Sc2Re3Si4 is delta Molybdenum Boride-derived structured and crystallizes in the tetragonal P4_12_12 space group. Sc(1) is bonded in a 11-coordinate geometry to two equivalent Re(1), two equivalent Re(2), three equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a 14-coordinate geometry to four equivalent Sc(1), four equivalent Re(2), two equivalent Si(2), and four equivalent Si(1) atoms. In the second Re site, Re(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Re(1), three equivalent Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), two equivalent Re(1), three equivalent Re(2), and one Si(2) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sc(1), one Re(1), three equivalent Re(2), and one Si(1) atom.
Sc2Re3Si4 is delta Molybdenum Boride-derived structured and crystallizes in the tetragonal P4_12_12 space group. Sc(1) is bonded in a 11-coordinate geometry to two equivalent Re(1), two equivalent Re(2), three equivalent Si(1), and four equivalent Si(2) atoms. There is one shorter (3.06 Å) and one longer (3.13 Å) Sc(1)-Re(1) bond length. There is one shorter (2.96 Å) and one longer (3.17 Å) Sc(1)-Re(2) bond length. There is one shorter (2.70 Å) and two longer (2.77 Å) Sc(1)-Si(1) bond lengths. There are a spread of Sc(1)-Si(2) bond distances ranging from 2.72-2.93 Å. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a 14-coordinate geometry to four equivalent Sc(1), four equivalent Re(2), two equivalent Si(2), and four equivalent Si(1) atoms. There are two shorter (3.00 Å) and two longer (3.02 Å) Re(1)-Re(2) bond lengths. Both Re(1)-Si(2) bond lengths are 2.57 Å. There are two shorter (2.51 Å) and two longer (2.62 Å) Re(1)-Si(1) bond lengths. In the second Re site, Re(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Re(1), three equivalent Si(1), and three equivalent Si(2) atoms. There are a spread of Re(2)-Si(1) bond distances ranging from 2.49-2.58 Å. There are two shorter (2.41 Å) and one longer (2.49 Å) Re(2)-Si(2) bond length. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), two equivalent Re(1), three equivalent Re(2), and one Si(2) atom. The Si(1)-Si(2) bond length is 2.54 Å. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sc(1), one Re(1), three equivalent Re(2), and one Si(1) atom.