Materials Data on Tl3(SO4)2 by Materials Project

Abstract

Tl3(SO4)2 crystallizes in the monoclinic C2 space group. The structure is two-dimensional and consists of one Tl3(SO4)2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Tl sites. In the first Tl site, Tl is bonded to six O atoms to form distorted TlO6 octahedra that share corners with six equivalent SO4 tetrahedra. There are a spread of Tl–O bond distances ranging from 2.64–2.72 Å. In the second Tl site, Tl is bonded in a single-bond geometry to one O atom. The Tl–O bond length is 2.61 Å. S is bonded to four O atoms to form SO4 tetrahedra that share corners with three equivalent TlO6 octahedra. The corner-sharing octahedra tilt angles range from 61–65°. There is one shorter (1.47 Å) and three longer (1.51 Å) S–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Tl and one S atom. In the second O site, O is bonded in a distorted single-bond geometry to one Tl and one S atom. In the third O site, O is bonded in a distorted single-bond geometry to one Tl and one S atom. In the fourth O site, O is bonded in a distorted linear geometry to one Tl and one S atom.