Selenium and tellurium derivatives of π-cyclopentadienylnickel tri-n-butylphosphine
作者:Masao Sato、Tadao Yoshida
DOI:10.1016/s0022-328x(00)93520-4
日期:1973.4
formula π-C5H5Ni[P(n-C4H9)3]SeC6H4X (I) (where X is H, p-CH3O, p-CH3, p-Cl, m-Cl, mCF3, and p-CH3CO) and π-C5H5Ni-[P(n-C4H9)3]TeC6H4X (II) (where X is H, p-CH3O, p-CH3, p-Cl, and m-CF3) have been prepared and their NMR spectra recorded. Good correlations exist between the 1H chemical shifts of the π-C5H5 group and the Hammett σ-constants of X for both (I) and (II). The Hammett ϱ values were found to be
通式的配合物π-C 5 H ^ 5的Ni [P(NC 4 H ^ 9)3 ]秒6 ħ 4 X(I)(其中X是H,p -CH 3 O,p -CH 3,p -Cl ,米-Cl,米CF 3,和p -CH 3 CO)和π-C 5 H ^ 5的Ni-[p(NC 4 H ^ 9)3 ] TEC 6 ħ 4 X(II)(其中X是H,p -CH 3已经制备了O,p- CH 3,p- Cl和m- CF 3),并记录了它们的NMR谱。良好的相关性的存在之间1的π-C h的化学位移5 ħ 5组两个(I)和X的哈米特σ常数和(II)。发现(I)和(II)的Hammett ϱ值分别为-18.7和-19.3(Hz /σ)。将这些值与类似的硫配合物获得的值进行比较。