GdSi crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 7-coordinate geometry to seven Si(1,1) atoms. In the second Gd site, Gd(1) is bonded in a 7-coordinate geometry to seven Si(1,1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to seven Gd(1,1) and two equivalent Si(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to seven Gd(1,1) and two equivalent Si(1) atoms.
GdSi crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 7-coordinate geometry to seven Si(1,1) atoms. There are a spread of Gd(1)-Si(1,1) bond distances ranging from 2.99-3.13 Å. In the second Gd site, Gd(1) is bonded in a 7-coordinate geometry to seven Si(1,1) atoms. There are a spread of Gd(1)-Si(1,1) bond distances ranging from 2.99-3.13 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to seven Gd(1,1) and two equivalent Si(1) atoms. Both Si(1)-Si(1) bond lengths are 2.45 Å. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to seven Gd(1,1) and two equivalent Si(1) atoms. Both Si(1)-Si(1) bond lengths are 2.45 Å.