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TaSe2 is Molybdenite-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is two-dimensional and consists of two TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2 is Molybdenite-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is two-dimensional and consists of four TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form edge-sharing TaSe6 octahedra. All Ta–Se bond lengths are 2.61 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2 is trigonal omega-like structured and crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form edge-sharing TaSe6 octahedra. All Ta–Se bond lengths are 2.61 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
PbTaSe2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ta is bonded to six equivalent Se atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.61 Å. Pb is bonded in a distorted linear geometry to two equivalent Se atoms. Both Pb–Se bond lengths are 3.08 Å. Se is bonded in a 4-coordinate geometry to three equivalent Ta and one Pb atom.
TaSe2 is Molybdenite-like structured and crystallizes in the hexagonal P-6m2 space group. The structure is two-dimensional and consists of four TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2 is Molybdenite-like structured and crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2 is Molybdenite-like structured and crystallizes in the hexagonal P6_3mc space group. The structure is two-dimensional and consists of four TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2 is Molybdenite-like structured and crystallizes in the orthorhombic Fmm2 space group. The structure is two-dimensional and consists of two TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms. In the third Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms. In the fourth Se2- site, Se2- is bonded in a distorted T-shaped geometry to three equivalent Ta4+ atoms.
Ta2Se3 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Ta3+ sites. In the first Ta3+ site, Ta3+ is bonded to six Se2- atoms to form edge-sharing TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.53–2.75 Å. In the second Ta3+ site, Ta3+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of Ta–Se bond distances ranging from 2.58–3.03 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta3+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to five Ta3+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to four Ta3+ atoms.
TaInSe2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ta3+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.61 Å. In1+ is bonded in a linear geometry to two equivalent Se2- atoms. Both In–Se bond lengths are 3.06 Å. Se2- is bonded in a 4-coordinate geometry to three equivalent Ta3+ and one In1+ atom.
TaSe2 is Molybdenite structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is two-dimensional and consists of two TaSe2 sheets oriented in the (0, 0, 1) direction. Ta4+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.61 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta4+ atoms.
TaSe2WSe2 is Molybdenite-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is two-dimensional and consists of one TaSe2 sheet oriented in the (0, 0, 1) direction and one WSe2 sheet oriented in the (0, 0, 1) direction. In the TaSe2 sheet, Ta5+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.60 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta5+ atoms. In the WSe2 sheet, W3+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing WSe6 pentagonal pyramids. All W–Se bond lengths are 2.57 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent W3+ atoms.
TaReSe4 is Molybdenite-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is two-dimensional and consists of one ReSe2 sheet oriented in the (0, 0, 1) direction and one TaSe2 sheet oriented in the (0, 0, 1) direction. In the ReSe2 sheet, Re3+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing ReSe6 pentagonal pyramids. All Re–Se bond lengths are 2.54 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Re3+ atoms. In the TaSe2 sheet, Ta5+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.61 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta5+ atoms.
TaInSe2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ta3+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.62 Å. In1+ is bonded in a 6-coordinate geometry to six equivalent Se2- atoms. All In–Se bond lengths are 3.39 Å. Se2- is bonded in a 3-coordinate geometry to three equivalent Ta3+ and three equivalent In1+ atoms.