Materials Data on La2Si3 by Materials Project

La2Si3 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent La2+ sites. In the first La2+ site, La2+ is bonded in a 8-coordinate geometry to eight Si+1.33- atoms. There are a spread of La–Si bond distances ranging from 3.12–3.29 Å. In the second La2+ site, La2+ is bonded in a 10-coordinate geometry to ten Si+1.33- atoms. There are a spread of La–Si bond distances ranging from 3.15–3.27 Å. There are three inequivalent Si+1.33- sites. In the first Si+1.33- site, Si+1.33- is bonded in a 7-coordinate geometry to six La2+ and one Si+1.33- atom. The Si–Si bond length is 2.35 Å. In the second Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to six La2+ and two equivalent Si+1.33- atoms. Both Si–Si bond lengths are 2.40 Å. In the third Si+1.33- site, Si+1.33- is bonded in a 9-coordinate geometry to six La2+ and three Si+1.33- atoms.

La₂Si₃ 结晶于正交晶系Imm2空间群。该结构为三维结构。体系中存在两个不等价的La²+配位位点：在第一个La²+位点中，La²+以八配位几何与八个Si+1.33-原子成键，La-Si键长分布范围为3.12~3.29 埃。在第二个La²+位点中，La²+以十配位几何与十个Si+1.33-原子成键，La-Si键长分布范围为3.15~3.27 埃。体系中另有三个不等价的Si+1.33-配位位点：在第一个Si+1.33-位点中，Si+1.33-以七配位几何与六个La²+原子及一个Si+1.33-原子成键，Si-Si键长为2.35 埃。在第二个Si+1.33-位点中，Si+1.33-以八配位几何与六个La²+原子及两个等价的Si+1.33-原子成键，两处Si-Si键长均为2.40 埃。在第三个Si+1.33-位点中，Si+1.33-以九配位几何与六个La²+原子及三个Si+1.33-原子成键。