K6InAs3 crystallizes in the triclinic P-1 space group. There are twelve inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one As(2), one As(3), one As(5), and one As(6) atom. In the second K site, K(2) is bonded in a 4-coordinate geometry to one As(1), one As(3), one As(4), and one As(5) atom. In the third K site, K(3) is bonded in a 5-coordinate geometry to one In(2), one As(1), one As(2), one As(3), and one As(4) atom. In the fourth K site, K(4) is bonded in a 4-coordinate geometry to one As(2), one As(4), one As(5), and one As(6) atom. In the fifth K site, K(5) is bonded to one As(2), one As(6), and two equivalent As(5) atoms to form distorted edge-sharing KAs4 tetrahedra. In the sixth K site, K(6) is bonded in a 5-coordinate geometry to one In(1), one As(1), one As(2), one As(5), and one As(6) atom. In the seventh K site, K(7) is bonded in a 6-coordinate geometry to two equivalent In(1), one As(5), one As(6), and two equivalent As(2) atoms. In the eighth K site, K(8) is bonded to one As(1), one As(4), and two equivalent As(3) atoms to form distorted edge-sharing KAs4 tetrahedra. In the ninth K site, K(9) is bonded in a 6-coordinate geometry to two equivalent In(2), one As(1), one As(3), and two equivalent As(4) atoms. In the tenth K site, K(10) is bonded in a 4-coordinate geometry to one As(1), one As(3), one As(4), and one As(6) atom. In the eleventh K site, K(11) is bonded in a distorted trigonal planar geometry to one As(1), one As(3), and one As(4) atom. In the twelfth K site, K(12) is bonded in a distorted trigonal planar geometry to one As(2), one As(5), and two equivalent As(6) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a distorted trigonal planar geometry to one K(6), two equivalent K(7), one As(2), one As(5), and one As(6) atom. In the second In site, In(2) is bonded in a distorted trigonal planar geometry to one K(3), two equivalent K(9), one As(1), one As(3), and one As(4) atom. There are six inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to one K(10), one K(11), one K(2), one K(3), one K(6), one K(8), one K(9), and one In(2) atom. In the second As site, As(2) is bonded in a 9-coordinate geometry to one K(1), one K(12), one K(3), one K(4), one K(5), one K(6), two equivalent K(7), and one In(1) atom. In the third As site, As(3) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(11), one K(2), one K(3), one K(9), two equivalent K(8), and one In(2) atom. In the fourth As site, As(4) is bonded in a 9-coordinate geometry to one K(10), one K(11), one K(2), one K(3), one K(4), one K(8), two equivalent K(9), and one In(2) atom. In the fifth As site, As(5) is bonded in a 9-coordinate geometry to one K(1), one K(12), one K(2), one K(4), one K(6), one K(7), two equivalent K(5), and one In(1) atom. In the sixth As site, As(6) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(4), one K(5), one K(6), one K(7), two equivalent K(12), and one In(1) atom.
K6InAs3 crystallizes in the triclinic P-1 space group. There are twelve inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one As(2), one As(3), one As(5), and one As(6) atom. The K(1)-As(2) bond length is 3.32 Å. The K(1)-As(3) bond length is 3.60 Å. The K(1)-As(5) bond length is 3.48 Å. The K(1)-As(6) bond length is 3.39 Å. In the second K site, K(2) is bonded in a 4-coordinate geometry to one As(1), one As(3), one As(4), and one As(5) atom. The K(2)-As(1) bond length is 3.35 Å. The K(2)-As(3) bond length is 3.42 Å. The K(2)-As(4) bond length is 3.41 Å. The K(2)-As(5) bond length is 3.61 Å. In the third K site, K(3) is bonded in a 5-coordinate geometry to one In(2), one As(1), one As(2), one As(3), and one As(4) atom. The K(3)-In(2) bond length is 3.61 Å. The K(3)-As(1) bond length is 3.55 Å. The K(3)-As(2) bond length is 3.40 Å. The K(3)-As(3) bond length is 3.45 Å. The K(3)-As(4) bond length is 3.43 Å. In the fourth K site, K(4) is bonded in a 4-coordinate geometry to one As(2), one As(4), one As(5), and one As(6) atom. The K(4)-As(2) bond length is 3.42 Å. The K(4)-As(4) bond length is 3.44 Å. The K(4)-As(5) bond length is 