Anionic triscyclopentadienyluranium(III) hydrides
Résumé
Addition of H− to [(C5H4R)3U] (R . H, Me, SiMe3, or tBu) or sodium amalgam reduction of the UIV hydrides [(C5H4R)3UH] (R . SiMe3, or tBu) afforded the hydrido-bridged anions [(C5H4R)3 UHU(C5H4R)3]− (R . H or Me) or the monomeric anions [(C5H4R)3UH]− (R . SiMe3 or tBu). Crystals of [Na(18-crown-6)(THF)2][(C5H4SiMe3)3UHU(C5H4SiMe3)3] were obtained from an equimolar mixture of [Na(18-crown-6)][(C5H4SiMe3)3UH] and [(C5H4SiMe3)3U] and their structure determined.