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SrHg2Bi crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two SrHg2Bi ribbons oriented in the (1, 0, 0) direction. Sr is bonded in a linear geometry to two equivalent Hg atoms. Both Sr–Hg bond lengths are 3.17 Å. Hg is bonded in a distorted linear geometry to one Sr and one Bi atom. The Hg–Bi bond length is 2.88 Å. Bi is bonded in a linear geometry to two equivalent Hg atoms.
Sr2HgBi crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Sr2HgBi ribbons oriented in the (1, 0, 0) direction. Sr is bonded in a linear geometry to one Hg and one Bi atom. The Sr–Hg bond length is 3.51 Å. The Sr–Bi bond length is 3.00 Å. Hg is bonded in a linear geometry to two equivalent Sr atoms. Bi is bonded in a linear geometry to two equivalent Sr atoms.