Oliver Puntigam, Daniela Förster, Nick A. Giffin, Sebastian Burck, Johannes Bender, Fabian Ehret, Arthur D. Hendsbee, Martin Nieger, Jason D. Masuda and Dietrich Gudat Rational Synthesis and Mutual Conversion of Bis-N-heterocyclic Diphosphanes and Secondary N-Heterocyclic Phosphanes European Journal of Inorganic Chemistry 2013
Version of Record online: 11 FEB 2013 | DOI: 10.1002/ejic.201201471
The sterically induced formation of phosphanyl radicals is the crucial step that determines if magnesium reduction of N-heterocyclic chlorophosphanes in the presence of Et3NHCl gives diphosphanes or proceeds all the way to yield secondary phosphanes. The latter can be converted back to diphosphanes upon exposure to light.
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