Laboratory Rotational Spectra of Silyl Isocyanide

Nitrogen Quadrupole Coupling in the Microwave Ground State Spectra of Tertiary Butyl Isocyanide and Phenyl Isocyanide

Z. Naturforsch. 41 a, 1302-1306 (1986); received August 7, 1986 The microwave ground state spectra of tert.-butyl isocyanide, (CH3)3CNC, and phenyl isocyanide, C6H 5NC, have been measured by microwave Fourier transform spectroscopy in the region 5.0 to 8.0 GHz and analysed for nuclear quadrupole hyperfine splitting due to ‘*N. The nuclear quadrupole coupling constants are shown to be in accorda...

Molecular Rotational Spectra

Rotational spectra of diatomic molecules measured in the high-precision experiments are analyzed. Such a spectrum is usually fitted by an 8th order polynomial in spin. In fact, from the theoretical point of view, the rotational spectrum is expected to be a smooth function of spin. Thus, fitting the rotational spectrum in terms of a low order polynomial in spin seems to be justified. However, th...

Mixed Spectra and Rotational Symmetry

High-Temperature Rotational Transitions of Water in Sunspot and Laboratory Spectra

Assignments are presented for spectra of hot water obtained in absorption in sunspots (T approximately 3000&deg;C and 750 </= nu; </= 1010 cm-1) and in emission in the laboratory (T approximately 1550&deg;C and 370 </= nu; </= 930 cm-1). These assignments are made using variational nuclear motion calculations based on a high-level ab initio electronic surface, with allowance for both adiabatic ...

Assignment and Analysis of Complex Rotational Spectra

Rotational spectra of even simple molecules can pose serious interpretational difficulties, especially in the high-J conditions of spectroscopy in the environmentally relevant mm-wave region. In recent years several useful techniques for dealing with such spectra in the laboratory have become apparent. These include the choice of the most suitable experimental tools, more detailed understanding...