π-Complexes of Diborynes with Main Group Atoms.,Chemistry - An Asian Journal

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π-Complexes of Diborynes with Main Group Atoms.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-04-16 , DOI: 10.1002/asia.202000185
William C Ewing _{1,

2} , Theresa Dellermann _{1,

2} , Y T Angel Wong ₃ , James D Mattock ₄ , Alfredo Vargas ₄ , David L Bryce ₃ , Rian D Dewhurst _{1,

2} , Holger Braunschweig _{1,

2}

Affiliation

We present herein an in-depth study of complexes in which a molecule containing a boron-boron triple bond is bound to tellurate cations. The analysis allows the description of these salts as true π complexes between the B-B triple bond and the tellurium center. These complexes thus extend the well-known Dewar-Chatt-Duncanson model of bonding to compounds made up solely of p block elements. Structural, spectroscopic and computational evidence is offered to argue that a set of recently reported heterocycles consisting of phenyltellurium cations complexed to diborynes bear all the hallmarks of π-complexes in the π-complex/metallacycle continuum envisioned by Joseph Chatt. Described as such, these compounds are unique in representing the extreme of a metal-free continuum with conventional unsaturated three-membered rings (cyclopropenes, azirenes, borirenes) occupying the opposite end.

中文翻译：

具有主族原子的二硼炔的 π 配合物。

我们在此提出了对复合物的深入研究，其中含有硼-硼三键的分子与碲酸盐阳离子结合。分析允许将这些盐描述为 BB 三键和碲中心之间的真正 π 配合物。因此，这些配合物将著名的杜瓦-查特-邓肯森键合模型扩展到仅由 p 块元素组成的化合物。结构、光谱和计算证据表明，最近报道的一组由苯碲阳离子与二硼炔络合组成的杂环具有 Joseph Chatt 设想的 π 络合物/金属环连续体中 π 络合物的所有特征。如上所述，这些化合物的独特之处在于代表了无金属连续体的极端，传统的不饱和三元环（环丙烯、氮杂环、硼杂环）占据了相反的一端。

更新日期：2020-03-23

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