Fine tuning of the properties of organically modified heteropolymetalates

Journal of the Brazilian Chemical Society

Bayle, J. P.¹  CREA, Arcueil Cedex, France¹  Université Paris-Sud, Orsay Cedex, France¹  Lafontaine, E.¹  Perez, F.¹  Judeinstein, P.¹ 

关键词: organically modified oxopolymetalates;    redox properties;    183W NMR spectroscopy;   

DOI  :  10.1590/S0103-50531997000100015

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

"Keggin-type" organically modified oxopolymetalates of formula [R]4[SiW11O40(SiR')2], (R=Bu4N+, R' = -C2H5, -C10H21, -CH=CH2, -CH2CH=CH2, -OH, -C6H5, -C10H7, -C6H4NH2 (o, p), -C6H4NMe2 (p), -C6H4CH=CH2, -C6H4CF3, -C6H4CH=CHC6H5) were synthesized. The oxide core presented reversible redox properties which were tuned by the choice of the organic modifier. Parallel variations of the 183W NMR chemical shifts were measured and both effects might be related to the electronic donor-acceptor properties of the organic radical. The magnitudes of these effects are compared with those coming from the electrolyte itself.

【 授权许可】

Unknown