Magnetism and 3D Electron Diffraction Solution of Hydrated Rubidium–Ruthenium Oxide Rb 2 Ru 2 O 7 ·H 2 O
Year: 2026
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide The crystal structure of Rb 2 Ru 2 O 7 ·H 2 O was determined by three-dimensional electron diffraction from the individual crystallites of a solid-state powder product. Rb 2 Ru 2 O 7 ·H 2 O crystallizes in space group C 2/ c ( a = 7.841(3) Å, b = 12.500(3) Å, c = 8.392(2) Å, β = 93.57(4)°, Z = 4). The structure contains infinite chains that run normal to the (101) plane and consist of alternating RuO 6 octahedra and square-pyramidal RuO 5 units connected via shared O–O edges. Magnetic properties were measured on the bulk powder, showing a diamagnetic baseline from 300 K to 60 K with a small Curie tail below 55 K. The magnetic moment, calculated from the 1.8 K isotherm, saturates at M = 4.4 × 10 –3 μ B Ru –1, much less than would be expected for S = 1 ruthenium. Bond-valence-sum analysis indicates high-valent Ru, and the near-diamagnetic response is consistent with the edge-sharing Ru–Ru motif, where weak direct Ru–Ru overlap yields a local singlet.
Source: Inorganic Chemistry
Institutions: University of Bristol, University of Warwick
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: CRYSTALLOGRAPHY AND FUNCTIONAL EVOLUTION OF ATOMICALLY THIN CONFINED NANOWIRES, A National Electron Diffraction Facility for Nanomaterial Structural Studies, G504327055, G5558554490, G708391930, Sir Henry Royce Institute - Cambridge Equipment, A National Electron Diffraction Facility for Nanomaterial Structural Studies, Sir Henry Royce InsStitute - recurrent grant
OpenAlex ID: W7130339544