Yukio Nakamura, Mitsuru Gotani, S. Kawaguchi
Feb 1, 1972
Citations
0
Influential Citations
7
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Dibromo(acetylacetone)cobalt(II), a new complex containing an acetylacetone molecule as the bidentate ligand, was formed by the reaction of tris(acetylacetonato)cobalt(III) with bromine in dichloromethane, and characterized by elemental and thermogravimetric analyses and electronic and infrared spectra. The same compound was also prepared by direct addition of acetylacetone to anhydrous cobalt(II) bromide. The radical nature of the redox step involved in the reaction pathway from the starting cobalt(III) chelate to the product cobalt(II) complex of acetylacetone was demonstrated by polymerization of methyl methacrylate and styrene remarkably enhanced by the reaction system.