Plois, Markus and Wiegand, Thomas and Wolf, Robert (2012) Novel Ruthenium(II) Aluminate Anions: Building Blocks of Unique Cage Structures. ORGANOMETALLICS, 31 (24). pp. 8469-8477. ISSN 0276-7333, 1520-6041
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New anionic ruthenium(II) aluminohydrides were synthesized from [Cp*RuCl](4), LiAlH4, and lithium alkyls. The reaction of [Cp*RuCl](4) with 8 equiv of LiAlH4 afforded the lithium salt [Li(DME)(3)][CP*Ru-2(2)(mu-H)(mu-AlH4)(2)] (1) in 65% isolated yield. Reactions of [Cp*RuCl](4), LiAlH4, and RLi (R = Me, Et, iPr, nBu) in THF yielded the new compounds [Li-5(THF)(2)Cp*6Ru6Al4Me4H19] (2) and [Li-2(THF)(2)Cp*RuAl2R2H7)](2) (3-5, R = Et, iPr, tBu). The compounds were characterized by single-crystal X-ray crystallography, multinuclear liquid and solid-state NMR spectroscopy, IR spectroscopy, and microanalysis. The molecular structures of 1-5 display novel anionic ruthenium(II) aluminate frameworks. In the case of 2-5, these anions associate into unusual cage structures via Li-H interactions in the solid state. Variable-temperature H-1 and Li-7 NMR studies on the fluxional complex 5 in deuterated toluene show that the cage structure of this compound is retained at low temperature in solution.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | C BOND-CLEAVAGE; BIMETALLIC HYDRIDE COMPLEXES; RAY CRYSTAL-STRUCTURES; MOLECULAR-STRUCTURE; BIS(MU-SILYLENE) COMPLEX; PENTAHYDRIDE COMPLEX; FLUXIONAL BEHAVIOR; REACTIVITY; LIGAND; NMR; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Robert Wolf |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Apr 2020 13:20 |
| Last Modified: | 30 Apr 2020 13:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17578 |
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