Zinc(II) Hexafluoroacetylacetonate Complexes of Alkoxyamines: NMR and Kinetic Investigations. First Step for a New Way to Prepare Hybrid Materials

被引：18
作者：
Audran, Gerard [1 ]
Bagryanskaya, Elena [2 ,3 ]
Bagryanskaya, Irina [2 ]
Edeleva, Mariya [2 ,3 ]
Marque, Sylvain R. A. [1 ,2 ]
Parkhomenko, Dmitriy [2 ]
Tretyakov, Evgeny [2 ]
Zhivetyeva, Svetlana [2 ]
机构：
[1] Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551,Ave Escadrille Normandie Niemen, F-13397 Marseille 20, France
[2] NN Vorozhtsov Novosibirsk Inst Organ Chem SB RAS, Pr Lavrentjeva 9, Novosibirsk 630090, Russia
[3] Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia
来源：
CHEMISTRYSELECT | 2017年 / 2卷 / 12期
基金：
俄罗斯科学基金会;
关键词：
activation; alkoxyamines; C-ON bond homolysis; rate enhancement; Zn(hfac)(2) complexes; ON BOND HOMOLYSIS; NITROXIDE-MEDIATED POLYMERIZATION; POLYMERS; QUATERNIZATION;
D O I：
10.1002/slct.201700678
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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, H-1 and P-31 NMR spectra show very different structures for each complexes in solid state and in solution depending on the diastereosiomers and on the regioisomers.
引用
收藏
页码：3584 / 3593
页数：10
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