PrGaSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Pr(1) is bonded to six equivalent Ga(1) and six Si(1,1) atoms to form a mixture of edge and face-sharing PrGa6Si6 cuboctahedra. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. In the third Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ga(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms. In the fourth Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms.
PrGaSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Pr(1) is bonded to six equivalent Ga(1) and six Si(1,1) atoms to form a mixture of edge and face-sharing PrGa6Si6 cuboctahedra. There are two shorter (3.19 Å) and four longer (3.23 Å) Pr(1)-Ga(1) bond lengths. There are two shorter (3.19 Å) and four longer (3.23 Å) Pr(1)-Si(1,1) bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. There are two shorter (3.19 Å) and four longer (3.23 Å) Ga(1)-Pr(1) bond lengths. There is one shorter (2.38 Å) and two longer (2.43 Å) Ga(1)-Si(1,1) bond lengths. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. There is one shorter (2.38 Å) and two longer (2.43 Å) Ga(1)-Si(1,1) bond lengths. In the third Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Si(1,1) atoms. There are two shorter (3.19 Å) and four longer (3.23 Å) Ga(1)-Pr(1) bond lengths. There is one shorter (2.38 Å) and two longer (2.43 Å) Ga(1)-Si(1,1) bond lengths. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ga(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms. There are two shorter (3.19 Å) and four longer (3.23 Å) Si(1)-Pr(1) bond lengths. In the fourth Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three Ga(1,1) atoms. There are two shorter (3.19 Å) and four longer (3.23 Å) Si(1)-Pr(1) bond lengths. The Si(1)-Ga(1) bond length is 2.38 Å.