Bis -cyclopentadienyl 1,2-dimethoxyethane ytterbium II

Work-up, as above, gives the pure complex as green crystals. Yield 1.40 g (96%). (The checkers isolation method gave 68%). 

Shriver, TTte Manipulation of Air-Sensitive Compounds, McGraw-Hill, New York, 1969. 

Transition-Metal Compounds, in Organometallic Syntheses, Vol. I, J. J. Eisch and R. B. King (eds.), 1965 Vol. 2, J. J. Eisch, Nontransition-Metal Compounds, 1981 Academic Press, New York. 

Submitted by WILLIAM J. EVANS and TAMARA A. UUBARRI Checked by HERBERT SCHUMANN and SIEGBERT NICKEL 

The complexes described below are extremely air and moisture sensitive. Therefore, the syntheses are conducted under nitrogen with rigorous exclusion of air and water by using Schlenk, vacuum-line, and glove-box techniques.  

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