Infrared Spectra of SiH3C≡CH and SiD3C≡CH

Reeves, R. B.; Wilde, Richard E.; Robinson, Dean W.

doi:10.1063/1.1724846

Cited by 22 publications

(1 citation statement)

References 12 publications

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“…Silyl acetylene, Si&CCH, was first prepared by Ebsworth and Frankiss,l and its infra-red spectrum has been investigated?, 3 A previous study of its microwave spectrum4 indicated the C3v symmetry of the molecule and the positions of the silicon and carbon atoms, but left those of the hydrogen atoms open to doubt. In this investigation we have deduced the complete structure from rotational transitions of the following species : 28SiH312C12CHY 29SiH312C12CHY 30SiH312C12CH 28SiH313CWH, 28SiH 3 W W D , 28SiH2DWWH.…”

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confidence: 99%

Microwave spectrum and structure of silyl acetylene

Gerry¹,

Sugden²

1965

Trans. Faraday Soc.

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The microwave spectra of six isotopic forms of silyl acetylene, SiH3CCH, have been investigated, from which the C3, symmetry of the molecule is confirmed and the structural parameters found110" 12'. The spectrum of the most abundant isotopic form in the first excited state of its lowest frequency vibration has been studied, from which have been deduced the rotational, rotationvibration and centrifugal distortion constants, as well as the Coriolis coupling coefficient and an approximate frequency of the vibration.

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confidence: 99%

Microwave spectrum and structure of silyl acetylene

Gerry¹,

Sugden²

1965

Trans. Faraday Soc.

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2018

Vibrational Spectra of Organometallics

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Vinyl‐ and ethynylsilanes, ‐germanes and ‐stannanes. A new case of dissociative proton attachment

Mó

Yáñez

Gal

et al. 2002

J of Physical Organic Chem

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The gas‐phase protonation of H2CC(H)XH3 and HC≡CXH3 (X = Si, Ge, Sn) compounds was investigated through the use of high‐level density functional theory methods. The structures of neutral and protonated species were optimized at the B3LYP/6–31G* level of theory, while the final energies were obtained by single‐point B3LYP/6–311 + G(3df,2p) calculations. In the gas phase, vinyl‐ and ethynylsilanes, ‐germanes and ‐stannanes behave as carbon bases of moderate strength, with the only exception of vinylstannane, which is predicted to be about 20 kJ mol−1 more basic than ammonia. In all cases Cα protonation is the most favorable process. This protonation is followed by a C—X bond cleavage, so that the protonated form corresponds to a tightly bound complex between ethylene (or acetylene) and the corresponding XH3+ cation. This implies that dissociative proton attachments can be observed when the basic center is an atom of low electronegativity, provided that the other atoms bonded to it are much less electronegative than the basic center itself, and that the fragments formed as products of the dissociation are intrinsically stable. Copyright © 2002 John Wiley & Sons, Ltd.

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Infrared Spectra of SiH3C≡CH and SiD3C≡CH

Cited by 22 publications

References 12 publications

Microwave spectrum and structure of silyl acetylene

Microwave spectrum and structure of silyl acetylene

References

Vinyl‐ and ethynylsilanes, ‐germanes and ‐stannanes. A new case of dissociative proton attachment

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