| 铁硫原子簇配合物(μ-CH3S)(μ-C5H9O2S)Fe2(CO)6的合成和晶体及分子结构 |
| SYNTHESIS AND CRYSTAL STRUCTURE OF Fe-S CLUSTER COMPLEX(μ-CH3S)(μ-C5H8O2S)Fe2(CO)6 |
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| 摘要: 在一系列铁硫原子簇配合物(μ-R1S)(μ-R2S)Fe2(CO)6中,我们研究了不同的R1和R2基团对这类配合物结构的影响规律.本文合成了标题配合物,测定了它的晶体和分子结构,并与其他这类配合物的结构做了比较. |
| 关键词: 铁硫簇合物 晶体和分子结构 |
| 基金项目: |
| Abstract: The effects of different substituents R1 and R2 on the structures of the kind of(μ-R1S)(μ-R2S)Fe2(CO)8 cluster complexes are significant. The title complex has been synthesized by the reaction of μ-S2Fe2(CO)6 with CH3MgI and ethyl acrylate in THF at -78℃. The title complex belongs to triclinic system, space group Pi, with unit cell parameters: a=7.944(0), b=8.165(3), c=14.890(1)Å, α=82.37(2), β=77.99(6), γ=71.25(1)deg., Z=2 and Dcalc=1.712 g/cm3, The coordinates of two Fe atoms were obtained by an analysis of a Patterson function. The final deviation factor R=0.023, Rw=0.028. It was shown that the four Fe-S bond lengths in the cluster skeleton are almost the same. The average length of the four Fe-S bonds and the Fe-Fe bond length of the title complex are shorter than the relevant bond lengths of(μ-cy-C6H11S)(μ-n-C5H11S)Fe2(CO)5PPh3[1] and(μ-i-C3H7S)(μ-cy-C6H5CH2S)Fe2(CO)4(PPh3)2 respectively. Therefore the volume of group bonded to Fe atom of cluster skeleton is able to influence the Fe-S and Fe-Fe bond lengths of the cluster skeleton. The substituent -CH3 is attached to S1 atom in the conformable with an e-type bond, whereas the sustituent-(C5H8O2)is attached to S2 atom with an axial bond. Presumably this sort of conformation is favourable to decreasing of the steric repelling effect or to packing of the mo-lecula in unit cell. Besides, these two substituents are not bent towards any one of the two Fe atoms, but are perpendicular to the Fe-Fe bond roughly. This is obviously due to that the two Fe atoms have the same bonding environment. |
| Keywords: Fe-S cluster compound crystal molecular structure |
| 投稿时间：1986-07-03 |
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| 王宏根,姚心侃,宋礼成,胡青眉.铁硫原子簇配合物(μ-CH3S)(μ-C5H9O2S)Fe2(CO)6的合成和晶体及分子结构[J].无机化学学报,1987,3(4):28-34. |
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