Sc(VSi)5 crystallizes in the monoclinic C2/m space group. Sc(1) is bonded in a 7-coordinate geometry to two equivalent V(4), one Si(2), one Si(4), two equivalent Si(3), and three equivalent Si(1) atoms. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one Si(4), one Si(5), two equivalent Si(1), and two equivalent Si(2) atoms. In the second V site, V(2) is bonded in a 7-coordinate geometry to one Si(1), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. In the third V site, V(3) is bonded in a 7-coordinate geometry to one Si(2), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. In the fourth V site, V(4) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Si(1), one Si(5), two equivalent Si(3), and three equivalent Si(2) atoms. There are five inequivalent Si sites. In the first Si site, Si(5) is bonded in a 10-coordinate geometry to one V(4), two equivalent V(1), two equivalent V(2), two equivalent V(3), one Si(5), and two equivalent Si(4) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), one V(2), one V(4), and four equivalent V(1) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to one Sc(1), one V(3), three equivalent V(4), and four equivalent V(1) atoms. In the fourth Si site, Si(3) is bonded in a 10-coordinate geometry to two equivalent Sc(1), two equivalent V(2), two equivalent V(3), two equivalent V(4), and two equivalent Si(3) atoms. In the fifth Si site, Si(4) is bonded in a 8-coordinate geometry to one Sc(1), two equivalent V(1), two equivalent V(2), two equivalent V(3), one Si(4), and two equivalent Si(5) atoms.
Sc(VSi)5 crystallizes in the monoclinic C2/m space group. Sc(1) is bonded in a 7-coordinate geometry to two equivalent V(4), one Si(2), one Si(4), two equivalent Si(3), and three equivalent Si(1) atoms. Both Sc(1)-V(4) bond lengths are 3.03 Å. The Sc(1)-Si(2) bond length is 2.72 Å. The Sc(1)-Si(4) bond length is 2.64 Å. Both Sc(1)-Si(3) bond lengths are 2.76 Å. There is one shorter (2.75 Å) and two longer (2.79 Å) Sc(1)-Si(1) bond lengths. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one Si(4), one Si(5), two equivalent Si(1), and two equivalent Si(2) atoms. The V(1)-Si(4) bond length is 2.47 Å. The V(1)-Si(5) bond length is 2.45 Å. There is one shorter (2.54 Å) and one longer (2.62 Å) V(1)-Si(1) bond length. There is one shorter (2.53 Å) and one longer (2.58 Å) V(1)-Si(2) bond length. In the second V site, V(2) is bonded in a 7-coordinate geometry to one Si(1), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. The V(2)-Si(1) bond length is 2.44 Å. Both V(2)-Si(3) bond lengths are 2.52 Å. Both V(2)-Si(4) bond lengths are 2.75 Å. There is one shorter (2.38 Å) and one longer (2.54 Å) V(2)-Si(5) bond length. In the third V site, V(3) is bonded in a 7-coordinate geometry to one Si(2), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. The V(3)-Si(2) bond length is 2.47 Å. Both V(3)-Si(3) bond lengths are 2.53 Å. There is one shorter (2.41 Å) and one longer (2.51 Å) V(3)-Si(4) bond length. Both V(3)-Si(5) bond lengths are 2.74 Å. In the fourth V site, V(4) is bonded in a 9-coordinate geometry to two equivalent Sc(1), one Si(1), one Si(5), two equivalent Si(3), and three equivalent Si(2) atoms. The V(4)-Si(1) bond length is 2.67 Å. The V(4)-Si(5) bond length is 2.57 Å. Both V(4)-Si(3) bond lengths are 2.75 Å. There is one shorter (2.65 Å) and two longer (2.82 Å) V(4)-Si(2) bond lengths. There are five inequivalent Si sites. In the first Si site, Si(5) is bonded in a 10-coordinate geometry to one V(4), two equivalent V(1), two equivalent V(2), two equivalent V(3), one Si(5), and two equivalent Si(4) atoms. The Si(5)-Si(5) bond length is 2.49 Å. Both Si(5)-Si(4) bond lengths are 2.79 Å. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), one V(2), one V(4), and four equivalent V(1) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to one Sc(1), one V(3), three equivalent V(4), and four equivalent V(1) atoms. In the fourth Si site, Si(3) is bonded in a 10-coordinate geometry to two equivalent Sc(1), two equivalent V(2), two equivalent V(3), two equivalent V(4), and two equivalent Si(3) atoms. There is one shorter (2.43 Å) and one longer (2.50 Å) Si(3)-Si(3) bond length. In the fifth Si site, Si(4) is bonded in a 8-coordinate geometry to one Sc(1), two equivalent V(1), two equivalent V(2), two equivalent V(3), one Si(4), and two equivalent Si(5) atoms. The Si(4)-Si(4) bond length is 2.40 Å.