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Updated: Dec 17, 2025

Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
Combined experimental and theoretical studies towards mutual osmium-bismuth donor/acceptor bonding
Jacqueline Ramler1, Krzysztof Radacki, Josh Abbenseth
1Department of Inorganic Chemistry, Julius-Maximilians-University Würzburg, Am Hubland, 97074 Würzburg, Germany. crispin.lichtenberg@uni-wuerzburg.de.
Abstract:
Osmium(ii) PNP pincer complexes bearing a hemilabile pyridyl-pyrazolide (PyrPz) ligand have been synthesised, and their reactivity towards Lewis acidic bismuth compounds has been examined. Reactions with BiCl3 resulted in chlorine-atom-transfer to give an osmium(iii) species. Reactions with cationic bismuth species led to adduct formation through N → Bi bond formation via the PyrPz ligand. Theoretical analyses revealed that steric interactions hamper Os → Bi bond formation and indicate that such interactions are possible upon reducing the steric profile around the osmium atom. Analytical techniques include NMR, IR, and EPR spectroscopy, cyclic voltammetry, elemental analysis and DFT calculations.
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