“…Weak communication between two ferrocenylcarbaldimine centres co-ordinated in a trans disposition about a nickel() ion has been described by others. 15,27 In contrast to 4, the complexes of L 2 -L 4 display two distinct chemically reversible Fe II -Fe III oxidations at E ₂ ₁ = ϩ0.32 ± 0.01 and ϩ0.38 ± 0.01 V [Table 8; Fig. 5(b)].…”