Synthesis and X-ray crystal structure of Sm(C 8 H 8 )(2,4-C 7 H 11 )·thf

SmCl3 reacts with K2C8H8 to yield the complex Sm(C8H8)Cl·2thf, which reacts with K(2,4-C7H11)(2,4-C7H11= 2,4-dimethylcyclopentadienyl) to form Sm(C8H8)(2,4-C7H11)·thf; the X-ray crystal structure of Sm(C8H8)(2,4-C7H11)·thf shows that the 2,4-dimethylcyclopentadienyl has a ‘U’ conformation.