Abstract
The reactivity of the reduced heterobimetallic
complex Zr(iPrNPiPr2)3CoN2 (1)
toward aryl azides was examined, revealing a four-electron redox transformation
to afford unusual heterobimetallic zirconium/cobalt diimido complexes.
In the case of p-tolyl azide, the diamagnetic C3-symmetric bis(terminal imido) complex 3 is formed, but mesityl azide instead leads to asymmetric
complex 4 featuring a bridging imido fragment.