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Issue 26, 2020
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Combined experimental and theoretical studies towards mutual osmium–bismuth donor/acceptor bonding

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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.

Graphical abstract: Combined experimental and theoretical studies towards mutual osmium–bismuth donor/acceptor bonding

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Supplementary files

Article information


Submitted
07 May 2020
Accepted
12 Jun 2020
First published
15 Jun 2020

Dalton Trans., 2020,49, 9024-9034
Article type
Paper

Combined experimental and theoretical studies towards mutual osmium–bismuth donor/acceptor bonding

J. Ramler, K. Radacki, J. Abbenseth and C. Lichtenberg, Dalton Trans., 2020, 49, 9024
DOI: 10.1039/D0DT01663B

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