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cybusun

金虫 (小有名气)

[求助] 化学英文文献段落翻译

本人英文水平有限,望哪位高手翻译下次段落,谢谢!
The interaction between the metal cation and the axial ligand affects the magnetic
behavior of the Fe(II) and Mn(II) complexes of hemiporphyrazine(半紫菜嗪). There are reports on
the relationship between the position of metal cation in relation to the macrocycle plane
and the spin state of the related porphyrin and phthalocyanine macrocycles.All
evidence indicates that if the metal cation lies in the macrocycle plane, the spin state of
metal cation is intermediate while it will have high spin state if the metal cation lies out
of the ring plane. In the case of Fe(II) and Mn(II)hp complexes, they exhibit high spin
ground states (S = 2, S = 5/2). This suggests that the interaction of molecules such as H2O
or HCl pulls the Fe(II) and Mn(II) metal cations away from the hemiporphyrazine plane.
However, there are many additional factors have been considered in order to determine
the magnetic behavior of metal complexes, including weaker ligand fields and lower
symmetries of the macrocycles. The conversion from the high to low spin state in Fe(II)
and Mn(II) complexes of hemiporphyrazine can be observed in their IR spectra.
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wxb0626

木虫 (正式写手)

【答案】应助回帖

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cybusun(金币+15, 翻译EPI+1): ★★★★★最佳答案 2012-03-12 11:01:25
金属阳离子和轴向配体之间的相互作用影响着半紫菜嗪中Fe(Ⅱ)和Mn(Ⅱ)配合物的磁行为。有研究报道了金属阳离子相对于大环平面的位置与卟啉及酞菁大环自旋态之间的关系。所有证据表明,如果金属阳离子位于大环平面,其自旋态居中,若金属阳离子位于环平面以外,将拥有高自旋态。就Fe(Ⅱ)和Mn(Ⅱ)配合物而言,他们表现出高自旋基态(S=2, S=5/2)。这表明,分子(如H2O或HCl)之间的相互作用拖拽Fe(Ⅱ)和Mn(Ⅱ)金属阳离子远离半紫菜嗪平面。不过,为了确定金属配合物的磁行为,也需要考虑许多其他因素,包括较弱的配位场和大环较低的对称性。可从红外光谱中观察到半紫菜嗪中Fe(Ⅱ)和Mn(Ⅱ)配合物从高自旋态向低自旋态的转变。
2楼2012-03-11 13:22:25
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