Organometallic copper(II) complex of --methyl N-confused pyrrole-bridged doubly -methyl N-confused hexaphyrin.

Org Biomol Chem

School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.

Published: June 2024

Synthesis, spectroscopic and theoretical characterization of a hitherto unknown - N-confused -methylpyrrole-bridged doubly N-confused hexaphyrin (molecule 5) and its organometallic copper(II) complex (molecule 6) are reported herein. The absence of Q-type bands in the UV-Vis spectrum and the high chemical shifts of the inner proton signals of 5 suggest its globally non-aromaticity. The spectroscopic evidence of non-aromaticity for 5 and the paramagnetic nature of 6, are fully supported by density functional theory (DFT) calculations of the UV-Vis spectra, electron paramagnetic resonance (EPR) -tensor parameters, and the magnetically induced current density strengths obtained with the gauge-including magnetically induced currents (GIMIC) method.

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http://dx.doi.org/10.1039/d4ob00691gDOI Listing

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