Synthesis and Structural Features of Co(II) Compounds with 3-Arylidene-1-Pyrroline Derivatives and Monocarboxylic Acids Anions

A series of acetate and trifluoroacetate compounds of cobalt(II) with derivatives of 3-arylidene-1-pyrrolines (X-L; X = Cl, OH) as N-donor ligands was synthesized. Varying the synthesis and crystallization conditions made it possible to obtain coordination compounds of various compositions and structures: a tetranuclear complex based on a cubane fragment {Co4(OH)4}4- - [Co4(OH)4(Cl-L)4(OAc)4] (I), a ID-polymer complex [Co(H2O)(Cl-L)2(CF3COO)1.167(OAc)0.833]n (II) or a molecular complex [Co(OH-L)2(OAc)2] (III). The synthesized compounds were characterized by X-ray diffraction, IR spectroscopy and CHN analysis. The structure and crystal packing of the obtained complexes were analyzed in detail, the main structureforming non-covalent interactions in crystals were identified.