Cs2Pt3US6 crystallizes in the orthorhombic Fmmm space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to two equivalent S(2) and eight equivalent S(1) atoms. U(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted square co-planar geometry to two equivalent S(1) and two equivalent S(2) atoms. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Cs(1), two equivalent Cs(2), one U(1), one Pt(1), and one Pt(2) atom to form a mixture of distorted face, corner, and edge-sharing SCs3UPt2 octahedra. The corner-sharing octahedral tilt angles range from 10-101°. In the second S site, S(2) is bonded to one Cs(2), two equivalent Cs(1), one U(1), and two equivalent Pt(1) atoms to form a mixture of distorted face, corner, and edge-sharing SCs3UPt2 octahedra. The corner-sharing octahedral tilt angles range from 10-82°.
Cs2Pt3US6 crystallizes in the orthorhombic Fmmm space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. All Cs(1)-S(1) bond lengths are 3.45 Å. All Cs(1)-S(2) bond lengths are 3.44 Å. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to two equivalent S(2) and eight equivalent S(1) atoms. Both Cs(2)-S(2) bond lengths are 3.69 Å. There are four shorter (3.72 Å) and four longer (4.04 Å) Cs(2)-S(1) bond lengths. U(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. Both U(1)-S(2) bond lengths are 2.76 Å. All U(1)-S(1) bond lengths are 2.74 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted square co-planar geometry to two equivalent S(1) and two equivalent S(2) atoms. Both Pt(1)-S(1) bond lengths are 2.37 Å. Both Pt(1)-S(2) bond lengths are 2.36 Å. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent S(1) atoms. All Pt(2)-S(1) bond lengths are 2.35 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Cs(1), two equivalent Cs(2), one U(1), one Pt(1), and one Pt(2) atom to form a mixture of distorted face, corner, and edge-sharing SCs3UPt2 octahedra. The corner-sharing octahedral tilt angles range from 10-101°. In the second S site, S(2) is bonded to one Cs(2), two equivalent Cs(1), one U(1), and two equivalent Pt(1) atoms to form a mixture of distorted face, corner, and edge-sharing SCs3UPt2 octahedra. The corner-sharing octahedral tilt angles range from 10-82°.