A kinetic study of the cleavage of the ironcarbon σ bond in η5-C5H5Fe(CO)2R by halogenated acetic acids
作者:Nancy De Luca、Andrew Wojcicki
DOI:10.1016/s0022-328x(00)90296-1
日期:1980.7
The rates of the reaction of η5-C5H5Fe(CO)2R (R = alkyl and aryl) with CF3CO2H to give η5-C5H5Fe(CO)2OC(O)CF3 and RH wre investigated in organic solvents, mostly at 25°C, by infrared spectroscopic, manometric and volumetric techniques. When R = alkyl, the cleavage in CH2Cl2 is first order in η5-C5H5Fe(CO)2R and first order in the CF3CO2H monomer at acid concentrations ⪆0.1M, but first order in η5-C5H5Fe(CO)2R
η的反应速率5 -C 5 H ^ 5的Fe(CO)2 R(R =烷基和芳基)与CF 3 CO 2小时,得到η 5 -C 5 H ^ 5的Fe(CO)2 OC(O) CF 3和RH通过红外光谱法,测压法和体积法在有机溶剂中(主要在25°C下)进行了研究。当R =烷基,CH裂解2氯2是在η一阶5 -C 5 H ^ 5的Fe(CO)2 R和第一级在CF 3 CO 2在酸浓度ħ单体⪆0.1中号在η,但一阶5 -C 5 H ^ 5的Fe(CO)2在CF R和二阶3 CO 2在较低酸浓度ħmonemer。二级速率常数对R的依赖性遵循C 5 H 5 > CH 5 Si(CH 3)3(> 110)> CH 3(32)> nC 4 H 9(15)> C 2 H 5的顺序(11)> CH 2 C(CH 3)3(6.2)> CH 2CH 2 C 6 H 5(5.3)> CH(CH 3)C 6 H 5(〜1.2)⪆CH