Investigations of new barium dicarboxylates

Abstract

Structures of new barium dicarboxylates (salts of glutaric, adipic, pimelic, suberic, azelaic and dodecanedioic acids {1–6}) were characterized. Structure solution from powder data was performed in the cases of barium adipate {2}, pimelate monohydrate {3} and dodecanedioate {6}. Structures of barium glutarate pentahydrate {1}, suberate {4} and azelate {5} were obtained from single crystal analysis. Even though these compounds are salts of homologus series of dicarboxylic acids [HOOC—CnH2n—COOH; n = (3–10)], the obtained materials are characterized by broad structural diversity. The synthesized salts form layered (2D) or three-dimensional (3D) structures. Coordination polyhedra of BaOn(8 or 9) – create layers or linear systems of polyhedra connected by edges or edges and vertices, or layers formed by isolated polyhedra linked by carboxylic acids. The degree of hydratation ranges from 5 to 0; the obtained materials crystallize in various crystallographic systems, from triclinic to tetragonal.