Extension of the polycyclic benzo-rhenapyrylium structure by a fused metallaaromatic ring and a benzene unit are reported. The dirhena-aromatic complex 4 shows strong absorption in the visible region and a significant absorption in the near-infrared (NIR) region (λmax = 842 nm). DFT calculations are performed to understand its aromatic nature and electronic behavior.
W. Bai, Y. Sun, Y. Wang, Y. Zhou, Y. Zhao, X. Bao and Y. Li, Chem. Commun., 2022, 58, 6409 DOI: 10.1039/D2CC01789J
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