Isolation and X‑ray Crystal Structures of Triarylphosphine Radical Cations
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https://figshare.com/articles/dataset/Isolation_and_X_ray_Crystal_Structures_of_Triarylphosphine_Radical_Cations/2437327
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Salts
containing triarylphosphine radical cations 1•+ and 2•+ have been isolated and characterized by electron paramagnetic
resonance (EPR) and UV–vis absorption spectroscopy as well
as single-crystal X-ray diffraction. Radical 1•+ exhibits a relaxed pyramidal geometry, while
radical 2•+ 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.
创建时间：
2016-02-19
