A comprehensive anharmonic vibrational analysis of isotopic ketenes has been performed
on the basis of a complete ab initio quartic force field constructed by means of second‐order …

The millimeter-wave rotational spectrum of ketene (H 2 C= C= O) has been collected and
analyzed from 130 to 750 GHz, providing highly precise spectroscopic constants from a …

A variational quantum mechanical protocol is presented for the computation of rovibrational
energy levels of semirigid molecules using discrete variable representation of the Eckart …

A new Stark-modulated submillimeter-wave spectrometer is described. This spectrometer
has been used to analyze the microwave spectrum of three isotopomers (heavy atoms) of …

The general harmonic force field (GHFF) of ketene has been determined through a joint
empirical-ab initio investigation. Perturbations in the infrared spectra of all isotopic species …

The four A 1-species fundamentals of ketene have been analyzed at a resolution of 0.05
cm− 1. Assignments are made for J≤ 36 and K a≤ 7, and asymmetry splittings observed for …

A thorough investigation of the infrared spectra in the gas phase and polycrystalline films of
normal and 10 B enriched samples of B 2 H 6 and B 2 D 6 has been made with a resolution …

Sufficient data are now available to study trends in the spectra of molecules on substitution
with progressively heavier atoms down the periodic table. We have chosen the carbonyls …

The propargyl radical (CH2C≡ CH) produced by the ArF excimer laser photolysis of allene
was observed by time‐resolved infrared diode laser spectroscopy. More than one hundred …

Abstract a-type rotational transitions of molecules in the vibrational ground state of
thioketene, H2C= C= S, have been measured in the millimeter wavelength region. The …