Nickel complexes amidines

Nickel, tris(l, 10-phenanthroline) racemization, 1,24. 466 solid state, 1, 467 structure, 1,64 Nickel complexes, 5,1-300 acetylacetone alcoholysis, 2, 380 pyridine complexes, 2, 386 solvolysis, 2,379 structure, 2,388 amidines... 

Methylenecyclopropanes have been carboxylated with gaseous carbon dioxide in the presence of a stoichiometric amount of nickel(O) complexes [150]. Depending on the polarity of the reaction solvent and the nature of amine ligand (amidine or guanidine base), several reactions pathways have been observed, which may involve either oxidative coupling of CO2 with the C-C double bond of the substrate (see Sect. 5.3) or opening of the three-membered ring and further reaction with the heterocumulene. 

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