Hg···Hg···Hg Interaction Stabilizes Unusual Trinuclear Double Sandwich Structure of Mercury(II) Porphyrins.,Inorganic Chemistry

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Hg···Hg···Hg Interaction Stabilizes Unusual Trinuclear Double Sandwich Structure of Mercury(II) Porphyrins.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-09-03 , DOI: 10.1021/acs.inorgchem.0c01627
Anjani Kumar Pandey ₁ , Mohammad Usman ₁ , Sankar Prasad Rath ₁

Affiliation

For the first time, fully characterized and stable trinuclear “double sandwich” molecules are reported with Hg(II) ion using a highly flexible porphyrin dimer. The molecules display interesting and intense luminescence properties at room temperature. The present investigation clearly demonstrates that attractive mercurophilic interactions do play an essential role in bringing two porphyrin macrocycles exactly on top of each other with an unfavorable fully eclipsed geometry to produce short Hg···Hg distances. Interactions between Hg(II) dz² orbitals provide the directionality with a linear Hg₃ core having short Hg···Hg distances despite the fact that ligand framework is highly flexible.

中文翻译：

Hg···Hg···Hg相互作用稳定了汞（II）卟啉的异常三核双夹心结构。

首次使用高度柔性的卟啉二聚体报道了具有Hg（II）离子的完全表征且稳定的三核“双夹心”分子。分子在室温下显示出有趣且强烈的发光特性。本研究清楚地表明，有吸引力的嗜硫性相互作用在使两个卟啉大环以不利的全蚀几何结构彼此精确重叠的方式产生短的Hg···Hg距离方面确实起着至关重要的作用。尽管配体骨架高度灵活，但Hg（II）dz ²轨道之间的相互作用提供了具有短Hg···Hg距离的线性Hg ₃核的方向性。

更新日期：2020-09-21

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