作者:David White、Peter Johnston、Ingrid A. Levendis、Joseph P. Michael、Neil J. Coville
DOI:10.1016/0020-1693(93)03679-5
日期:1994.1
cyclopentadienyl complexes, [(η5-C5H4Ar)Fe(CO)(L)I] (Ar Ph, pC6H4Me, p-C6H4tBu; LP(OMe)3, PMe2Ph, P(OiPr)3, P(O-o-tol)3, PPh3, P(CH2Ph)3) was also synthesised and characterised by IR and NMR spectroscopy. Again the parameter δ(H2–H5) was found to be invariant with change in the substituent on the cyclopentadienyl ring, suggesting that changes at a distance do not influence this steric measure. NOE different
配合物[(η5-C5H4Me)Fe(CO)(L)I](L = PPh3,P(p-C6H4Me)3,P(p-C6H4F)3)已合成并通过红外光谱和NMR表征。发现在甲基取代基旁的环戊二烯基环质子共振之间的化学位移分离差异Δ(H2-H5)对对膦配体取代基的变化是不变的,这表明该方法相对不受电子影响。一系列芳基取代的环戊二烯基络合物[[(η5-C5H4Ar)Fe(CO)(L)I](ArPh,pC6H4Me,p-C6H4tBu;LP(OMe)3,PMe2Ph,P(OiPr)3,还合成了P(Oo-tol)3,PPh3,P(CH2Ph)3),并通过IR和NMR光谱对其进行了表征。再次发现,δ(H2-H5)参数随环戊二烯基环上取代基的变化而不变,这表明远处的变化不会影响此空间测量。在[(η5-C5H4-p-C6H4Me)Fe(CO)(L)I](LP(OMe)3,P(OiPr)3)上记录的NOE不同