1422965-12-5Relevant academic research and scientific papers
Isolation and X-ray crystal structures of triarylphosphine radical cations
Pan, Xiaobo,Chen, Xiaoyu,Li, Tao,Li, Yizhi,Wang, Xinping
, p. 3414 - 3417 (2013)
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.
