Synthese, struktur und reaktivität der ferriophosphonium-salze [CpFe(CO)(L)(PPh2CH2R′)]BF4 (L CO, CH3CN, Pn Bu3; R′ Ph, CN, COOEt, PPh2, SiMe3); Kristallstrukturen von [CpFe(CO)2PPh2CH2SiMe3]BF4 und [CpFe(PPh2CH2Ph)CpFe(CO)](η-CO)2
作者:Christian Klasen、Ingo-Peter Lorenz、Siegbert Schmid、Georg Beuter
DOI:10.1016/0022-328x(92)83099-4
日期:1992.5
aquo complex [CpFe(CO)2(H2O)]BF4, which is obtained from the dimer [CpFe(CO)2]2, gives functionalized alkylphosphine ligand complexes of the type [CPFe(CO)2PPh2CH2R′]BF4 (R′ Ph, CN, SiMe3, COOEt, PPh2) (1a–e) in high yields. The tri-n-butylphosphine complex [CpFe(CO)2 (PnBu3)]BF4 (1f) is prepared analogously. The green, neutral, dimeric monophosphine complex [CpFe(PPh2CH2Ph)CpFe(CO)](μ-CO)2 (3) is
从二聚体[CpFe(CO)2 ] 2获得的水合络合物[CpFe(CO)2(H 2 O)] BF 4的化学计量添加膦PPh 2 CH 2 R' ,得到官能化的烷基膦配体络合物类型[CPFe(CO)2 PPh 2 CH 2 R'] BF 4(R'Ph,CN,SiMe 3,COOEt,PPh 2)(1a–e)高收率。三正丁基膦配合物[CpFe(CO)2(PnBu 3)] BF 4(1f)的准备类似。绿色,中性,二聚单膦配合物[CpFe的量(PPH 2 CH 2 PH)CpFe的量(CO)](μ-CO)2(3)通过的反应形成1A用OH - 。在CO的直接取代1A-F由第二膦配体不得到纯产物除了1F,这给4中OH的存在下-及在对比的基础反应。但是,可以使用在α位活化的烷基膦配体制备[CpFe(CO)(P n Bu 3)(PPh 2 CH 2 CN)] BF 4(6)定量地,通过将CH 3 CN