Synthesis and characterization of 15N-labeled tetranuclear Ir complex via Li2C15N2
Xuechao Yan, Shu-Xiao Ji, Shengyuan Zhang, Qianru Wang, Jianping Guo, Ping Chen, Zhenfeng Xi, Junnian Wei*
Dalton. Trans., 2025. DOI: 10.1039/D5DT00644A.
The synthesis of 15N-labeled organometallic complexes is challenging due to limited suitable 15N-labeled precursors. Herein, we report the preparation of a 15N-labeled tetranuclear iridium complex, 15N-1, from Li2C15N2, with nitrogen atoms originally from 15N2 gas. Mono-methylation and single-electron oxidation of 15N-1 yield the corresponding ate complexes, 15N-2 and 15N-3. These complexes were characterized by 1H, 13C, and 15N NMR spectroscopy and X-ray diffraction.
