Unique 3D self-penetrating Co-II and Ni-II coordination frameworks with a new (4(4).6(10).8) network topology

Two unique six-connected self-penetrating coordination polymers with a new (4(4).6(10).8) network topology, derived from the cross-linking of two 6(6)-dia subnets, were constructed from Ni-II or Co-II and two types of V-shaped tectons. The NiII complex 1 shows an antiferromagnetic coupling via mu-carboxylate and mu-H2O pathways, whereas the Co-II complex 2 exhibits the single-ion behavior in 300-34 K and then a ferromagnetic coupling at lower temperatures.