Ca2ZnGa3 crystallizes in the monoclinic Cm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 12-coordinate geometry to three equivalent Zn(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. In the second Ca site, Ca(2) is bonded in a 12-coordinate geometry to three equivalent Zn(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. Zn(1) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Zn(1), one Ga(2), and two equivalent Ga(3) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), two equivalent Zn(1), one Ga(1), and one Ga(3) atom. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Zn(1), one Ga(2), and two equivalent Ga(1) atoms.
Ca2ZnGa3 crystallizes in the monoclinic Cm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 12-coordinate geometry to three equivalent Zn(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. There is one shorter (3.18 Å) and two longer (3.33 Å) Ca(1)-Zn(1) bond lengths. There are two shorter (3.07 Å) and one longer (3.21 Å) Ca(1)-Ga(1) bond length. There are two shorter (3.08 Å) and one longer (3.16 Å) Ca(1)-Ga(2) bond length. There is one shorter (3.25 Å) and two longer (3.30 Å) Ca(1)-Ga(3) bond lengths. In the second Ca site, Ca(2) is bonded in a 12-coordinate geometry to three equivalent Zn(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. There are two shorter (3.08 Å) and one longer (3.20 Å) Ca(2)-Zn(1) bond length. There is one shorter (3.25 Å) and two longer (3.28 Å) Ca(2)-Ga(1) bond lengths. There is one shorter (3.23 Å) and two longer (3.31 Å) Ca(2)-Ga(2) bond lengths. There are two shorter (3.06 Å) and one longer (3.19 Å) Ca(2)-Ga(3) bond length. Zn(1) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms. The Zn(1)-Ga(1) bond length is 2.64 Å. The Zn(1)-Ga(3) bond length is 2.79 Å. Both Zn(1)-Ga(2) bond lengths are 2.58 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Zn(1), one Ga(2), and two equivalent Ga(3) atoms. The Ga(1)-Ga(2) bond length is 2.84 Å. Both Ga(1)-Ga(3) bond lengths are 2.62 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), two equivalent Zn(1), one Ga(1), and one Ga(3) atom. The Ga(2)-Ga(3) bond length is 2.63 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ca(1), three equivalent Ca(2), one Zn(1), one Ga(2), and two equivalent Ga(1) atoms.