The bulky dimeric iron complex, [CpBIGFe(CO)2]2, readily activates elemental chalcogens (S8, Sered and α-Te) under mild conditions at room temperature. Six compounds containing Q22− ligands (Q = S, Se) and a Te2− ligand, respectively, were isolated and completely characterized, including by X-ray diffraction techniques.
![Graphical abstract: Low temperature activation of S8, Sered and α-Te with [CpBIGFe(CO)2] radicals](http://hg.y866.cn/compound/lib/scimg/usr/1/C4DT01764A.jpg)
