Materials Data on SmAu3 by Materials Project

SmAu3 is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. Sm3+ is bonded to twelve Au1- atoms to form a mixture of face, edge, and corner-sharing SmAu12 cuboctahedra. There are a spread of Sm–Au bond distances ranging from 3.06–3.19 Å. There are two inequivalent Au1- sites. In the first Au1- site, Au1- is bonded in a 4-coordinate geometry to four equivalent Sm3+ atoms. In the second Au1- site, Au1- is bonded in a distorted see-saw-like geometry to four equivalent Sm3+ atoms.

SmAu₃ 具有β-Cu₃Ti型晶体结构，结晶于正交晶系的Pmmn空间群。该结构为三维结构。Sm³+与十二个Au⁻配位，形成兼具面共享、棱共享与顶点共享特征的SmAu₁₂立方八面体。Sm-Au键长分布范围为3.06~3.19 Å。体系中存在两个不等价的Au⁻配位位点：在第一个Au⁻位点中，Au⁻采取四配位几何构型，与四个等价的Sm³+结合；在第二个Au⁻位点中，Au⁻采取畸变跷跷板型配位构型，同样与四个等价的Sm³+结合。