Crystallographic Studies of Synthetic Corrinoids. III. Structural similarities and differences between A/D‐seco‐corrinoid complexes of divalent nickel, palladium and platinum

摘要: X-ray crystal structure investigations of the isomorphous perchlorate salts complexes an A/D-seco-corrinoid ligand (I) with divalent nickel, palladium and platinum are reported. The structures determined for Pd- Pt-complexes virtually superposable, that Ni-complex, although similar to other two, shows significant differences respect metal coordination spatial relationship A D rings their substituents. These similarities discussed in relation photochemical A/D cyclization leading corrin (II).