Citation: Song Li-Cheng, Liu Rong-Gang, Hu Qing-Mei, Wang Ji-Tao, Liu Xiao-Lan, Miao Fang-Ming. Studies on Nucleophilic Substitution Reaction of μ-Acyl Iron-Sulfur Complexes——Synthesis and Structures of Some PPh3-OR AsPh3-Substituted μ-Acyl Fe-S Complexes[J]. Acta Physico-Chimica Sinica, ;1990, 6(04): 449-455. doi: 10.3866/PKU.WHXB19900412
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Mono-PPh_3- or mono-AsPh_3-substituted derivatives (μ-ArCO) (μ-RS) Fe_2(CO)_5PPh_3(Ar=Ph, R=Et or B_u~t; Ar=p-ClC_6H_4, R=B_u~t) and (μ-ArCO) (μ-RS)Fe_2(CO)_5AsPh_3 (Ar=Ph, R=Et or B_u~t) have been synthesized through reaction of the corresponding μ-acyl complexes (μ-ArCO) (μ-RS)Fe_2(CO)_6 with PPh_3 in boiling benzene for 2 h or with AsPh_3 in the same solvent refluxing for 12 h. For these new substituted derivatives the structures were characterized by combustion analysis, IR and ~1H NMR spectros. Furthermore, the crystal structure of one representative of these new complexes (μ-p-ClC_6H_4CO)(μ-B~t_uS)Fe_2(CO)_5PPh_3 has been determined by an X-ray diffraction technique. The crystals belong to triclinic system with space group P1. The cell parameters are a=1.0536(2), b=1.1714(4), c=1.4841(8) nm; α=98.47(4), β=102.70(4), γ=105.78(3)°; V=1.6771 nm; Z=2; D_C=1.468 g·cm~(-3). Final deviation factor R=0.065.
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