13C nuclear magnetic resonance chemical shifts in styrenes; substituent and solvent effects
作者:Duncan A. R. Happer
DOI:10.1039/p29840001673
日期:——
The 13C n.m.r. chemical shifts of a series of meta- and para-X-substituted styrenes (X = H, NMe2, OMe, Me, F, Cl, Br, I, CF3, CO2Me, Ac, CN, NO2, NMe3+)have been determined in seven different solvents (75%EtOH-D2O,EtOH,Me2SO, Me2CO, CDCl3, CCl4, and C6H6). The data for the side-chain carbons and for the ring carbon para-to the substituent (C6) in the meta-series have been analysed and used as a basis
的13 C NMR一系列的化学位移元-和对位-X取代的苯乙烯(X = H,NME 2,OME中,Me,F,氯,溴,I,CF 3,CO 2 Me中,AC,CN,在7种不同的溶剂(75%EtOH-D 2 O,EtOH,Me 2 SO,Me 2 CO,CDCl 3,CCl 4和C 6 H 6)中测定了NO 2,NMe 3 +。为侧链的碳和用于环碳上的数据段-to取代基(C 6)的元-系列已被分析并用于作为评估对σ的溶剂的效果的基础上升,σ [R ö,σ [R BA,和σ - [R - 。