Coordination Polymers with N-containing Multidentate Aromatic Ligands

2 Coordination Polymers with N-containing Multidentate Aromatic Ligands 

The other common donor coordination atom besides O atom is N. Many aromatic rings may contain one or more N-heteroatoms. These aromatic rings may interconnect with one another to form larger ligands, and more than one N-atom in the compound may participate in coordination to metal ions. 4,4 -Bipyridine (bpy) is an N-containing bidentate ligand widely used to form coordination polymers. Noro et al. used bpy as a 

3 Coordination Polymers with N- and O-containing Multidentate Ligands 

Through mixing of an N-containing ligand and an O-containing one in the same reaction system, porous coordination polymers with two or more ligands may be 

Kitaura et al. obtained a new lamellar compound [Cu(dhbc)2(4,4 -bpy)] H20 from a diethyl ether solution of copper nitrate, 4,4 -bipyridine, and 2,5-dihydroxybenzoic acid (dhbc).[202] There are strong n-n interactions between the layers of the compound, and because of these interactions the compound behaves as a 3-D framework structure with channels containing guest water molecules that are removable reversibly. After dehydration, the host material exhibits adsorption properties, but its adsorption capacity for nitrogen is affected by the gas pressure. 

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