The synthesis and 19F NMR spectra of some derivatives of (4-fluorophenyl)dimethyltin
作者:D.N. Kravtsov、B.A. Kvasov、T.S. Khazanova、E.I. Fedin
DOI:10.1016/s0022-328x(00)86548-1
日期:1973.11
A number of (4-fluorophenyl)dimethyltin compounds and their carbon analogues have been prepared, and the fluorine chemical shifts for these compounds relative to fluorobenzene as an internal standard have been determined in cyclohexane, chloroform and pyridine. It has been shown that the electron-accepting capacity of the Sn-(CH3)2X substituents (where X is a heteroatom) increases in chloroform solution
已经制备了许多(4-氟苯基)二甲基锡化合物及其碳类似物,并且已经在环己烷,氯仿和吡啶中测定了这些化合物相对于作为内标的氟苯的氟化学位移。已经表明,相对于环己烷中的值,Sn-(CH 3)2 X取代基(其中X是杂原子)的电子接受能力在氯仿溶液中增加,在吡啶溶液中减少,吡啶抑制了电子效应的传递通过锡原子。的之间的相关性19角˚F化学位移和σ 1和Σσ 0已经发现金属原子上基团的值,表明取代基和锡原子之间的电子相互作用本质上主要是感应性的。已显示Sn(CH 3)2和C(CH 3)2桥接基团传递这种电子效应的能力是相似的。