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Bis(tetramethylcyclopentadienyl)uranium dichloride by Jennifer C. Green; Oliver Watts is a Chemistry article available to read on EtoBox.

What is Bis(tetramethylcyclopentadienyl)uranium dichloride about?

Reaction of ti-n-butyl(tetramethylethylcyclopentadienyl)tin with uranium .tetrachlokIde in toluene results in the red air-sensitive compound bis(tetramethyl-ethylcyclopent&lienyl)uranium dichloride\_ The only dicy~lopentadienylumnmm(IV) halides so far reported are those in which the rings are joined by various bridging groups [I]\_ The known chloro -derivatives & complex anions, e.g. [X(C, Hi )+] 2 U, Cl, -Li+ (THF)2 where X = CH, , .Me,Si,-CH, CH, CH\_, . Although both mono-and tri-cyclopentadienyluranium h+dk have. beeti isolated, (Q-C, H, )\* UCll is mistable. In a typical Preparation (Me,, EtCs )(n-C4H9 )3 Sn was stirred with UCL in a molar ratio of 4/l in refluxing toluene for 20 h. Toluene was removed from the ~'resulting deep red stilution Under vacua and on standing dark red crystals formed. These were very soluble in petrol and toluene. Analyses were consistent %v$%the-stoichiometry Cz2 H,, Cl, U. and the mass spectrum showed parent ion peaks i&&at&g the vapour phase species Was monomeric. The ' H NMR in deuterobenzene at room temperature showed broad bands at 6 -14.40.(2)s, -5.25 ($)s, +6.0 (4)m, t9.75 (l)s, ppm (relative to C, H, ). The compound sublimed readily and the

Who reads Bis(tetramethylcyclopentadienyl)uranium dichloride?

Author

Jennifer C. Green; Oliver Watts

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-328X)

Published

1978

Language

EN

Field

Chemistry (Physical Sciences)