OsN3OClNO(Br)2 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of eight hydrogen bromide atoms, four nitroxyl molecules, and four OsN3OCl clusters. In each OsN3OCl cluster, Os(1) is bonded in a distorted tetrahedral geometry to one N(2), two equivalent N(3), and one O(2) atom. There are two inequivalent N sites. In the first N site, N(2) is bonded in a single-bond geometry to one Os(1) atom. In the second N site, N(3) is bonded in an L-shaped geometry to one Os(1) and one Cl(1) atom. O(2) is bonded in a single-bond geometry to one Os(1) atom. Cl(1) is bonded in an L-shaped geometry to two equivalent N(3) atoms.
OsN3OClNO(Br)2 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of eight hydrogen bromide atoms, four nitroxyl molecules, and four OsN3OCl clusters. In each OsN3OCl cluster, Os(1) is bonded in a distorted tetrahedral geometry to one N(2), two equivalent N(3), and one O(2) atom. The Os(1)-N(2) bond length is 1.74 Å. Both Os(1)-N(3) bond lengths are 1.91 Å. The Os(1)-O(2) bond length is 1.77 Å. There are two inequivalent N sites. In the first N site, N(2) is bonded in a single-bond geometry to one Os(1) atom. In the second N site, N(3) is bonded in an L-shaped geometry to one Os(1) and one Cl(1) atom. The N(3)-Cl(1) bond length is 1.79 Å. O(2) is bonded in a single-bond geometry to one Os(1) atom. Cl(1) is bonded in an L-shaped geometry to two equivalent N(3) atoms.