P. Harter et J. David, FULVENYL-SUBSTITUTED CP LIGANDS .4. STABL E HETEROBINUCLEAR DONOR-ACCEPTOR SYSTEM WITH 6-PENTAFULVENYLCYCLOPENTADIENYL BRIDGE, Journal of organometallic chemistry, 459(1-2), 1993, pp. 30000012-30000014
The synthesis and spectroscopic behaviour of (CO)3Cr(C5H4=CH-C5H4)FeC5
H5 is described. The compound shows a bathochromic shift in the UV/vis
-spectra of 20 nm upon changing the solvent from n-hexane to THF. The
NMR spectra suggest that there is no internal rotational motion in the
molecule at room temperature.