Synthesis and characterization of 15N-labeled tetranuclear Ir complexes via Li2C15N2

Xuechao Yan; Shu-Xiao Ji; Shengyuan Zhang; Qianru Wang; Jianping Guo; Ping Chen; Zhenfeng Xi; Junnian Wei

doi:10.1039/D5DT00644A

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Synthesis and characterization of ¹⁵N-labeled tetranuclear Ir complexes via Li₂C¹⁵N₂†

Xuechao Yan,

^a Shu-Xiao Ji,

^a Shengyuan Zhang,^bc Qianru Wang,

*^bc Jianping Guo,

^bc Ping Chen,

^bc Zhenfeng Xi

^ad and Junnian Wei

*^a

Author affiliations

* Corresponding authors

^a Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
E-mail: jnwei@pku.edu.cn

^b Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
E-mail: wqr92@dicp.ac.cn

^c Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

^d State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China

Abstract

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.

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Article information

DOI: https://doi.org/10.1039/D5DT00644A
Article type: Paper
Submitted: 18 Mar 2025
Accepted: 18 Mar 2025
First published: 19 Mar 2025

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Dalton Trans., 2025,54, 6246-6251

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Synthesis and characterization of ¹⁵N-labeled tetranuclear Ir complexes via Li₂C¹⁵N₂

X. Yan, S. Ji, S. Zhang, Q. Wang, J. Guo, P. Chen, Z. Xi and J. Wei, Dalton Trans., 2025, 54, 6246 DOI: 10.1039/D5DT00644A

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