Síntese e Caracterização de Polímeros de Coordenação dos Metaloligantes [M(opba)]2- [M= Cu2+ e Ni2+; opba= N,N´orto-fenileno-bis(oxamato))]

Abstract

The chemistry of supramolecular coordination compounds and MOFs (Metal-Organic Frameworks) enables the formation of several complex molecular systems, essential systems for modern science due to the specific interactions of highly selective structures. In order to obtain selective structures, metalloligand coordination compounds are excellent building blocks, because they usually have some rigidity, permanent pores and allow the functionalization of the topology and the internal surface, in addition they can involve auxiliary groups and transition metal ions in self-assembly. Thus, in the present work, the synthesis and characterization of coordination polymers were carried out using the building block [M(opba)]2- [M= Cu2+ e Ni2+; opba= N,N'ortho-phenylene-bis(oxamate))] and the auxiliary ligands pyrazine and 4,4'-bipyridine. The synthesized compounds were characterized by infrared (IR) spectroscopy and no evidence of coordination of the organic ligands was observed, requiring further studies on the synthesis methodology.