All SCO CP-dBCP syntheses were performed under inert conditions using argon 5.0 (purity ≥ 99.999%) using Schlenk tube technique and repeated at least twice. Tetrahydrofuran (THF, p.a. grade) for the SCO syntheses was obtained from Bernd Kraft and degassed with argon for at least 30 min. [FeL(MeOH)2] was synthesized as described before. 4,4´-bipyridine (98%) was obtained from Alfa Aesar and used as received.