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Isolation and X‑ray Crystal Structures of Triarylphosphine Radical Cations
Abstract
Salts containing triarylphosphine radical cations <b>1</b><sup><b>•+</b></sup> and <b>2</b><sup><b>•+</b></sup> have been isolated and characterized by electron paramagnetic resonance (EPR) and UV–vis absorption spectroscopy as well as single-crystal X-ray diffraction. Radical <b>1</b><sup><b>•+</b></sup> exhibits a relaxed pyramidal geometry, while radical <b>2</b><sup><b>•+</b></sup> becomes fully planar. EPR studies and theoretical calculations showed that the introduction of bulky aryl groups leads to enhanced p character of the singly occupied molecular orbital, and the radicals become less pyramidalized or fully flattened- Dataset
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- exhibit
- calculation
- radical
- cation
- triarylphosphine
- EPR studies
- Structures
- introduction
- absorption
- aryl groups
- p character
- Triarylphosphine Radical CationsSalts
- pyramidalized
- Isolation
- Crystal
- electron
- UV
- diffraction
- spectroscopy
- resonance