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~(15)N Shieldig of the Nitrosyl Ligand in Co(NO)(TPP)

机译:〜(15)N亚硝基配体在Co(NO)(TPP)中的Shieldig

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摘要

Using the density functional theory-individual gauge for localized orbitals (DFT-IGLO) method, the ~N shielding for a nitrosyl ligand bound to a cobalt in a tetraphenyporphyrin (TPP) complex is studied. The effects of changing the Co-N-O bond angle, N-O and Co-N bond lengths, and the displacement of th cobalt atom from the porphinato core on the nitrosyl ~(15)N shielding tensor have been investigated. Results indicate a great sensitivity of the nitrosyl ~(15)NH shielding to local geometry, Using an experimental geometry, qualitative agreement between calculated an observed values is achieved. The presence of a swinging motion of the nitrosyl ligand is also discussed.
机译:使用密度泛函理论-局部轨道专用量规(DFT-IGLO),研究了四苯并卟啉(TPP)配合物中结合至钴的亚硝酰基配体的〜N屏蔽。研究了改变Co-N-O键角,N-O和Co-N键长以及亚钴基〜(15)N屏蔽张量上钴原子从卟啉核的位移的影响。结果表明,亚硝酰基〜(15)NH屏蔽对局部几何结构具有很高的敏感性。使用实验几何结构,可以实现计算值与观察值之间的定性一致性。还讨论了亚硝酰基配体的摆动运动的存在。

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