3.34 Å. The K(4)-As(6) bond length is 3.33 Å. In the fifth K site, K(5) is bonded to one As(2), one As(6), and two equivalent As(5) atoms to form distorted edge-sharing KAs4 tetrahedra. The K(5)-As(2) bond length is 3.32 Å. The K(5)-As(6) bond length is 3.36 Å. There is one shorter (3.51 Å) and one longer (3.59 Å) K(5)-As(5) bond length. In the sixth K site, K(6) is bonded in a 5-coordinate geometry to one In(1), one As(1), one As(2), one As(5), and one As(6) atom. The K(6)-In(1) bond length is 3.60 Å. The K(6)-As(1) bond length is 3.56 Å. The K(6)-As(2) bond length is 3.46 Å. The K(6)-As(5) bond length is 3.47 Å. The K(6)-As(6) bond length is 3.51 Å. In the seventh K site, K(7) is bonded in a 6-coordinate geometry to two equivalent In(1), one As(5), one As(6), and two equivalent As(2) atoms. There is one shorter (3.54 Å) and one longer (3.56 Å) K(7)-In(1) bond length. The K(7)-As(5) bond length is 3.56 Å. The K(7)-As(6) bond length is 3.70 Å. There is one shorter (3.42 Å) and one longer (3.45 Å) K(7)-As(2) bond length. In the eighth K site, K(8) is bonded to one As(1), one As(4), and two equivalent As(3) atoms to form distorted edge-sharing KAs4 tetrahedra. The K(8)-As(1) bond length is 3.36 Å. The K(8)-As(4) bond length is 3.36 Å. There is one shorter (3.48 Å) and one longer (3.59 Å) K(8)-As(3) bond length. In the ninth K site, K(9) is bonded in a 6-coordinate geometry to two equivalent In(2), one As(1), one As(3), and two equivalent As(4) atoms. There is one shorter (3.54 Å) and one longer (3.57 Å) K(9)-In(2) bond length. The K(9)-As(1) bond length is 3.70 Å. The K(9)-As(3) bond length is 3.57 Å. There is one shorter (3.39 Å) and one longer (3.45 Å) K(9)-As(4) bond length. In the tenth K site, K(10) is bonded in a 4-coordinate geometry to one As(1), one As(3), one As(4), and one As(6) atom. The K(10)-As(1) bond length is 3.33 Å. The K(10)-As(3) bond length is 3.45 Å. The K(10)-As(4) bond length is 3.31 Å. The K(10)-As(6) bond length is 3.59 Å. In the eleventh K site, K(11) is bonded in a distorted trigonal planar geometry to one As(1), one As(3), and one As(4) atom. The K(11)-As(1) bond length is 3.40 Å. The K(11)-As(3) bond length is 3.42 Å. The K(11)-As(4) bond length is 3.42 Å. In the twelfth K site, K(12) is bonded in a distorted trigonal planar geometry to one As(2), one As(5), and two equivalent As(6) atoms. The K(12)-As(2) bond length is 3.47 Å. The K(12)-As(5) bond length is 3.43 Å. There is one shorter (3.38 Å) and one longer (3.95 Å) K(12)-As(6) bond length. There are two inequivalent In sites. In the first In site, In(1) is bonded in a distorted trigonal planar geometry to one K(6), two equivalent K(7), one As(2), one As(5), and one As(6) atom. The In(1)-As(2) bond length is 2.66 Å. The In(1)-As(5) bond length is 2.63 Å. The In(1)-As(6) bond length is 2.64 Å. In the second In site, In(2) is bonded in a distorted trigonal planar geometry to one K(3), two equivalent K(9), one As(1), one As(3), and one As(4) atom. The In(2)-As(1) bond length is 2.63 Å. The In(2)-As(3) bond length is 2.64 Å. The In(2)-As(4) bond length is 2.65 Å. There are six inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to one K(10), one K(11), one K(2), one K(3), one K(6), one K(8), one K(9), and one In(2) atom. In the second As site, As(2) is bonded in a 9-coordinate geometry to one K(1), one K(12), one K(3), one K(4), one K(5), one K(6), two equivalent K(7), and one In(1) atom. In the third As site, As(3) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(11), one K(2), one K(3), one K(9), two equivalent K(8), and one In(2) atom. In the fourth As site, As(4) is bonded in a 9-coordinate geometry to one K(10), one K(11), one K(2), one K(3), one K(4), one K(8), two equivalent K(9), and one In(2) atom. In the fifth As site, As(5) is bonded in a 9-coordinate geometry to one K(1), one K(12), one K(2), one K(4), one K(6), one K(7), two equivalent K(5), and one In(1) atom. In the sixth As site, As(6) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(4), one K(5), one K(6), one K(7), two equivalent K(12), and one In(1) atom.