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SbRu is Modderite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ru3+ is bonded to six equivalent Sb3- atoms to form a mixture of face, edge, and corner-sharing RuSb6 octahedra. The corner-sharing octahedra tilt angles range from 45–57°. There are a spread of Ru–Sb bond distances ranging from 2.64–2.74 Å. Sb3- is bonded in a 6-coordinate geometry to six equivalent Ru3+ atoms.
Sr(RuSb)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded in a body-centered cubic geometry to eight equivalent Sb3- atoms. All Sr–Sb bond lengths are 3.54 Å. Ru2+ is bonded to four equivalent Sb3- atoms to form a mixture of edge and corner-sharing RuSb4 tetrahedra. All Ru–Sb bond lengths are 2.60 Å. Sb3- is bonded in a 9-coordinate geometry to four equivalent Sr2+, four equivalent Ru2+, and one Sb3- atom. The Sb–Sb bond length is 3.12 Å.
Ba(RuSb)2 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent Sb3- atoms. All Ba–Sb bond lengths are 3.64 Å. Ru2+ is bonded to four equivalent Sb3- atoms to form a mixture of edge and corner-sharing RuSb4 tetrahedra. All Ru–Sb bond lengths are 2.60 Å. Sb3- is bonded in a 8-coordinate geometry to four equivalent Ba2+ and four equivalent Ru2+ atoms.