom. The Tc–Ga bond length is 2.51 Å. Ga3+ is bonded in a linear geometry to two equivalent Tc3- atoms.
ScZrTc2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two ScZrTc2 ribbons oriented in the (1, 0, 0) direction. Sc2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Sc–Tc bond lengths are 2.44 Å. Zr4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Zr–Tc bond lengths are 2.36 Å. Tc3- is bonded in a linear geometry to one Sc2+ and one Zr4+ atom.
Cs5Tc6S8Br7 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to four S2- and five Br1- atoms. There are two shorter (3.82 Å) and two longer (3.88 Å) Cs–S bond lengths. There are a spread of Cs–Br bond distances ranging from 3.42–3.93 Å. In the second Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to three equivalent S2- and three equivalent Br1- atoms. All Cs–S bond lengths are 3.70 Å. All Cs–Br bond lengths are 4.03 Å. Tc3+ is bonded to four S2- and one Br1- atom to form edge-sharing TcS4Br square pyramids. There are a spread of Tc–S bond distances ranging from 2.39–2.41 Å. The Tc–Br bond length is 2.60 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to two Cs1+ and three equivalent Tc3+ atoms. In the second S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent Cs1+ and three equivalent Tc3+ atoms. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to three Cs1+ and one Tc3+ atom. In the second Br1- site, Br1- is bonded in a trigonal planar geometry to three equivalent Cs1+ atoms.
NbMoTc2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two NbMoTc2 ribbons oriented in the (1, 0, 0) direction. Nb4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Nb–Tc bond lengths are 2.26 Å. Mo2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Mo–Tc bond lengths are 2.25 Å. Tc3- is bonded in a linear geometry to one Nb4+ and one Mo2+ atom.
ZrCrTc2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two ZrCrTc2 ribbons oriented in the (1, 0, 0) direction. Zr4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Zr–Tc bond lengths are 2.32 Å. Cr2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Cr–Tc bond lengths are 2.33 Å. Tc3- is bonded in a linear geometry to one Zr4+ and one Cr2+ atom.
Tc2FeGe crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Tc2FeGe ribbons oriented in the (1, 0, 0) direction. Tc3- is bonded in a linear geometry to one Fe2+ and one Ge4+ atom. The Tc–Fe bond length is 2.41 Å. The Tc–Ge bond length is 2.35 Å. Fe2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Ge4+ is bonded in a linear geometry to two equivalent Tc3- atoms.
CrTc2Al crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two CrTc2Al ribbons oriented in the (1, 0, 0) direction. Cr3+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Cr–Tc bond lengths are 2.13 Å. Tc3- is bonded in a linear geometry to one Cr3+ and one Al3+ atom. The Tc–Al bond length is 2.50 Å. Al3+ is bonded in a linear geometry to two equivalent Tc3- atoms.
CrTc2Ge crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two CrTc2Ge ribbons oriented in the (0, 1, 0) direction. Cr2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Cr–Tc bond lengths are 2.52 Å. Tc3- is bonded in a linear geometry to one Cr2+ and one Ge4+ atom. The Tc–Ge bond length is 2.33 Å. Ge4+ is bonded in a linear geometry to two equivalent Tc3- atoms.
Tc2Al2O5 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are two inequivalent Tc2+ sites. In the first Tc2+ site, Tc2+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Tc–O bond lengths are 2.21 Å. In the second Tc2+ site, Tc2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Tc–O bond lengths are 2.53 Å. Al3+ is bonded to five O2- atoms to form distorted corner-sharing AlO5 trigonal bipyramids. There is one shorter (1.86 Å) and four longer (1.87 Å) Al–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Tc2+ and two equivalent Al3+ atoms to form distorted OAl2Tc2 tetrahedra that share corners with two equivalent OAl2Tc4 octahedra, corners with ten equivalent OAl2Tc2 tetrahedra, and edges with five equivalent OAl2Tc2 tetrahedra. The corner-sharing octahedral tilt angles are 73°. In the second O2- site, O2- is bonded to four equivalent Tc2+ and two equivalent Al3+ atoms to form distorted OAl2Tc4 octahedra that share corners with four equivalent OAl2Tc4 octahedra, corners with eight equivalent OAl2Tc2 tetrahedra, and edges with four equivalent OAl2Tc4 octahedra. The corner-sharing octahedral tilt angles are 0°.
VMoTc2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two VMoTc2 ribbons oriented in the (1, 0, 0) direction. V4+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both V–Tc bond lengths are 2.12 Å. Mo2+ is bonded in a linear geometry to two equivalent Tc3- atoms. Both Mo–Tc bond lengths are 2.25 Å. Tc3- is bonded in a linear geometry to one V4+ and one Mo2+ atom.
TiTc2Ge is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ti2+ is bonded in a body-centered cubic geometry to eight equivalent Tc3- atoms. All Ti–Tc bond lengths are 2.67 Å. Tc3- is bonded in a body-centered cubic geometry to four equivalent Ti2+ and four equivalent Ge4+ atoms. All Tc–Ge bond lengths are 2.67 Å. Ge4+ is bonded in a body-centered cubic geometry to eight equivalent Tc3- atoms.