Materials Data on Yb(DyS2)2 by Materials Project
Yb(DyS2)2 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. Yb2+ is bonded to eight equivalent S2- atoms to form distorted YbS8 hexagonal bipyramids that share corners with eight equivalent DyS8 hexagonal bipyramids, edges with four equivalent YbS8 hexagonal bipyramids, and faces with eight equivalent DyS8 hexagonal bipyramids. There are four shorter (2.81 Å) and four longer (3.02 Å) Yb–S bond lengths. Dy3+ is bonded to eight equivalent S2- atoms to form distorted DyS8 hexagonal bipyramids that share corners with four equivalent YbS8 hexagonal bipyramids, corners with four equivalent DyS8 hexagonal bipyramids, edges with four equivalent DyS8 hexagonal bipyramids, faces with four equivalent YbS8 hexagonal bipyramids, and faces with four equivalent DyS8 hexagonal bipyramids. There are a spread of Dy–S bond distances ranging from 2.76–2.99 Å. S2- is bonded to two equivalent Yb2+ and four equivalent Dy3+ atoms to form a mixture of distorted face, edge, and corner-sharing SYb2Dy4 octahedra. The corner-sharing octahedra tilt angles range from 17–50°.