DOE OSTI2020
(WOBr4)2(Te)9(Te2Br)2(TeBr)2 crystallizes in the triclinic P1 space group. The structure is one-dimensional and consists of nine tellurium molecules; one Te2Br ribbon oriented in the (1, 0, 0) direction; one TeBr ribbon oriented in the (1, 0, 0) direction; and one WOBr4 ribbon oriented in the (1, 0, 0) direction. In the Te2Br ribbon, there are four inequivalent Te+0.40+ sites. In the first Te+0.40+ site, Te+0.40+ is bonded in an L-shaped geometry to two Br1- atoms. Both Te–Br bond lengths are 3.10 Å. In the second Te+0.40+ site, Te+0.40+ is bonded in a distorted L-shaped geometry to two Br1- atoms. Both Te–Br bond lengths are 3.14 Å. In the third Te+0.40+ site, Te+0.40+ is bonded in an L-shaped geometry to two Br1- atoms. There are one shorter (3.20 Å) and one longer (3.21 Å) Te–Br bond lengths. In the fourth Te+0.40+ site, Te+0.40+ is bonded in a distorted L-shaped geometry to two Br1- atoms. There are one shorter (3.12 Å) and one longer (3.13 Å) Te–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted square co-planar geometry to four Te+0.40+ atoms. In the second Br1- site, Br1- is bonded in a distorted square co-planar geometry to four Te+0.40+ atoms. In the TeBr ribbon, there are two inequivalent Te+0.40+ sites. In the first Te+0.40+ site, Te+0.40+ is bonded in an L-shaped geometry to two Br1- atoms. There are one shorter (2.90 Å) and one longer (2.92 Å) Te–Br bond lengths. In the second Te+0.40+ site, Te+0.40+ is bonded in an L-shaped geometry to two Br1- atoms. Both Te–Br bond lengths are 2.95 Å. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in an L-shaped geometry to two Te+0.40+ atoms. In the second Br1- site, Br1- is bonded in an L-shaped geometry to two Te+0.40+ atoms. In the WOBr4 ribbon, there are two inequivalent W5+ sites. In the first W5+ site, W5+ is bonded to two O2- and four Br1- atoms to form distorted corner-sharing WBr4O2 octahedra. The corner-sharing octahedral tilt angles are 1°. There is one shorter (1.86 Å) and one longer (2.10 Å) W–O bond length. There are a spread of W–Br bond distances ranging from 2.56–2.58 Å. In the second W5+ site, W5+ is bonded to two O2- and four Br1- atoms to form distorted corner-sharing WBr4O2 octahedra. The corner-sharing octahedral tilt angles are 1°. There is one shorter (1.85 Å) and one longer (2.12 Å) W–O bond length. There are a spread of W–Br bond distances ranging from 2.54–2.59 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two W5+ atoms. In the second O2- site, O2- is bonded in a linear geometry to two W5+ atoms. There are eight inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the second Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the fourth Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the fifth Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the sixth Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the seventh Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom. In the eighth Br1- site, Br1- is bonded in a distorted single-bond geometry to one W5+ atom.