A highly reduced cyanogen ligand derived from cyanide reductive coupling.

@article{Fox2012AHR,
  title={A highly reduced cyanogen ligand derived from cyanide reductive coupling.},
  author={Alexander R. Fox and Christopher C. Cummins},
  journal={Chemical communications},
  year={2012},
  volume={48 25},
  pages={
          3061-3
        }
}
The synthesis, structure, and spectroscopic features of a bimetallic cyanogen complex obtained from the reductive coupling of cyanide by a niobium(IV) precursor are described, and a mechanism for the coupling reaction is proposed based on DFT calculations. 
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