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Reaction of π-isopentadienetricarbonyliron (1) with aryl lithium ArLi (Ar = phenyl,p-tolyl, p-methoxyphenyl, p-trifluoromethylphenyl) in ether at low temperature, and subsequentalkylation of the acylmetallate formed with trietbyloxonium tetrafluoroborate[(C_2H_6)_3OBF_4] in aqueoussolution at 0℃, gave orange-red crystalline complexes (2--5), the isomerized products of isopentadiene(dicarbonyl) [ethoxy(aryl)carbene] iron with composition of C_5H_8 (CO)_2FeC(OC_2H_5)Ar When LiC_6Cl_5was used as nucleophilic reagent in the reaction, on alkylation of the afforded acylmetallate inter-mediate under some reaction conditions, complex (CO)_4FeC(OC_2H_5)C_6Cl_5(6) was obtained. Themolecular structure of complexes 2 and 6 were determined by means of single crystal X-ray diffrac-tion measurements. IR, ~1H NMR and mass spectra of these complexes were investigated.
Reaction of π-isopentadienetricarbonyliron with aryl lithium ArLi (Ar = phenyl, p-tolyl, p-methoxyphenyl, p-trifluoromethylphenyl) in ether at low temperature, and subsequentalkylation of the acylmetallate formed with trietbyloxonium tetrafluoroborate [(C_2H_6) _3OBF_4] in aqueoussolution at 0 ° C, gave orange-red crystalline complexes (2--5), the isomerized products of isopentadiene (dicarbonyl) [ethoxy (aryl) carbene] iron with composition of C_5H_8 (CO) _2FeC (OC_2H_5) Ar When LiC_6Cl_5was used as nucleophilic reagent in the reaction, on alkylation of the afforded acylmetallate inter-mediate under some reaction conditions, complex (CO) _4FeC (OC_2H_5) C_6Cl_5 (6) was obtained. Themolecular structure of complexes 2 and 6 were determined by means of single crystal X-ray diffrac tion measurements. IR, ~ 1H NMR and mass spectra of these complexes were investigated.