171562-70-2Relevant academic research and scientific papers
Cationic methallylnickel complexes with chelating ligands: A new dynamic complex isomerization equilibrium
Ecke, Axel,Keim, Wilhelm,Bonnet, Michel C.,Tkatchenko, Igor,Dahan, Fran?oise
, p. 5302 - 5307 (1995)
The synthesis of the cationic complexes [methyl 2-(diphenylphosphino)benzoate-κ2P,O]-(η 3-methallyl)nickel(II) tetrafluoroborate (1), [methyl 2-(diphenylphosphino)nicotinate-η2P,N]-(η 3-methallyl)nickel(II) tetrafluoroborate (2), and bis[μ-2-(diphenylphosphino)pyridine-κ2P,N]bis(η 3-methallyl)nickel(II) bis(tetrafluoroborate)·CH2Cl2 (3) are reported. The crystal structures of 1 and 2 have been disclosed in a preliminary previous paper. The molecular structure of the cation of 2 in the crystal shows that the ligand forms a strained 4-membered ring with a κ2P,N coordination. In solution a new dynamic complex isomerization was found, indicating an equilibrium between 2 and 4, the latter with a 6-membered ring and a κ2P,O coordination of the ligand methyl 2-(diphenylphosphino)nicotinate (5).
