KCo2In9 crystallizes in the hexagonal P6/mmm space group. K(1) is bonded to twelve equivalent In(1) atoms to form face-sharing KIn12 cuboctahedra. Co(1) is bonded in a 9-coordinate geometry to three equivalent In(2) and six equivalent In(1) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 12-coordinate geometry to two equivalent K(1), two equivalent Co(1), four equivalent In(1), and four equivalent In(2) atoms. In the second In site, In(2) is bonded in a linear geometry to two equivalent Co(1) and eight equivalent In(1) atoms.
KCo2In9 crystallizes in the hexagonal P6/mmm space group. K(1) is bonded to twelve equivalent In(1) atoms to form face-sharing KIn12 cuboctahedra. All K(1)-In(1) bond lengths are 3.83 Å. Co(1) is bonded in a 9-coordinate geometry to three equivalent In(2) and six equivalent In(1) atoms. All Co(1)-In(2) bond lengths are 2.53 Å. All Co(1)-In(1) bond lengths are 2.83 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 12-coordinate geometry to two equivalent K(1), two equivalent Co(1), four equivalent In(1), and four equivalent In(2) atoms. There are two shorter (3.18 Å) and two longer (3.24 Å) In(1)-In(1) bond lengths. All In(1)-In(2) bond lengths are 3.11 Å. In the second In site, In(2) is bonded in a linear geometry to two equivalent Co(1) and eight equivalent In(1) atoms.