Effect of Synthesis Conditions on the Molecular and Crystal Structures of Heterometallic 1D-Polymeric Acetate Complexes with the {Dy2Co}n Motif

Resumo

New heterometallic 1D-polymeric acetate complexes with the {Dy₂Co}_n motif of the metallic framework, [Dy₂Co(CH₃COOO)₈(H₂O)₄]_n ∙ 6nH₂O (I) and [Dy₂Co(CH₃COOO)₈(H₂O)₂]_n ∙ 2nCH₃COOH (II), are synthesized and studied. The molecular structures of the obtained compounds (CIF files CCDC nos. 1861619 (I) and 1861620 (II)) differ by the qualitative composition of the coordination environment of Dy as well as by the coordination modes of the acetate anions, which substantially affects the lengths of the corresponding Dy···Dy and Dy···Co distances in the chain. The mentioned distinctions and different solvate compositions of I and II are determined by the synthesis conditions of the complexes.