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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SrTlHg2 by Materials Project

SrHg2Tl is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sr is bonded in a body-centered cubic geometry to eight equivalent Hg and six equivalent Tl atoms. All Sr–Hg bond lengths are 3.36 Å. All Sr–Tl bond lengths are 3.88 Å. Hg is bonded in a body-centered cubic geometry to four equivalent Sr and four equivalent Tl atoms. All Hg–Tl bond lengths are 3.36 Å. Tl is bonded in a distorted body-centered cubic geometry to six equivalent Sr and eight equivalent Hg atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr2TlHg by Materials Project

Sr2HgTl is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sr is bonded in a body-centered cubic geometry to four equivalent Hg and four equivalent Tl atoms. All Sr–Hg bond lengths are 3.52 Å. All Sr–Tl bond lengths are 3.52 Å. Hg is bonded in a body-centered cubic geometry to eight equivalent Sr atoms. Tl is bonded in a body-centered cubic geometry to eight equivalent Sr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(TlHg)2 by Materials Project

Sr(HgTl)2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to eight Hg and four equivalent Tl atoms. There are a spread of Sr–Hg bond distances ranging from 3.58–3.70 Å. All Sr–Tl bond lengths are 3.65 Å. There are two inequivalent Hg sites. In the first Hg site, Hg is bonded in a 9-coordinate geometry to four equivalent Sr, three Hg, and two equivalent Tl atoms. There are two shorter (2.91 Å) and one longer (2.92 Å) Hg–Hg bond lengths. Both Hg–Tl bond lengths are 3.17 Å. In the second Hg site, Hg is bonded in a 8-coordinate geometry to four equivalent Sr, two equivalent Hg, and two equivalent Tl atoms. Both Hg–Tl bond lengths are 3.14 Å. Tl is bonded in a 2-coordinate geometry to two equivalent Sr, two Hg, and five equivalent Tl atoms. There are one shorter (3.20 Å) and four longer (3.38 Å) Tl–Tl bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr2TlHg by Materials Project

Sr2HgTl crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Sr2HgTl ribbons oriented in the (1, 0, 0) direction. Sr is bonded in a linear geometry to one Hg and one Tl atom. The Sr–Hg bond length is 3.51 Å. The Sr–Tl bond length is 3.22 Å. Hg is bonded in a linear geometry to two equivalent Sr atoms. Tl is bonded in a linear geometry to two equivalent Sr atoms.

36 MATERIALS SCIENCE↗