Hydrothermal Syntheses and Crystal Structures of Two Layered Nickel(II) Coordination Polymers Based on 1,2,3-Benzenetricarboxylic Acid

摘要

The hydrothermal reactions of Ni(II), 1,2,3-benzenetricarboxylic acid (1,2,3-H₃btc) and 4,4′-bipyridine (4,4′-bpy)/1,2-bis(4-pyridyl)ethane (bpa) yield two layered nickel(II) coordination polymers, [Ni₂(1,2,3-btc)(OAc)-(4,4′-bpy)₂(H₂O)]·2H₂O (1) and [Ni(ip)(bpa)] (2) (ip=isophthalate), respectively. Both complexes are 2-D coordination network based on 1-D Ni-carboxylate chains. The 1,2,3-btc ligand adopts 3-bridging mode in complex1, but transformed to isophthalate (ip) ligand through decarboxylation in2. The formation of the two complexes indicates that hydrothermal conditions andin-situ ligand reaction have significant effect on constructing coordination polymers.