Ca3Mg4Zn11 crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded in a 15-coordinate geometry to one Mg(1), four equivalent Mg(2), two equivalent Zn(2), two equivalent Zn(3), and six equivalent Zn(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to three equivalent Ca(1) and six equivalent Zn(1) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent Ca(1), two equivalent Zn(2), two equivalent Zn(3), and four equivalent Zn(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 12-coordinate geometry to three equivalent Ca(1), one Mg(1), two equivalent Mg(2), one Zn(3), two equivalent Zn(2), and three equivalent Zn(1) atoms. In the second Zn site, Zn(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Ca(1), two equivalent Mg(2), two equivalent Zn(3), and four equivalent Zn(1) atoms. In the third Zn site, Zn(3) is bonded in a 12-coordinate geometry to three equivalent Ca(1), three equivalent Mg(2), three equivalent Zn(1), and three equivalent Zn(2) atoms.
Ca3Mg4Zn11 crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded in a 15-coordinate geometry to one Mg(1), four equivalent Mg(2), two equivalent Zn(2), two equivalent Zn(3), and six equivalent Zn(1) atoms. The Ca(1)-Mg(1) bond length is 3.23 Å. All Ca(1)-Mg(2) bond lengths are 3.40 Å. Both Ca(1)-Zn(2) bond lengths are 3.36 Å. Both Ca(1)-Zn(3) bond lengths are 3.23 Å. There are two shorter (3.25 Å) and four longer (3.30 Å) Ca(1)-Zn(1) bond lengths. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to three equivalent Ca(1) and six equivalent Zn(1) atoms. All Mg(1)-Zn(1) bond lengths are 2.92 Å. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to four equivalent Ca(1), two equivalent Zn(2), two equivalent Zn(3), and four equivalent Zn(1) atoms. Both Mg(2)-Zn(2) bond lengths are 2.62 Å. Both Mg(2)-Zn(3) bond lengths are 2.70 Å. All Mg(2)-Zn(1) bond lengths are 2.92 Å. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 12-coordinate geometry to three equivalent Ca(1), one Mg(1), two equivalent Mg(2), one Zn(3), two equivalent Zn(2), and three equivalent Zn(1) atoms. The Zn(1)-Zn(3) bond length is 3.00 Å. Both Zn(1)-Zn(2) bond lengths are 2.93 Å. There are two shorter (2.99 Å) and one longer (3.02 Å) Zn(1)-Zn(1) bond length. In the second Zn site, Zn(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Ca(1), two equivalent Mg(2), two equivalent Zn(3), and four equivalent Zn(1) atoms. Both Zn(2)-Zn(3) bond lengths are 2.73 Å. In the third Zn site, Zn(3) is bonded in a 12-coordinate geometry to three equivalent Ca(1), three equivalent Mg(2), three equivalent Zn(1), and three equivalent Zn(2) atoms.