Infrared spectrum of the silicon hydride cation SiH7PLU
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Infrared spectrum of the silicon hydride cation SiH7PLU. / Cao, Yibin; Choi, Jong H.; Haas, Bernd Michael; Johnson, Matthew S.; Okumura, Mitchio.
Proceedings of SPIE - The International Society for Optical Engineering. Publ by Int Soc for Optical Engineering, 1993. s. 326-331 (Proceedings of SPIE - The International Society for Optical Engineering, Bind 1858).Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
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TY - GEN
T1 - Infrared spectrum of the silicon hydride cation SiH7PLU
AU - Cao, Yibin
AU - Choi, Jong H.
AU - Haas, Bernd Michael
AU - Johnson, Matthew S.
AU - Okumura, Mitchio
PY - 1993/12/1
Y1 - 1993/12/1
N2 - Silanium ions are an important class of hypervalent molecules, and the determination of their structure will yield insights into the nature of nonclassical bonding and provide a contrast to the bonding in carbonium ions. We report the infrared spectrum of the mass-selected silicon hydride cluster ion 28SiH7+, detected by vibrational predissociation spectroscopy. Silanium ions were formed in a pulsed high pressure glow discharge and cooled by the subsequent supersonic expansion. Photodissociation spectra were obtained using a tandem time-of-flight mass spectrometer: SiH7+ ions were mass-selected and excited by a tunable infrared laser. The resulting photofragments were detected using a reflectron as a mass analyzer. We observed a vibrational band at 3865 cm-1, which was the only one observed from 3500 cm-1 to 4200 cm-1. This result suggests that the molecule might form a symmetric complex with the structure H 2·SiH3+·H2, in contrast to the species CH 7+, which has the structure CH5+·H2.
AB - Silanium ions are an important class of hypervalent molecules, and the determination of their structure will yield insights into the nature of nonclassical bonding and provide a contrast to the bonding in carbonium ions. We report the infrared spectrum of the mass-selected silicon hydride cluster ion 28SiH7+, detected by vibrational predissociation spectroscopy. Silanium ions were formed in a pulsed high pressure glow discharge and cooled by the subsequent supersonic expansion. Photodissociation spectra were obtained using a tandem time-of-flight mass spectrometer: SiH7+ ions were mass-selected and excited by a tunable infrared laser. The resulting photofragments were detected using a reflectron as a mass analyzer. We observed a vibrational band at 3865 cm-1, which was the only one observed from 3500 cm-1 to 4200 cm-1. This result suggests that the molecule might form a symmetric complex with the structure H 2·SiH3+·H2, in contrast to the species CH 7+, which has the structure CH5+·H2.
UR - http://www.scopus.com/inward/record.url?scp=0027727029&partnerID=8YFLogxK
M3 - Article in proceedings
AN - SCOPUS:0027727029
SN - 0819410853
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 326
EP - 331
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Int Soc for Optical Engineering
ER -
ID: 236122454