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- W2005259009 abstract "We report here boron-11 and hydrogen NMR measurements of the lifetime of BH4 units in molten LiBH4, with respect to hydrogen exchange. A well-resolved 11B pattern of B−H J-couplings yields a lower limit of 16 ms on the BH4 lifetime at 285 °C. Carr−Purcell−Meiboom−Gill multiple spin−echo measurements, both on 11B and hydrogen, find decay time constants of ∼2 s. Most or all of these decays can be attributed to boron and hydrogen T1 relaxation. Thus, any hydrogen exchange in molten LiBH4 is slower than our ∼1 s time scale. In solid LiBH4, H-exchange is expected to be even slower. This confirms that the diffusion of hydrogen in solid LiBH4 observed recently results from motion of intact BH4 units." @default.
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- W2005259009 date "2009-03-09" @default.
- W2005259009 modified "2023-09-27" @default.
- W2005259009 title "Exchange of Hydrogen Atoms Between BH<sub>4</sub> in LiBH<sub>4</sub>" @default.
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- W2005259009 doi "https://doi.org/10.1021/jp900768t" @default.
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