A novel interpenetrating nickel polymer with mixed ligand containing 1D chain and 2D bilayer motifs constructed by 4,4′-bipy

A novel 3D nickel twofold-interpenetrating framework with mixed ligand, [Ni3(H2O)6(4,4′-bipy)4(SIPA)2] · 8H2O (1), has been hydrothermally prepared. X-ray diffraction shows the 3D framework contains Ni-4,4′-bipy 1D chain and 2D bilayer motifs and carboxylate spacers, and the connection of 1D chain and 2D bilayer motifs by carboxylate ligand results in the formation of the final framework with twofold-interpenetration net.