6533b85cfe1ef96bd12bd58c
RESEARCH PRODUCT
Half-sandwich Mo(III) complexes with asymmetric diazadiene ligands
Titus A. JennyPhilippe RichardRinaldo PoliFrançois StoffelbachCorinne Savarysubject
Nitroxide mediated radical polymerizationRadical polymerizationHalf-sandwich complexesDiazadiene010402 general chemistry01 natural sciencesMedicinal chemistryStyreneInorganic Chemistrychemistry.chemical_compoundTacticityPolymer chemistryMaterials ChemistryMolecule[CHIM.COOR]Chemical Sciences/Coordination chemistryPhysical and Theoretical ChemistryPolystyreneAtom transfer radical polymerizationMolybdenum010405 organic chemistryLigandAtom-transfer radical-polymerization[CHIM.CATA]Chemical Sciences/Catalysis0104 chemical sciences[CHIM.POLY]Chemical Sciences/PolymerschemistryPolystyrenedescription
The asymmetric 1,4-diazadiene ligands R ∗ N CHCH NR ∗ [R ∗ = ( S )-CH(CH 3 )Ph], R 2 ∗ dad , and 2,2′-bis(4-ethyloxazoline), as-ox, have been used to generate half-sandwich Mo III derivatives by addition to Cp 2 Mo 2 Cl 4 . Ligand R 2 ∗ dad affords a mononuclear, paramagnetic 17-electron product, CpMoCl 2 ( R 2 ∗ dad ) , whereas as-ox leads to the isolation of a dinuclear compound where only one molecule of ligand has been added per two Mo atoms, Cp 2 Mo 2 Cl 4 (as-ox). In the presence of free as-ox, this compound coexists with the paramagnetic mononuclear complex in solution. Both products are capable of controlling the radical polymerization of styrene under typical atom transfer radical polymerization (ATRP) conditions. However, the tacticity of the resulting polystyrene does not differ from that given by conventional free radical polymerization.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-11-01 | Inorganica Chimica Acta |