A unique 3D Co(II)-MOF based on [Co6(μ3-OH)4]8 +n chains: Synthesis, crystal structure, and magnetic property

•A unique 3D Co(II) MOF constructed from polymeric chains•A rare polymeric chain containing alternate tetranuclear and binuclear subunits•A new mixed topology or a fcu/cubic network•Antiferromagnetic interactions between the adjacent Co(II) ions

A novel metal-organic framework, [Co6(μ3-OH)4(ndc)4(bip)2(H2O)2]n (1)[H2 ndc = 1,4-naphthalenedicarboxylic acid, bip = 1,5-bis(imidazole-1-yl)pentane], constructed from unique [Co6(μ3-OH)4]8 +n chains containing alternate [Co4(OH)2]6 + and [Co2(OH)2]2 + subunits, was reported, which has a new (3,3,8,12)-connected or 12-connented fcu/cubic network and shows weak antiferromagnetic interaction between the adjacent Co(II) ions mediated through the carboxylate and hydroxyl groups.

Graphical abstractA novel metal-organic framework, [Co6(μ3-OH)4(ndc)4(bip)2(H2O)2]n, constructed from unique [Co6(μ3-OH)4]8 +n chains containing alternate [Co4(OH)2]6 + and [Co2(OH)2]2 + subunits, was reported, which has 12-connented fcu/cubic network or a new (3,3,8,12)-connected net.Figure optionsDownload full-size imageDownload as PowerPoint slide