Thermal decomposition of dinuclear double-helical 3,3′-bis(dipyrrinato)zinc(II) complexes in air and argon

The thermal destruction of dinuclear double-helical 3,3′-bis(dipyrrinato)zinc(II) complexes [Zn2L2] was investigated. The compounds demonstrated good thermal stability (up to 440 °C) in argon and (up to 222 °C) in air. Thermal stability of [Zn2L2] is greatly determined by changing of the number and the nature of substituents in the terminal pyrrole cycles and meso-spacer of 3,3′-bis(dipyrrolylmethene) ligands. The influence of molecule structure and medium nature on the thermal properties and perspective directions of complexes practical use are discussed.