Materials Data on Dy2Zn17 by Materials Project
Dy2Zn17 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Dy is bonded in a 10-coordinate geometry to nineteen Zn atoms. There are a spread of Dy–Zn bond distances ranging from 3.11–3.46 Å. There are four inequivalent Zn sites. In the first Zn site, Zn is bonded to three equivalent Dy and nine Zn atoms to form distorted ZnDy3Zn9 cuboctahedra that share corners with twenty-three ZnDy2Zn10 cuboctahedra, edges with ten ZnDy2Zn10 cuboctahedra, and faces with twenty ZnDy3Zn9 cuboctahedra. There are a spread of Zn–Zn bond distances ranging from 2.54–2.87 Å. In the second Zn site, Zn is bonded in a 2-coordinate geometry to one Dy and thirteen Zn atoms. There are a spread of Zn–Zn bond distances ranging from 2.64–2.98 Å. In the third Zn site, Zn is bonded to two equivalent Dy and ten Zn atoms to form ZnDy2Zn10 cuboctahedra that share corners with twenty-two ZnDy2Zn10 cuboctahedra, edges with ten ZnDy2Zn10 cuboctahedra, and faces with eighteen ZnDy3Zn9 cuboctahedra. All Zn–Zn bond lengths are 2.59 Å. In the fourth Zn site, Zn is bonded to two equivalent Dy and ten Zn atoms to form distorted ZnDy2Zn10 cuboctahedra that share corners with twenty-four ZnDy2Zn10 cuboctahedra, edges with five ZnDy2Zn10 cuboctahedra, and faces with twenty-one ZnDy3Zn9 cuboctahedra. Both Zn–Zn bond lengths are 2.67 Å.