Abstract
Three cobalt(II) coordination polymers, {[Co(nip)(4,4′-bpy)] · 3H2O} n (1), [Co(nip)(bpe)] n (2), and [Co(nip)(bpp)(H2O)] n (3), were hydrothermally synthesized by the reaction of cobalt nitrate hexahydrate and nip with 4,4′-bpy, bpe, and bpp [nip = 5-nitro-1,3-benzenedicarboxylato, 4,4′-bpy = 4,4′-bipyridine, bpe = 1,2-bis(4-pyridyl)ethane, bpp = 1,3-bis(4-pyridyl)propane], respectively. Co(II) displays different coordination in the three complexes, resulting in different structures with nanoscale channels. Compounds 1 and 2 form 2-D layer structures, but 3 has a two-fold interpenetrated 3-D framework. The magnetic properties associated with their crystal structures were investigated.
Acknowledgments
We acknowledge financial support by the Nation Natural Science Foundation of China (grant No. 20871095), and the authors also acknowledge the reviewer's help for .