Discrete Iridamacrocycle Formation via C–H Activation of an N-Heterocycle

An N-heterocycle (pyrazine) utilized as a precursor was employed to construct multinuclear metallamacrocycle 1 though C–H activation and metal–metal bond formation under mild conditions. This iridamacrocycle was fully characterized by 1H NMR, IR, and elemental analysis. In order to further confirm its structure, X-ray analysis was carried out, proving the hexanuclear iridium macrocyclic backbone of the complex.

本研究以氮杂环化合物吡嗪（pyrazine）作为前驱体，在温和条件下通过碳氢键活化（C–H activation）与金属-金属键形成反应构建了多核金属大环1。该铱基金属大环已通过氢核磁共振谱（1H NMR）、红外光谱（IR）及元素分析完成全面表征。为进一步确证其结构，本研究开展了X射线衍射分析（X-ray analysis），结果证实该配合物具有六核铱大环骨架。