Cyanoscorpionates: Co(II), Mn(II), and Ni(II) complexes coordinated only through the cyano group

Cyanoscorpionate Ligands: Agostic Interactions in a Series of Metal Complexes Containing the Tris(4‐cyano‐3‐phenylpyrazolyl)borate and Bis(4‐cyano‐3‐phenylpyrazolyl)borate Ligands

“…A different paradigm is observed with Tp t Bu,4CN . While Tp t Bu is unable to support a complex with a ligand‐to‐metal ratio of 2:1, Tp t Bu,4CN can support such a complex by virtue of this ligand's ability to coordinate through the CN group – the resulting [Tp t Bu,4CN 2 ML 4 ] complexes feature two axial Tp t Bu,4CN ligands, each coordinated only through one CN group, and four neutral ligands in the equatorial plane …”