174540-99-9Relevant academic research and scientific papers
Formation of (μμ-RE)(μ-S-)Fe2(CO)6 and (μ-RE)(μ-Se-)Fe2(CO)6 (E = S, Se) anions and a comparative study of their reactions with SO2Cl2, ClC(O)ZC(O)Cl (Z = (CH2)2, C6H4), or P-MeC6H4SO2Cl.
Song, Li-Cheng,Yan, Chao-Guo,Hu, Qing-Mei,Wang, Ru-Ji,Mak, Thomas C. W.,Huang, Xiao-Ying
, p. 1535 - 1544 (2008/10/08)
The CO-bridged anions [(μ-RE)(μ-CO)Fe2(CO)6]- reacted with S8 to form the sulfur-centered anions (μ-RE)(μ-S-)Fe2(CO)6 (4; E = S, Se), whereas reaction of the anions with Se8 yielded the selenium-centered anions (μ-RE)(μ-Se-)Fe2(CO)6 (6; E = S, Se). Interestingly, reaction of 4 with SO2Cl2 afforded the S - S-bonded clusters [(μ-RE)Fe2(CO)6]2(μ-S-S) (5), whereas reaction of 6 with SO2Cl2 produced the μ4-Se clusters [(μ-RE)Fe2(CO)6]2(μ4-Se) (8); clusters 8 could also be produced by the action of anions 6 on succinoyl chloride or p-phthaloyl chloride, while the μ4-8 clusters [(μ-RE)Fe2(CO6]2(μ4-S) (9) were generated by reaction of anions 4 with the above organic bis acid chlorides under similar conditions. Also, reaction of 4 (E = S) with p-MeC6H4SO2Cl gave the μ4-S clusters [(μ-RE)Fe2(CO)6]2(μ4-S) (9; E = S) and the expected Fe2S2 butterfly clusters (μ-RE)(μ-p-MeC6H4SO2S)Fe 2(CO)6 (10), whereas anion 6 reacted with p-MeC6H4SO2Cl to afford the unexpected S=O-bridged complexes (μ-RE)(μ-p-MeC6H4SO2)Fe 2(CO)6 (11) and μ4-Se clusters 8. Clusters 11 could be also prepared through direct reaction of the precursor of 6, i.e. [(μ-RE)(μ-CO)Fe2(CO)6]-, with p-MeC6H4SO2Cl. For some of these reactions the mechanisms were preliminarily proposed. The structures of 15 new cluster compounds have been characterized by C/H analysis and IR, 1H NMR, and MS spectroscopy; those of [(μ-EtS)Fe2(CO)6]2(μ4-Se) (8a) and (μ-EtS)(μ-p-MeC6H4SO2)Fe 2(CO)6 (11a) have been confirmed by X-ray diffraction analyses.
