Abstract
We wish to report that the duodecamethyl metallocene (C[sub 5]Me[sub 4]H)[sub 3]U (2) provides an electronic and steric environment that enables the synthesis and structural characterization by X-ray methods of the first isolable carbonyl complex of an actinide element, (C[sub 5]Me[sub 4]H)U(CO). Results of our study has demonstrated that, under appropriate conditions and with a suitable choice of coligands, uranium carbonyl complexes can be isolated. Our results question the current view of actinide carbonyls as unstable or unisolable entities. Preliminary results indicate that the electron-rich metal center in 2 may give rise to a correspondingly rich and diverse chemistry, an area which we are now exploring. 15 refs., 1 fig.
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