Study of the electron-transfer chain catalysis reactions between FpI and phosphines

• Main Authors: Peng Chen, 彭震
• Other Authors: Liu Ling-Kang
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/89120254732891047901

博士 === 國立臺灣大學 === 化學研究所 === 87 === The preparation of [Fp2(m-dppe)][PF6]2 was achieved starting from 2:1 FpI / dppe in THF at low temperature employing the 17-19 e pathway. In the solid state the conformations for the [Fp2(m-dppe)]2+ dication as PF6- salt and as BPh4- salt are different. In the former the two Fe centers are syn with respect to the loosely defined plane of P-C-C-P skeleton whereas in the latter the Fe-P-C-C-P-Fe skeleton is all trans in conformation. The mixture of 1:1 [Fp2(m-dppe)][PF6]2 / dppe in CH3CN could be made to redistribute towards 2 equiv [CpFe(CO)2(h1-dppe)][PF6] with the radical mechanism, whereby a second- stage unimolecular CO dissociation follows and results in the quantitative production of [CpFe(CO)(h2-dppe)][PF6].