Nickel complexes 1,8-naphthyridine

A, whereas the N2—Hg distance is 2.03 A. The Hg—Hg bond in this compound is extremely short. The 1,8-naphthyridine nickel complex, [Ni2(l,8-naphthyridine)4Br2]+ PF , also has a very short metal metal bond length. However, all four of the naphthyridines are bridge-bonded and each metal atom is coordinated in a square-planar array by four nitrogen atoms.108... 

First coordination spheres including nitrogen and sulfur donors have also been used to constmct highly active nickel proton reduction catalysts. Employing a polypyridyl ligand framework. Sun and coworkers have created the complex [Ni (L)2(H20)2](BF4)2 for L=2-(2-pyridyl)-l,8-naphthyridine, which, under optimal, basic, photocatalytic conditions, has a remarkable turnover number of 3230... 

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