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Updated: Jun 19, 2025

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Aza-metallacycles with a heptavalent Re (d0) center
Qianhang Wang1, Yarong Wang2, Yue Zhao1
1School of Chemistry, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China. jiangwf@dlut.edu.cn.
Abstract:
The oxidation state of the metal center is important for a conjugated metallacycle. Although high valent d0-metallacycles of main groups and early transition metals have been reported, such examples of late transition metals are limited. The reactions of ReOCl3(PPh3)2 with 2-ethynyl anilines produced alkenyl amino Re(V) complexes, which can be further oxidized to Re(VII) aza-metallacycles. The conjugated rhenacycle is nonaromatic, however, with close to zero NICS values and localized currents observed by AICD and GIMIC studies.
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