WebThe world’s most abundantly manufactured plastic, polyethylene, consists of inert hydrocarbon chains. The introduction of reactive polar groups in these chains could help overcome problematic environmental persistence and enhance compatibility with other materials. We show that phosphinophenolate-coordinated nickel complexes can catalyze … WebJul 21, 2015 · The P,O-type phosphinophenol proligands (1·H, 2-PPh2-4-Me-6-Me-C6H2OH; 2·H, 2-PPh2-4-Me-6- (t)Bu-C6H2OH) readily react with one equiv. of ZnEt2 to afford in high yields the corresponding Zn (II)-ethyl dimers of the type [ (κ (2)-P,O)Zn-Et]2 (3 and 4) with two μ-OPh bridging oxygens connecting the two Zn (II) centers, as determined by X-ray …
P,O-Phosphinophenolate zinc(ii) species: synthesis, structure and …
WebThe addition of nickel catalysts in bulky phosphinophenolate ligands results in the formation of phosphinophenolate-coordinated nickel complexes. This complex promotes catalytic reaction associated with ethylene polymerization which occurs when the polyethylene contains approximately 1% CO. The resultant material comprises favorable low content ... WebMar 25, 2015 · The phosphines 1·H and 2·H were synthesized according to a literature procedure and their identity was confirmed by NMR analysis.11 In par- Chart 1 P,O-Phosphinophenolate ligands A and associated (P,O)Zn chelates B and C. Scheme 1 Synthesis of the phosphine-phenolate (P,O)-supported zinc (II) alkyl (3 and 4) and alkoxide … on screen button gui
Polyethylene materials with in-chain ketones from
WebFeb 11, 2024 · Get e-Alerts. Abstract. o-Phosphinophenolate and o-phosphinothiophenolate are potent photocatalysts with strong reducing ability to activate aryl chlorides and … WebDownloadable! Under visible light irradiation, o-phosphinophenolate functions as an easily accessible photoredox catalyst to activate trifluoromethyl groups in trifluoroacetamides, trifluoroacetates, and trifluoromethyl (hetero)arenes to deliver corresponding difluoromethyl radicals. It works in relay with a thiol hydrogen atom transfer (HAT) catalyst to enable … WebThe mass spectrometric characterization of a series of [ReOX(PY) 2] complexes containing bidentate phosphinoenolate and phosphinoamine ligands has been achieved by electron impact mass spectrometry and metastable ion studies.The data obtained showed a higher stability of the complexes bearing the phosphinoenolate ligand with respect to the … on screen background