The EPR Spectrum of Triplet Mesitylphosphinidene: Reassignment and New Assignment. Issue 27 (31st May 2017)

• Record Type: Journal Article
• Authors: Akimov, Alexander V.; Ganushevich, Yulia S.; Korchagin, Denis V.; Miluykov, Vasili A.; Misochko, Eugenii Y.
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 27(2017)
• Page Start: 7944
• Page End: 7947
• Publication Date: 2017-05-31
• Subjects: EPR spectroscopy -- high-spin molecules -- phosphinidenes -- reactive intermediates -- triplet state; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201703629
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Low‐temperature UV‐photolysis of mesitylphosphiranes under highly anaerobic conditions leads to the formation of the triplet mesitylphosphinidene (MesP). The recorded X‐band EPR spectrum of triplet MesP and the derived zero‐field splitting parameter D =4.116 cm −1 differ significantly from those reported previously for this intermediate. New magnetic parameters of mesitylphosphinidene are discussed along with the results of DFT calculations. Abstract : Finally caught : The EPR spectrum of triplet mesitylphosphinidene and zero‐field splitting parameter D from this spectrum differ significantly from those previously reported in the literature. The presence of the doublet‐hyperfine structure in the EPR spectra provides reliable identification of the mesitylphosphinidene molecule in its triplet state.