Unsymmetrical β-Fused Blatter Radical Zinc Phthalocyanines.

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.