1,3,2-Diheterophospholane complexes: access to new tuneable precursors of phosphanoxyl complexes and P-functional polymers
Synthesis of a testbed of P-H functional diheterophospholane complexes ( 3 and 6a,b ) with no or little steric bulk at the α-position was achieved using [NEt 4 ][WH(CO) 5 ] as a combined reductant and complexation reagent. Reaction with TEMPO leads to P-OTEMP substituted tungsten complexes ( 4 and 7...
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Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2022-03, Vol.51 (11), p.44-445 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Synthesis of a testbed of P-H functional diheterophospholane complexes (
3
and
6a,b
) with no or little steric bulk at the α-position was achieved using [NEt
4
][WH(CO)
5
] as a combined reductant and complexation reagent. Reaction with TEMPO leads to P-OTEMP substituted tungsten complexes (
4
and
7a,b
) possessing different thermostabilities towards N-O bond cleavage. The transient phosphanoxyl complexes obtained were used for the polymerisation of styrene and acrylonitrile. DFT calculations were performed on the formation of various open-shell complexes and Loewdin spin density distributions.
P-OTEMP 1,3,2-heterophospholane tungsten complexes with different thermal stabilities were used to generate transient phosphanoxyl complexes which allow for a first-time radical polymerisation of acrylonitrile based on this methodology. |
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ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d2dt00027j |