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The existence of [μ‐HSi4]3− in liquid ammonia solutions is confirmed by 1H and 29Si NMR experiments. Both NMR and quantum chemical calculations reveal that the H atom bridges two Si atoms of the [Si4]4− cluster, contrary to the expectation that it is located at one vertex Si of the tetrahedron. The calculations also indicate that in the formation of [μ‐HSi4]3−, protonation is driven by a high charge...
Der unzweifelhafte Nachweis des schwer zu fassenden [HSi9]3−‐Anions gelang in flüssigem Ammoniak mithilfe verschiedenster 29Si‐ und 1H‐NMR‐Experimente, inklusive Chemical‐Exchange‐Saturation‐Transfer(CEST)‐Experimente. Charakteristische Multiplett‐Aufspaltungen sowohl bei den 29Si‐ als auch bei den 1H‐Signalen zusammen mit den CEST‐Messungen und eine teilweise reduzierte 1H,29Si‐Kopplungskonstante...
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