Donor‐acceptor tin(IV) complexes with α‐diimine and catecholate ligands

Abstract A series of new octahedral bis‐3,6‐di‐tert‐butylcatecholates based on tin(IV) containing metal‐coordinated N‐donor ligands (substituted iminopyridines and diazabutadienes) has been synthesized and structurally characterized. The compounds, both solid and in solution, are intensely colored. They absorb in the visible region of the spectrum. Charge transfer between the catecholate donor and the diimine acceptor is responsible for the absorption. This observation is in good agreement with the DFT calculations and with the electrochemical studies carried out by CV.