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