Structural and Electronic Effects of Pentafluorophenyl Substituents on Cyclopentadienyl Complexes of Fe, Co, Mn, and Re<sup>1</sup>
作者:Matthew P. Thornberry、Carla Slebodnick、Paul A. Deck、Frank R. Fronczek
DOI:10.1021/om000798v
日期:2000.12.1
in D2SO4; efforts to isolate 18−20 as hexafluorophosphates failed. Reactions of the ligands 5−8 with M(CO)5Br (M = Mn, Re) afforded the piano stool complexes (ArCp)Mn(CO)3 (21), (1,3-Ar2Cp)Mn(CO)3 (22), (1,2,4-Ar3C5H2)M(CO)3 (23, M = Mn; 27, M = Re), and (1,2,3-Ar3C5H2)M(CO)3 (24, M = Mn; 28, M = Re). Both the voltammetric oxidation potentials (E1/2) of the substituted metallocenes 9−16 and the carbonyl
CpNa(Cp = C 5 H 5)与C 6 F 6(二甘醇二甲醚,110°C,14 h)反应生成了一种产物混合物,其中有两种新的三芳基环戊二烯1,2,4-Ar 3 C 5通过硅胶色谱法(Ar = C 6 F 5)分离出H 3(3)和1,2,3-Ar 3 C 5 H 3(4)。二烯3和4易于转化(NaH,THF)转化为相应的三芳基环戊二烯化钠(1,2,4-Ar 3 C 5 H2)Na(7)和(1,2,3-Ar 3 C 5 H 2)Na(8)。配体7和8与FeBr 2的反应得到二茂铁(1,2,4-Ar 3 C 5 H 2)2 Fe(11)和(1,2,3-Ar 3 C 5 H 2)2 Fe(12)。钴烯(ArC 5 H 4)2 Co(13),(1,3-Ar 2 C 5H 3)2 Co(14),(1,2,4-Ar 3 C 5 H 2)2 Co(15)和(1,2,3-Ar 3 C 5 H 2)2 Co(16)为分别由CoBr