Cs2Pt3Se4 crystallizes in the orthorhombic Fmmm space group. Cs(1) is bonded in a 14-coordinate geometry to two equivalent Pt(2), four equivalent Pt(1), and eight equivalent Se(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 four equivalent Cs(1) and four equivalent Se(1) atoms. In the second Pt site, Pt(2) is bonded in a distorted square co-planar geometry to four equivalent Cs(1) and four equivalent Se(1) atoms. Se(1) is bonded in a 7-coordinate geometry to four equivalent Cs(1), one Pt(2), and two equivalent Pt(1) atoms.
Cs2Pt3Se4 crystallizes in the orthorhombic Fmmm space group. Cs(1) is bonded in a 14-coordinate geometry to two equivalent Pt(2), four equivalent Pt(1), and eight equivalent Se(1) atoms. Both Cs(1)-Pt(2) bond lengths are 3.93 Å. All Cs(1)-Pt(1) bond lengths are 3.90 Å. There are a spread of Cs(1)-Se(1) bond distances ranging from 3.83-3.93 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted square co-planar geometry to four equivalent Cs(1) and four equivalent Se(1) atoms. All Pt(1)-Se(1) bond lengths are 2.48 Å. In the second Pt site, Pt(2) is bonded in a distorted square co-planar geometry to four equivalent Cs(1) and four equivalent Se(1) atoms. All Pt(2)-Se(1) bond lengths are 2.48 Å. Se(1) is bonded in a 7-coordinate geometry to four equivalent Cs(1), one Pt(2), and two equivalent Pt(1) atoms.