Hydro(solvo)thermal synthesis of homochiral metal–camphorate coordination polymers

Abstract

Two thermally stable homochiral metal–camphorate coordination polymers, [Co(D-Cam)] (1) and [Cu₂(D-Cam)₂(D-H₂Cam)₂] (2), have been hydro(solvo)thermally synthesized from the reaction of D-camphoric acid (D-H₂Cam) with the corresponding metal salts. Polymer 1 has a three-dimensional homochiral framework involving one-dimensional cobalt–carboxylate chains aligned parallel to the [100] direction. Polymer 2 features a homochiral-layered structure with grid-like (4,4)-topology, which extended to a three-dimensional supramolecular assembly through hydrogen-bonded cyclic R₂²(8) patterned carboxylic acid dimers as supramolecular synthons. This supramolecular network appears to be self-penetrating and has a Schläfli symbol of 4⁴6¹⁰8. Magnetic studies revealed that polymer 1 exhibits possible antiferromagnetic couplings.