VFe3Si4 crystallizes in the trigonal R3 space group. V(1) is bonded in a 13-coordinate geometry to six equivalent Fe(1), one Si(1), and six equivalent Si(2) atoms. Fe(1) is bonded in a 9-coordinate geometry to two equivalent V(1), two equivalent Si(1), and five equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to one V(1) and six equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to two equivalent V(1) and five equivalent Fe(1) atoms.
VFe3Si4 crystallizes in the trigonal R3 space group. V(1) is bonded in a 13-coordinate geometry to six equivalent Fe(1), one Si(1), and six equivalent Si(2) atoms. There are three shorter (2.74 Å) and three longer (2.75 Å) V(1)-Fe(1) bond lengths. The V(1)-Si(1) bond length is 2.39 Å. There are three shorter (2.41 Å) and three longer (2.55 Å) V(1)-Si(2) bond lengths. Fe(1) is bonded in a 9-coordinate geometry to two equivalent V(1), two equivalent Si(1), and five equivalent Si(2) atoms. There is one shorter (2.36 Å) and one longer (2.51 Å) Fe(1)-Si(1) bond length. There are a spread of Fe(1)-Si(2) bond distances ranging from 2.27-2.56 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to one V(1) and six equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to two equivalent V(1) and five equivalent Fe(1) atoms.