2013
DOI: 10.1039/c2cp43773b
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Infrared spectrum of the disilane cation (Si2H6+) from Ar-tagging spectroscopy

Abstract: The infrared spectrum of the disilane cation, Si 2

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Cited by 14 publications
(38 citation statements)
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“…2), degree of hydrogen passivation (y), substitution of functional groups, doping with heteroatoms, adsorption and hybrid formation, with the major goal being to adjust and tailor their chemical and optical properties in a controlled fashion. [15,22,23] Initial results for Si 2 H 6 + and Si 2 H 7 + cations were reported recently, [15,22] and herein we present those obtained for Si 3 H 8 + . The vibrational spectrum of Si 3 H 8 + is obtained by the sensitive technique of IR photodissociation (IRPD) of mass selected Si 3 H 8 + -Ar clusters synthesized in a supersonic plasma expansion of silane diluted in a rare gas mixture.…”
Section: Introductionsupporting
confidence: 52%
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“…2), degree of hydrogen passivation (y), substitution of functional groups, doping with heteroatoms, adsorption and hybrid formation, with the major goal being to adjust and tailor their chemical and optical properties in a controlled fashion. [15,22,23] Initial results for Si 2 H 6 + and Si 2 H 7 + cations were reported recently, [15,22] and herein we present those obtained for Si 3 H 8 + . The vibrational spectrum of Si 3 H 8 + is obtained by the sensitive technique of IR photodissociation (IRPD) of mass selected Si 3 H 8 + -Ar clusters synthesized in a supersonic plasma expansion of silane diluted in a rare gas mixture.…”
Section: Introductionsupporting
confidence: 52%
“…[16] However, in addition to the most stable H 3 SiÀSiH 3 + structure with D 3d symmetry, a bridged structure with a 3c-2e bond of the type [H 2 Si À H À SiH 3 ] + was predicted to be only around 15 kJ mol À1 less stable. [22] The most stable structure of protonated disilane, Si 2 H 7 + , indeed features such a nonlinear 3c-2e bond, which is generated either by addition of SiH 4 to SiH 3 + or by proton insertion into the SiÀSi bond of Si 2 H 6 . [15] The distinct IR signature of this symmetric SiÀHÀSi bridge was inferred from IRPD of Si 2 H 7 + -Rg with Rg = Ne and Ar through the detection of its characteristic intense asymmetric Si À H À Si stretching mode at approximately 1940 cm À1 .…”
Section: Introductionmentioning
confidence: 98%
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“…For this purpose, the octopole is filled with N 2 up to 10 À5 mbar, resulting in collisions with B10 eV collision energy in the laboratory frame. Recent applications of this IRPD approach of tagged ions in the Berlin laboratory include hydrocarbon ions, [48][49][50][51][52][53][54][55][56][57] silicon-containing ions, [58][59][60] and biological molecules and their hydrates. [61][62][63][64][65][66] 2.3.2.…”
Section: Experimental Methods For the Neutral Ai Moleculesmentioning
confidence: 99%
“…Also methods based on the tagging approach for the IR photodissociation of mass selected clusters have been recently applied to solve structural problems regarding various Si x H y + ions. 33,34 Here we report the IRMPD spectrum of a simple β-trimethylsilyl-substituted carbocation, namely, the one that is obtained by protonation of allyl-trimethylsilane, (CH 3 ) 3 Si-CH 2 -CH=CH 2 . The protonation is effected in the cell of an Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer by the t-butyl cation, ((CH 3 ) 3 C + ) a mild protonating agent (Eq.…”
mentioning
confidence: 99%