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The Redox Chemistry of Mono‐ and Bis(acyl)phosphane Oxides
Author(s) -
Zalibera Michal,
Stébé PierreNicolas,
Dietliker Kurt,
Grützmacher Hansjörg,
Spichty Martin,
Gescheidt Georg
Publication year - 2014
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201301214
Subject(s) - chemistry , redox , delocalized electron , electron paramagnetic resonance , molecule , photochemistry , radical ion , radical , ion , spectroscopy , polymer chemistry , organic chemistry , physics , nuclear magnetic resonance , quantum mechanics
Mono‐ and bis(acyl)phosphane oxides are usually utilized as photoinitiators for radical polymerizations. This manuscript reveals the electrochemically reversible reductions of these molecules, leading to the corresponding radical anions. The radical anions, which have been characterized by EPR and ENDOR spectroscopy, display remarkable delocalization and ion‐pairing behavior that can be rationalized by theoretical calculations.