Materials Data on Ag(AsSe2)3 by Materials Project

Ag(AsSe2)2As(Se)2 crystallizes in the orthorhombic Cmmm space group. The structure is two-dimensional and consists of two arsenic molecules; four selenium molecules; and one Ag(AsSe2)2 sheet oriented in the (0, 0, 1) direction. In the Ag(AsSe2)2 sheet, Ag1+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent Se2- atoms. All Ag–Se bond lengths are 2.68 Å. As+3.67+ is bonded in a linear geometry to two equivalent Se2- atoms. Both As–Se bond lengths are 2.39 Å. Se2- is bonded in a distorted linear geometry to one Ag1+, one As+3.67+, and one Se2- atom. The Se–Se bond length is 2.60 Å.

Ag(AsSe₂)₂As(Se)₂晶体属于正交晶系Cmmm空间群。该晶体为二维结构，包含两个砷分子、四个硒分子，以及一片沿(0, 0, 1)方向取向的Ag(AsSe₂)₂片层。在Ag(AsSe₂)₂片层中，Ag⁺以畸变矩形跷跷板型配位几何与四个等价的Se²⁻原子成键，所有Ag–Se键长均为2.68 Å。As⁺³·⁶⁷以直线型配位几何与两个等价的Se²⁻原子成键，二者As–Se键长均为2.39 Å。Se²⁻以畸变直线型配位与一个Ag⁺、一个As⁺³·⁶⁷以及一个Se²⁻原子成键，其Se–Se键长为2.60 Å。