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Effect of the Alkali-Metal Cation on the Bonding Mode of 2,5-Dimethylpyrrole in Divalent Samarium and Ytterbium Complexes

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journal contribution
posted on 14.03.2002, 00:00 by Mani Ganesan, Christian D. Bérubé,, Sandro Gambarotta, Glenn P. A. Yap
The reactions of SmI2(THF)2 and YbI2(THF)2 with the alkali-metal salts of 2,5-dimethylpyrrole, or the reaction of SmCl3(THF)3 and YbCl3(THF)3 with the same ligands followed by reduction with the appropriate alkali metals, led to the formation of divalent mono- and polynuclear complexes. Structural analysis of these complexes indicated that the bonding mode adopted by the ligand depends on the nature of the alkali-metal cation retained in the structure.