One-dimensional coordination polymers [Co(acac) 2pz] n and [Co(acac) 2(4,4′-bipy)] n (acac=acetylacetone, pz=pyrazine, bipy=4,4′-bipyridine): synthesis, structures and magnetic properties

Abstract

Two one-dimensional coordination polymers [Co(acac) 2pz] n ( 1) and [Co(acac) 2(4,4′-bipy)] n ( 2) have been synthesized by reaction of Co(acac) 2(H 2O) 2 with pyrazine and 4,4′-bipyridine, respectively. They have a similar structural motif, consisting of one-dimensional linear chain structure linked via bridging pyrazine or 4,4′-bipyridine, and the acac chelated to the Co(II) ion. A compared magnetic investigation shows very similar magnetic behavior for the two compounds, demonstrating the similarity of pyrazine and 4,4′-bipyridine in mediating the magnetic coupling interactions.