Spin-crossover cobalt(II) compound with banana-shaped structure

A banana-shaped spin-crossover (SCO) cobalt(II) complex [Co(C16-terpy)(2)](BPh4)(2) (1) with long alkyl chains, based on a terpyricline frame, was synthesized. Compound 1 exhibited very gradual SCO behavior and changes in the dielectric constant. This shows a way in which SCO materials can be used in electronic devices.