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Zinc(II) Hexafluoroacetylacetonate Complexes of Alkoxyamines: NMR and Kinetic Investigations. First Step for a New Way to Prepare Hybrid Materials.
Author(s) -
Audran Gérard,
Bagryanskaya Elena,
Bagryanskaya Irina,
Edeleva Mariya,
Marque Sylvain R. A.,
Parkhomenko Dmitriy,
Tretyakov Evgeny,
Zhivetyeva Svetlana
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700678
Subject(s) - structural isomer , chemistry , moiety , phosphonate , homolysis , ligand (biochemistry) , pyridine , solid state , medicinal chemistry , stereochemistry , polymer chemistry , organic chemistry , radical , biochemistry , receptor
Abstract A series of Zn(hfac) 2 alkoxyamines (diethyl(2,2‐dimethyl‐1‐( tert ‐butyl‐(1‐pyridylethoxy)amino)propyl)phosphonate) coordinated at ortho , meta and para positions of their pyridyl moiety were prepared and their homolysis rate constants k d measured. Up to a 30‐fold increase in k d was observed for the meta ‐(Zn‐ RR / SS ) and para ‐(Zn‐ RR / SS ) regioisomers. Moreover, the activation is also controlled by the amount of pyridine, used as a ligand competitor. XRD, 1 H and 31 P NMR spectra show very different structures for each complexes in solid state and in solution depending on the diastereosiomers and on the regioisomers.