Materials Data on Y2MgSe4 by Materials Project

MgY2Se4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mg2+ is bonded to four equivalent Se2- atoms to form MgSe4 tetrahedra that share corners with twelve equivalent YSe6 octahedra. The corner-sharing octahedral tilt angles are 56°. All Mg–Se bond lengths are 2.62 Å. Y3+ is bonded to six equivalent Se2- atoms to form YSe6 octahedra that share corners with six equivalent MgSe4 tetrahedra and edges with six equivalent YSe6 octahedra. All Y–Se bond lengths are 2.87 Å. Se2- is bonded in a distorted rectangular see-saw-like geometry to one Mg2+ and three equivalent Y3+ atoms.

二镁二硒化钇（MgY₂Se₄）具有尖晶石结构，结晶于立方晶系Fd-3m空间群。该晶体结构为三维结构。Mg²+与四个等价的Se²-成键，形成MgSe₄四面体，该四面体与十二个等价的YSe₆八面体共顶点相连。共顶点八面体的倾斜角为56°。所有Mg-Se键长均为2.62 Å。Y³+与六个等价的Se²-成键，形成YSe₆八面体；该八面体与六个等价的MgSe₄四面体共顶点相连，并与六个等价的YSe₆八面体共边相连。所有Y-Se键长均为2.87 Å。Se²-以畸变的矩形跷跷板型配位几何，与一个Mg²+和三个等价的Y³+成键。