ScRe2Si3 crystallizes in the orthorhombic Fmm2 space group. Sc(1) is bonded in a 12-coordinate geometry to one Re(2), two equivalent Re(1), two equivalent Re(3), one Si(3), one Si(4), one Si(5), two equivalent Si(2), and three equivalent Si(1) atoms. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded in a 8-coordinate geometry to two equivalent Sc(1), one Si(1), one Si(3), two equivalent Si(2), and two equivalent Si(4) atoms. In the second Re site, Re(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Si(4), two equivalent Si(1), two equivalent Si(3), and two equivalent Si(5) atoms. In the third Re site, Re(3) is bonded in a 12-coordinate geometry to four equivalent Sc(1), two equivalent Re(3), two equivalent Si(5), and four equivalent Si(1) atoms. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to three equivalent Sc(1), one Re(1), one Re(2), two equivalent Re(3), one Si(1), one Si(3), and one Si(5) atom. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to four equivalent Sc(1), four equivalent Re(1), and two equivalent Si(2) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Sc(1), two equivalent Re(1), two equivalent Re(2), one Si(4), and two equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to two equivalent Sc(1), one Re(2), four equivalent Re(1), and one Si(3) atom. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Re(2), two equivalent Re(3), and two equivalent Si(1) atoms.
ScRe2Si3 crystallizes in the orthorhombic Fmm2 space group. Sc(1) is bonded in a 12-coordinate geometry to one Re(2), two equivalent Re(1), two equivalent Re(3), one Si(3), one Si(4), one Si(5), two equivalent Si(2), and three equivalent Si(1) atoms. The Sc(1)-Re(2) bond length is 3.00 Å. There is one shorter (3.04 Å) and one longer (3.09 Å) Sc(1)-Re(1) bond length. There is one shorter (2.95 Å) and one longer (3.25 Å) Sc(1)-Re(3) bond length. The Sc(1)-Si(3) bond length is 2.91 Å. The Sc(1)-Si(4) bond length is 3.06 Å. The Sc(1)-Si(5) bond length is 2.79 Å. There is one shorter (2.80 Å) and one longer (2.82 Å) Sc(1)-Si(2) bond length. There are a spread of Sc(1)-Si(1) bond distances ranging from 2.88-2.91 Å. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded in a 8-coordinate geometry to two equivalent Sc(1), one Si(1), one Si(3), two equivalent Si(2), and two equivalent Si(4) atoms. The Re(1)-Si(1) bond length is 2.50 Å. The Re(1)-Si(3) bond length is 2.60 Å. There is one shorter (2.56 Å) and one longer (2.57 Å) Re(1)-Si(2) bond length. There is one shorter (2.47 Å) and one longer (2.51 Å) Re(1)-Si(4) bond length. In the second Re site, Re(2) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Si(4), two equivalent Si(1), two equivalent Si(3), and two equivalent Si(5) atoms. The Re(2)-Si(4) bond length is 2.44 Å. Both Re(2)-Si(1) bond lengths are 2.49 Å. Both Re(2)-Si(3) bond lengths are 2.69 Å. Both Re(2)-Si(5) bond lengths are 2.47 Å. In the third Re site, Re(3) is bonded in a 12-coordinate geometry to four equivalent Sc(1), two equivalent Re(3), two equivalent Si(5), and four equivalent Si(1) atoms. Both Re(3)-Re(3) bond lengths are 2.67 Å. There is one shorter (2.40 Å) and one longer (2.52 Å) Re(3)-Si(5) bond length. There are two shorter (2.42 Å) and two longer (2.60 Å) Re(3)-Si(1) bond lengths. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to three equivalent Sc(1), one Re(1), one Re(2), two equivalent Re(3), one Si(1), one Si(3), and one Si(5) atom. The Si(1)-Si(1) bond length is 2.87 Å. The Si(1)-Si(3) bond length is 2.62 Å. The Si(1)-Si(5) bond length is 2.64 Å. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to four equivalent Sc(1), four equivalent Re(1), and two equivalent Si(2) atoms. Both Si(2)-Si(2) bond lengths are 2.61 Å. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Sc(1), two equivalent Re(1), two equivalent Re(2), one Si(4), and two equivalent Si(1) atoms. The Si(3)-Si(4) bond length is 2.73 Å. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to two equivalent Sc(1), one Re(2), four equivalent Re(1), and one Si(3) atom. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Re(2), two equivalent Re(3), and two equivalent Si(1) atoms.