Aza-Dipyrrinate Stabilized Compounds with a Low-Valent Main Group Element

The possibility of using aza-dipyrromethene (a-DPM) ligands to stabilize compounds containing low-valent main group elements is demonstrated through the isolation of germylenes, a-DPM(p-tol)GeCl (2), a-DPM(Naph)GeCl (6), and a-DPM(Naph)GeN(TMS)(2) (7) (tol=tolyl, Naph=naphthyl). Because of the presence of the a-DPM ligand, these germylenes exhibit an absorption maximum at around 640 nm, a highly red-shifted value previously unknown for germylenes.

Automated summary

The possibility of stabilizing compounds containing low-valent main group elements using aza-dipyrromethene (a-DPM) ligands is shown through the isolation of germylenes. These germylenes, including a-DPM(p-tol)GeCl (2), a-DPM(Naph)GeCl (6), and a-DPM(Naph)GeN(TMS)(2) (7) (tol=tolyl, Naph=naphthyl), exhibit a highly red-shifted absorption maximum at around 640 nm, a value not previously observed for germylenes.