Journal of Organometallic Chemistry p. 327 - 342 (1991)
Update date:2022-08-11
Topics:
Paolucci, Gino
Fischer, R. Dieter
Benetollo, Franco
Seraglia, Roberta
Bombieri, Gabriella
Reaction of the new disodium salt: Na2<2,6-C5H3N(CH2C5H4)2 (2; 2,6-C5H3N = 2,6-pyridyl) with UCl4 in THF affords the reddish-green, mononuclear Cp2UIVCl2-derivative (Cp = η5-C5H5): μ-<2,6-CH2C5H3NCH2>(η5-C5H4)2UIVCl2 (1).According to a single-crystal X-ray study, 1 involves a notably strong U-N bond (U-Nav: 2.62(1) Angstroem) along with two nonequivalent Cl ligands (U-Cl: 2.615(3) and 2.636(3) Angstroem).The low-temperature 1H NMR spectrum of the paramagnetic complex is in full accord with the solid state structure 1.Up to room temperature, the dissolved molecules of 1 show no fluxionality on the NMR time scale, although the two CH2 proton resonances appear to undergo coalescence.
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