Synthesis and X-ray crystal structure of [U(eta-C8H8)(HMPA)(3)][BPh4], thefirst cationic monocyclooctatetraenyl compound of uranium (III), and its neodymium homologue

Authors
Cendrowski-Guillaume, SM Nierlich, M Ephritikhine, M
Citation
Sm. Cendrowski-guillaume et al., Synthesis and X-ray crystal structure of [U(eta-C8H8)(HMPA)(3)][BPh4], thefirst cationic monocyclooctatetraenyl compound of uranium (III), and its neodymium homologue, EUR J INORG, (6), 2001, pp. 1495-1498
Citations number
22
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
14341948 → ACNP
Issue
6
Year of publication
2001
Pages
1495 - 1498
Database
ISI
SICI code
1434-1948(200106):6<1495:SAXCSO>2.0.ZU;2-N
Abstract
The title compound was synthesized in 88% yield by reducing the uranium(IV) dication [U(COT)(HMPA)(3)][BPh4](2) (COT = eta -C8H8) with sodium amalgam while the neodymium analogue was prepared by substitution of the THF Ligand s in [Nd(COT)(THF)(4)][BPh4]. Comparison of the crystal structures of the c omplexes [M(COT)(HMPA)(3)][BPh4] (M = U, Nd, Sm) shows that the variations in the M-ligand bond lengths simply reflect the differences in the ionic ra dii of the metals.