Materials Data on YSi3 by Materials Project
YSi3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded in a 12-coordinate geometry to twelve Si atoms. There are a spread of Y–Si bond distances ranging from 3.01–3.27 Å. In the second Y site, Y is bonded in a 12-coordinate geometry to twelve Si atoms. There are four shorter (2.98 Å) and eight longer (3.03 Å) Y–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to four Y and five Si atoms. There are one shorter (2.48 Å) and four longer (2.58 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 9-coordinate geometry to four Y and five Si atoms. There are one shorter (2.43 Å) and two longer (2.69 Å) Si–Si bond lengths.