scholarly journals Hydrogen Cyanide Formation in the Gas-phase Radiolysis of Mixtures of Nitrogen and Ethylene

1968 ◽  
Vol 41 (9) ◽  
pp. 2192-2193 ◽  
Author(s):  
Takefumi Oka ◽  
Ryo Kato ◽  
Shin Sato ◽  
Shoji Shida
Keyword(s):  
Gas Phase ◽  
Hydrogen Cyanide

Spectroscopic investigations of hydrogen bonding interactions in the gas phase. IX. Vibrational satellites in the rotational spectrum of the hydrogen-bonded homodimer HCN • • • HCN

1985 ◽  
Vol 399 (1817) ◽  
pp. 377-390 ◽  
Keyword(s):  
Gas Phase ◽  
Ground State ◽  
Hydrogen Cyanide ◽  
Spectroscopic Constants ◽  
Rotational Spectrum ◽  
Optimum Conditions ◽  
Frequency Range ◽  
Hydrogen Bonding Interactions ◽  
Microwave Spectrometer ◽  
Simulation Of Spectra

The rotational spectrum of the hydrogen cyanide dimer has been observed in the frequency range 26-40 GHz by using a Stark-modulated microwave spectrometer. Although the spectrum is very weak, even under optimum conditions, it has been possible to assign vibrational satellites in the v β progression based on the ground state and in the v β progression based on v σ ═ 1 with the aid of the computer simulation of spectra and the ground-state spectroscopic constants. The spectroscopic constants now available for the hydrogen cyanide dimerare summarized as follows: (HC 14 N) 2 (DC 14 N) 2 (HC 15 N) 2 v β ═ 1 ← 0/cm -1 35±5 30±5 35±5 v σ ═ 1 ← 0/cm -1 101 ─ ─ B o /MHz 1745.80973(50) 1661.18(26) 1684.28825(25) D J /kHz 2.133(30) (1.873) 1.900(30) r c. m ./nm 44.496 ─ 44.499 K σ /(Nm -1 ) 8.14 ─ 8.51 α β /MHz ─20.07 (2) ─17.73 (27) ─18.74 (9) γ β /MHz 0.266 (4) 0.242 (36) 0.250 (17) q β /MHz 5.33 (4) 5.44 (13) 5.15 (10) α σ /MHz (31.44) ─ ─

Cyclic Imides. Preparation of Silylphthalimides and Characterization by Infrared and Mass Spectrometry

1971 ◽  
Vol 49 (7) ◽  
pp. 1011-1018 ◽  
Author(s):  
A. F. Janzen ◽  
E. A. Kramer
Keyword(s):  
Gas Phase ◽  
Hydrogen Cyanide ◽  
Chloroform Solution ◽  
Spectroscopic Studies ◽  
Major Effect ◽  
Mechanism Of Formation ◽  
Silicon Ions ◽  
Silyl Groups ◽  
Cyclic Imides ◽  
Electron Donation

A series of silylphthalimides containing silicon substituents —H, —CH3, —C2H5, —CH2CH=CH2, and —C6H5 have been prepared and characterized. The compounds are N-silylated and found to be monomeric in the liquid and gas phase. The i.r. spectroscopic studies in dilute (10−1 M) chloroform solution showed a decrease (approximately 40 cm−1) in the carbonyl stretching frequency on silylation, but relatively small changes (± 7 cm−1) on changing silicon substituents. The major effect appears to be electron donation by silyl groups. The N15 isotopomers were prepared and C—N and Si—N vibrations identified.Mass spectrometric studies of methyl- and phenylsilylphthalimides, including N15 substitution, are reported. A possible mechanism of formation of methyl- and phenylbiphenylene silicon ions, involving loss of methyl or phenyl, carbon dioxide, and hydrogen cyanide, is suggested.

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