Charged Si9 Clusters in Neat Solids and the Detection of [H2Si9]2− in Solution: A Combined NMR, Raman, Mass Spectrometric, and Quantum Chemical Investigation

Lorenz J. Schiegerl, Antti J. Karttunen, Jan Tillmann, Sebastian Geier, Gabriele Raudaschl-Sieber, Markus Waibel, Thomas F. Fässler*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

12 Sitaatiot (Scopus)
80 Lataukset (Pure)

Abstrakti

Polyanionic silicon clusters are provided by the Zintl phases K4Si4, comprising [Si4]4− units, and K12Si17, consisting of [Si4]4− and [Si9]4− clusters. A combination of solid-state MAS-NMR, solution NMR, and Raman spectroscopy, electrospray ionization mass spectrometry, and quantum-chemical investigations was used to investigate four- and nine-atomic silicon Zintl clusters in neat solids and solution. The results were compared to 29Si isotope-enriched samples. 29Si-MAS NMR and Raman shifts of the phase-pure solids K4Si4 and K12Si17 were interpreted by quantum-chemical calculations. Extraction of [Si9]4− clusters from K12Si17 with liquid ammonia/222crypt and their transfer to pyridine yields in a red solid containing Si9 clusters. This compound was characterized by elemental and EDX analyses and 29Si-MAS NMR and Raman spectroscopy. Charged Si9 clusters were detected by 29Si NMR in solution. 29Si and 1H NMR spectra reveal the presence of the [H2Si9]2− cluster anion in solution.

AlkuperäiskieliEnglanti
Sivut12950-12955
Sivumäärä6
JulkaisuAngewandte Chemie - International Edition
Vuosikerta57
Numero39
DOI - pysyväislinkit
TilaJulkaistu - 24 syyskuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki Sukella tutkimusaiheisiin 'Charged Si<sub>9</sub> Clusters in Neat Solids and the Detection of [H<sub>2</sub>Si<sub>9</sub>]<sup>2−</sup> in Solution: A Combined NMR, Raman, Mass Spectrometric, and Quantum Chemical Investigation'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

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