Phenoxazinyl Zn(ii) diradical complex formed via redox-driven cyclization of a 2-aminophenol-based N₃O ligand. Isolation of the modified N₃ ligand radical and its Ni(ii) complex

Narottam Mukhopadhyay,Arunava Sengupta,Francesc Lloret,Rabindranath Mukherjee

DALTON TRANSACTIONS（2024）

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摘要

Aerobic reaction between the pyridine-2-carboxamide-2-aminophenol N3O ligand (H3L1) and Zn(ClO4)(2)6H(2)O in CH3CN affords an N-3 phenoxazinylate coordinated Zn(ii) complex; its diradical electronic structure [Zn-II{(L-1*)(center dot)(-)}(2)] has been elucidated from redox, spectroscopic (UV-VIS and EPR), and magnetic measurements and DFT calculations. Isolation and characterization of the metal-assisted redox-driven modified N-3 ligand as a radical cation (H2L1*)(center dot)(+) and its Ni(ii)-diradical complex [Ni-II{(L-1*)(center dot)(-)}(2)] have also been achieved.

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Phenoxazinyl Zn(ii) diradical complex formed via redox-driven cyclization of a 2-aminophenol-based N3O ligand. Isolation of the modified N3 ligand radical and its Ni(ii) complex

Phenoxazinyl Zn(ii) diradical complex formed via redox-driven cyclization of a 2-aminophenol-based N₃O ligand. Isolation of the modified N₃ ligand radical and its Ni(ii) complex