Az. Voskoboinikov et Ip. Beletskaya, REACTIVITY OF YTTERBIUM IN LIQUID-AMMONIA - 1 - SYNTHESIS OF THE COMPLEX WITH THE YTTERBIUM-IRON BOND, Russian chemical bulletin, 46(10), 1997, pp. 1789-1790
A solution of metallic ytterbium in liquid ammonia reacts readily with
various carbonyl complexes of metals to form the corresponding lantha
nide carbonylmetallates. The reaction of an excess of Yb in liquid NH3
with [CpFe(CO)(2)](2) gave (THF)(4)Yb[Fe(CO)(2)Cp](2) in 42% yield. I
t was suggested that the resulting complex contains two equivalent Yb-
Fe bonds.