Materials Data on Cs2Se by Materials Project

Cs2Se crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.69–3.88 Å. In the second Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to four equivalent Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.54–3.92 Å. Se2- is bonded in a 8-coordinate geometry to eight Cs1+ atoms.

二硒化铯（Cs2Se）结晶于单斜晶系P2₁空间群。该晶体结构为三维结构。体系中存在两个不等价的Cs1+位点。在第一个Cs1+位点中，Cs1+以畸变矩形跷跷板型配位几何与四个等价的Se2-原子成键，Cs-Se键的键长分布区间为3.69~3.88埃（Å）。在第二个Cs1+位点中，Cs1+以四配位构型与四个等价的Se2-原子成键，其Cs-Se键的键长分布区间为3.54~3.92埃（Å）。Se2-以八配位构型与八个Cs1+原子成键。