Anion-controlled formation of diverse porous cobalt(II) coordination polymers with 1,2-bis(4-pyridyl)ethane-N,N′-dioxide

In the coordination polymers [Co(μ-L)Cl2(H2O)2]n (1), {[Co2(μ-L)(H2O)8](NO3)4}n (2) and {[Co(μ-L)1.5(L)(H2O)2](L)0.5(ClO4)2}n (3) (L = 1,2-bis(4-pyridyl)ethane-N,N′-dioxide), variation of the counter anion leads to diverse porous supramolecular frameworks.