“…A search in the CCDC database concerning six-coordinate metal complexes with a MO 2 N 4 chromophore bearing two monodentate salicylato derivatives as ligands has revealed that in the majority of the reported complexes, especially in the co-existence of monodentate N-donor ligands [70][71][72], flexible N,N′-donor ligands [73][74][75] and planar N,N′,N″,N‴-donor porphyrinato derivatives [76], the salicylato ligands are in trans arrangement [70][71][72][73][74][75][76]; in fewer cases and especially in the co-existence of robust N,N′-donor ligands such as bipy and phen ligands, the salicylato ligands (including the bulky 3-hydroxy-2-naphthoato and 2-hydroxy-3,5-diisopropylbenzoato ligands) were found in cis positions [77][78][79][80], similarly to complex 2.…”