Cr3Ga4 crystallizes in the monoclinic C2/m space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a cuboctahedral geometry to four equivalent Cr(4), two equivalent Ga(1), two equivalent Ga(2), and four equivalent Ga(3) atoms. In the second Cr site, Cr(2) is bonded in a 7-coordinate geometry to one Cr(3), one Ga(1), two equivalent Ga(3), and four equivalent Ga(4) atoms. In the third Cr site, Cr(3) is bonded in a 11-coordinate geometry to one Cr(2), two equivalent Cr(4), two equivalent Ga(2), two equivalent Ga(3), and four equivalent Ga(4) atoms. In the fourth Cr site, Cr(4) is bonded in a 9-coordinate geometry to one Cr(1), one Cr(3), one Ga(2), one Ga(4), two equivalent Ga(1), and three equivalent Ga(3) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), and four equivalent Cr(4) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Cr(1), two equivalent Cr(3), two equivalent Cr(4), one Ga(2), two equivalent Ga(3), and two equivalent Ga(4) atoms. In the third Ga site, Ga(3) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), one Cr(3), three equivalent Cr(4), and one Ga(2) atom. In the fourth Ga site, Ga(4) is bonded in a 6-coordinate geometry to one Cr(4), two equivalent Cr(2), two equivalent Cr(3), one Ga(2), and one Ga(4) atom.
Cr3Ga4 crystallizes in the monoclinic C2/m space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a cuboctahedral geometry to four equivalent Cr(4), two equivalent Ga(1), two equivalent Ga(2), and four equivalent Ga(3) atoms. All Cr(1)-Cr(4) bond lengths are 2.53 Å. Both Cr(1)-Ga(1) bond lengths are 2.79 Å. Both Cr(1)-Ga(2) bond lengths are 2.68 Å. All Cr(1)-Ga(3) bond lengths are 2.65 Å. In the second Cr site, Cr(2) is bonded in a 7-coordinate geometry to one Cr(3), one Ga(1), two equivalent Ga(3), and four equivalent Ga(4) atoms. The Cr(2)-Cr(3) bond length is 2.65 Å. The Cr(2)-Ga(1) bond length is 2.51 Å. Both Cr(2)-Ga(3) bond lengths are 2.53 Å. There are two shorter (2.49 Å) and two longer (2.50 Å) Cr(2)-Ga(4) bond lengths. In the third Cr site, Cr(3) is bonded in a 11-coordinate geometry to one Cr(2), two equivalent Cr(4), two equivalent Ga(2), two equivalent Ga(3), and four equivalent Ga(4) atoms. Both Cr(3)-Cr(4) bond lengths are 2.43 Å. There is one shorter (2.65 Å) and one longer (2.77 Å) Cr(3)-Ga(2) bond length. Both Cr(3)-Ga(3) bond lengths are 2.55 Å. There are two shorter (2.58 Å) and two longer (2.80 Å) Cr(3)-Ga(4) bond lengths. In the fourth Cr site, Cr(4) is bonded in a 9-coordinate geometry to one Cr(1), one Cr(3), one Ga(2), one Ga(4), two equivalent Ga(1), and three equivalent Ga(3) atoms. The Cr(4)-Ga(2) bond length is 2.64 Å. The Cr(4)-Ga(4) bond length is 2.54 Å. There is one shorter (2.52 Å) and one longer (2.56 Å) Cr(4)-Ga(1) bond length. There are a spread of Cr(4)-Ga(3) bond distances ranging from 2.58-2.63 Å. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), and four equivalent Cr(4) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Cr(1), two equivalent Cr(3), two equivalent Cr(4), one Ga(2), two equivalent Ga(3), and two equivalent Ga(4) atoms. The Ga(2)-Ga(2) bond length is 2.74 Å. Both Ga(2)-Ga(3) bond lengths are 2.87 Å. Both Ga(2)-Ga(4) bond lengths are 2.93 Å. In the third Ga site, Ga(3) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), one Cr(3), three equivalent Cr(4), and one Ga(2) atom. In the fourth Ga site, Ga(4) is bonded in a 6-coordinate geometry to one Cr(4), two equivalent Cr(2), two equivalent Cr(3), one Ga(2), and one Ga(4) atom. The Ga(4)-Ga(4) bond length is 2.53 Å.