KOsNO2Br4 crystallizes in the orthorhombic Cmc2_1 space group. K(1) is bonded in a 10-coordinate geometry to one N(1), one O(1), two equivalent O(2), two equivalent Br(1), and four equivalent Br(2) atoms. Os(1) is bonded in a 6-coordinate geometry to one N(1), one O(1), two equivalent Br(1), and two equivalent Br(2) atoms. N(1) is bonded in a distorted single-bond geometry to one K(1) and one Os(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one K(1) and one Os(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent K(1) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted water-like geometry to one K(1) and one Os(1) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Os(1) atom.
KOsNO2Br4 crystallizes in the orthorhombic Cmc2_1 space group. K(1) is bonded in a 10-coordinate geometry to one N(1), one O(1), two equivalent O(2), two equivalent Br(1), and four equivalent Br(2) atoms. The K(1)-N(1) bond length is 3.18 Å. The K(1)-O(1) bond length is 2.81 Å. There is one shorter (2.87 Å) and one longer (2.91 Å) K(1)-O(2) bond length. Both K(1)-Br(1) bond lengths are 3.50 Å. There are two shorter (3.52 Å) and two longer (3.66 Å) K(1)-Br(2) bond lengths. Os(1) is bonded in a 6-coordinate geometry to one N(1), one O(1), two equivalent Br(1), and two equivalent Br(2) atoms. The Os(1)-N(1) bond length is 1.69 Å. The Os(1)-O(1) bond length is 2.06 Å. Both Os(1)-Br(1) bond lengths are 2.47 Å. Both Os(1)-Br(2) bond lengths are 2.54 Å. N(1) is bonded in a distorted single-bond geometry to one K(1) and one Os(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one K(1) and one Os(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent K(1) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted water-like geometry to one K(1) and one Os(1) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Os(1) atom.