Crystal Structure of Mono- and Trinuclear Ni(II) Complexes with Bis-Azomethine Based on 2-Amino-3-Formylpyridine

Abstract

The structure of a new mononuclear nickel(II) complex with bis-azomethine [Ni(H₂L)]⁺ · CH₃COO^– · H₂O, resulting from condensation of 1,3-diaminopropan-2-ol with 2-amino-3-formylpyridine (H₃L), was studied by X-ray diffraction (CIF files CCDC nos. 1562927, 1562928). Apart from the mononuclear complex, the reaction gave a minor amount of the trinuclear metal chelate [Ni₃L'(H₂O)₂]⁺ · (CH₃COO)^– · CH₃OH · H₂O, where L' is N₅O₂-donor ligand containing two 3-(((2-aminopyridin-2-yl)methylene)amino)-1-aminopropan-2-ol moieties linked by a 2-aminopyridine-3-methylene group.