Communications: Chain and double-ring polymeric structures: Observation of AlnH3n+1− (n = 4–8) and Al4H14−

Li, Xiang; Grubisic, Andrej; Bowen, Kit H.; Kandalam, Anil K.; Kiran, Boggavarapu; Ganteför, Gerd; Jena, Puru

Communications: Chain and double-ring polymeric structures: Observation of AlnH3n+1− (n = 4–8) and Al4H14−

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Datum

2010

Autor:innen

Li, Xiang

Grubisic, Andrej

Bowen, Kit H.

Kandalam, Anil K.

Kiran, Boggavarapu

Ganteför, Gerd

Jena, Puru

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

The Journal of Chemical Physics. 2010, 132(24), 241103. ISSN 0021-9606. eISSN 1089-7690. Available under: doi: 10.1063/1.3458912

Zusammenfassung

A pulsed arc discharge source was used to prepare gas-phase, aluminum hydride cluster anions, AlnHm−, exhibiting enhanced hydrogen content. The maximum number of hydrogen atoms in AlnHm− species was m = 3n+1 for n = 5–8, i.e., AlnH3n+1−, and m = 3n+2 for n = 4, i.e., Al4H14−, as observed in their mass spectra. These are the most hydrogen-rich aluminum hydrides to be observed thus far, transcending the 3:1 hydrogen-to-aluminum ratio in alane. Even more striking, ion intensities for AlnHm− species with m = 3n+1 and m = 3n+2 hydrogen atoms were significantly higher than those of nearby AlnHm− mass peaks for which m<3n+1, i.e., the ion intensities for AlnH3n+1− and for Al4H14− deviated from the roughly bell-shaped ion intensity patterns seen for most AlnHm− species, in which m ranges from 1 to 3n. Calculations based on density functional theory showed that AlnH3n+1− clusters have chain and/or double-ring polymeric structures.

Fachgebiet (DDC)

530 Physik

Schlagwörter

aluminium compounds, density functional theory, mass spectra, negative ions, polymer structure, polymers

Zitieren

ISO 690

LI, Xiang, Andrej GRUBISIC, Kit H. BOWEN, Anil K. KANDALAM, Boggavarapu KIRAN, Gerd GANTEFÖR, Puru JENA, 2010. Communications: Chain and double-ring polymeric structures: Observation of AlnH3n+1− (n = 4–8) and Al4H14−. In: The Journal of Chemical Physics. 2010, 132(24), 241103. ISSN 0021-9606. eISSN 1089-7690. Available under: doi: 10.1063/1.3458912

BibTex

@article{Li2010-06-28Commu-12481,
  year={2010},
  doi={10.1063/1.3458912},
  title={Communications: Chain and double-ring polymeric structures: Observation of AlnH3n+1− (n = 4–8) and Al4H14−},
  number={24},
  volume={132},
  issn={0021-9606},
  journal={The Journal of Chemical Physics},
  author={Li, Xiang and Grubisic, Andrej and Bowen, Kit H. and Kandalam, Anil K. and Kiran, Boggavarapu and Ganteför, Gerd and Jena, Puru},
  note={Article Number: 241103}
}

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