A novel 3D metal-organic framework with the pcu topology constructed from 1,4-diaza-bicyclo[2.2.2]octane-N,N′-dioxide

A novel 3D metal-organic framework, Cd(N2C6O2H12)3 · 2(NO3) (1), has been synthesized under mild conditions; the single-crystal X-ray diffraction revealed that the ligand dabco(1,4-diaza-bicyclo[2.2.2]octane) was oxidized to its N-oxide in situ and polymer 1 had a non-interpenetrated pcu topology, which is also known as α-polonium-type.