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The dichlorides of bis(cyclopentadienyl) or bis(methylcyclopentadienyl) titanium, zircon-ium and hafnium reacting with phenol or substituted phenols in the presence of base give aseries of new aryloxymetal derivatives. The activities of chlorine atoms in the dichlorides ofbis(cyclopentadienyl)titanium, zirconium and hafnium molecules towards phenols are compared.The influence upon HNMR of the cyclopentadienyl ring due to the electronegativities of themetals and the substituents on the phenyl rings, as well as the number and position of thesubstituents are discussed.
The dichlorides of bis (cyclopentadienyl) or bis (methylcyclopentadienyl) titanium, zircon-ium and hafnium reacting with phenol or substituted phenols in the presence of base give a series of new aryloxymetal derivatives. The activities of chlorine atoms in the dichlorides of bis (cyclopentadienyl) titanium , zirconium and hafnium molecules towards phenols are compared. The influence upon HNMR of the cyclopentadienyl ring due to the electronegativities of theme and the substituents on the phenyl rings, as well as the number and position of the substrate reagents are discussed.