Microwave spectrum of ketene

Preparation and the Microwave and Infrared Spectra of Vinyl Ketene

Vinyl ke t ene (1 ,3-butadienel -one) has been synthesized b y v a c u u m pyrolysis of 3-butenoic 2-butenoic a n h y d r i d e . The microwave and inf rared spectra of v inyl ke tene in t h e gas phase a t room t e m p e r a t u r e h a v e been s tudied. The f rans ro tamer has been identif ied, a n d t h e spectroscopic cons t an t s were found t o be A = 39571(48) MHz, B = 2392.9252(28) MHz...

Microwave Spectrum of y-Thiobutyrolactone

The microwave spectrum of y-thiobutyrolactone has been observed and measured in the vibrational ground state and in several excited states of the ring-bending and ring-twisting modes. From the value of the /ic component of the dipole moment and inertial-defect considerations the ring skeleton was shown to be non-planar. The average intensity ratio for the rotational transitions between the grou...

The microwave spectrum of neurotransmitter serotonin.

A laser ablation device in combination with a molecular beam Fourier-transform microwave spectrometer has allowed the observation of the rotational spectrum of serotonin for the first time. Three conformers of the neurotransmitter have been detected and characterized in the 4-10 GHz frequency range. The complicated hyperfine structure arising from the presence of two (14)N nuclei has been fully...

Microwave spectrum and molecular structure of PNO

A Convenient Ketene Generator

A simple apparatus for the preparation of ketene (CH,--C =O) from acetone vapor is described by Ott, Schr6ter, and Packendofff (1). A more rigid and convenient apparatus has been designed and used by the writer (Fig. 1). Pyrex glass used in both the filamentsupport and bulb reduces the possibility of cracking or breaking. The removable filament-support makes it possible to replace the filament ...