Materials Data on Ca3Eu by Materials Project

Ca3Eu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ca is bonded to eight equivalent Ca and four equivalent Eu atoms to form CaCa8Eu4 cuboctahedra that share corners with twelve equivalent CaCa8Eu4 cuboctahedra, edges with eight equivalent EuCa12 cuboctahedra, edges with sixteen equivalent CaCa8Eu4 cuboctahedra, faces with four equivalent EuCa12 cuboctahedra, and faces with fourteen equivalent CaCa8Eu4 cuboctahedra. All Ca–Ca bond lengths are 4.12 Å. All Ca–Eu bond lengths are 4.12 Å. Eu is bonded to twelve equivalent Ca atoms to form EuCa12 cuboctahedra that share corners with twelve equivalent EuCa12 cuboctahedra, edges with twenty-four equivalent CaCa8Eu4 cuboctahedra, faces with six equivalent EuCa12 cuboctahedra, and faces with twelve equivalent CaCa8Eu4 cuboctahedra.

Ca₃Eu为铀硅化物型晶体结构，结晶于立方Pm-3m空间群。该结构为三维空间结构。Ca原子与8个等价的Ca原子及4个等价的Eu原子成键，形成CaCa₈Eu₄立方八面体（cuboctahedron）；该立方八面体与12个等价的CaCa₈Eu₄立方八面体共享顶角，与8个等价的EuCa₁₂立方八面体（cuboctahedron）共享棱，与16个等价的CaCa₈Eu₄立方八面体共享棱，与4个等价的EuCa₁₂立方八面体共享面，与14个等价的CaCa₈Eu₄立方八面体共享面。所有Ca–Ca键长均为4.12 Å，所有Ca–Eu键长均为4.12 Å。Eu原子与12个等价的Ca原子成键，形成EuCa₁₂立方八面体；该立方八面体与12个等价的EuCa₁₂立方八面体共享顶角，与24个等价的CaCa₈Eu₄立方八面体共享棱，与6个等价的EuCa₁₂立方八面体共享面，与12个等价的CaCa₈Eu₄立方八面体共享面。