期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 695, 期 25-26, 页码 2789-2793出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2010.09.003
关键词
Group 3 metal; C-C coupling; Reductive elimination; Single electron reduction; Computational chemistry
Applying DFT methods, the reductive elimination reaction of bis(pyridyl) rare-earth metal cation [Ln(eta(2)-C, N-pyridyl)(2)(THF)(3)](+) (Ln = Y, La) was studied. The effect of both electron-donating and electron-withdrawing substituents in the para-position of the pyridine ring was considered. An alternative mechanism for the C-C coupling reaction between pyridine derivatives (pyridine, DMAP and 4-trifluoromethyl-pyridine) and [LnMe(2)(THF)(5)](+) (Ln - Y or La) is suggested. The reaction involves a single electron reductive C-C coupling to form of Ln(II) complexes with a bipyridine radical anion. (c) 2010 Elsevier B.V. All rights reserved.
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