Unsymmetrical β‐Fused Blatter Radical Zinc Phthalocyanines

TL;DR

Scientists created a new type of stable molecule combining phthalocyanines with radical systems, showing unique electronic and magnetic properties.

Contribution

First synthesis of β-fused Blatter–Zn phthalocyanines with persistent radical π-systems and tunable spin properties.

Findings

Molecules show π–π-driven crystal packing and SOMO-centered redox behavior.

Single-crystal X-ray diffraction reveals centrosymmetric π–π dimer motifs.

DFT studies show cooperative spin communication for tunable materials.

Abstract

Blatter‐type radicals defy conventional chemical expectations, combining unusual stability with intriguing electronic and magnetic properties. We report the first phthalocyanines fused at the periphery with a Blatter‐type radical, creating an extended π‐conjugated framework. These hybrids merge the characteristic optical and electronic properties of phthalocyanines with a robust, spin‐bearing radical, maintaining remarkable stability under ambient conditions. Spectroscopic, crystallographic, and computational studies reveal their distinctive electronic structure, offering insights into radical π‐conjugated systems.

Herein, we report the first synthesis of a new class of β‐fused Blatter–Zn phthalocyanines featuring a persistent radical π‐system, π–π‐driven crystal packing, and SOMO‐centered redox behavior. Single‐crystal X‐ray diffraction shows packing motifs dominated by centrosymmetric π‐π dimers. DFT reveals cooperative spin communication, establishing a platform for tunable spin and optical materials.

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