Astronomical Vibrational Spectroscopy

Abstract

The sections in this article are Introduction Astronomical Objects Interstellar Clouds and Evolution Star Formation Region Late‐Type Stars and Planetary Nebula Cosmic Abundance Line Width in Astronomical Objects Interstellar Molecules Detected Molecules Molecular Energy Levels and Vibration–Rotation Transitions Vibrational Transition Moment Line Intensity and Molecular Abundance Infrared Astronomy Brief History Infrared Detectors Spectrometers Infrared Observations of Gas‐Phase Molecules H 2 H 3 + Carbon and Oxygen Compounds Sulfur Compounds Infrared Observations of Solid‐Phase Species Interstellar Dust Small Molecules in Interstellar Dust Mantle Unidentified Infrared Bands ( UIR s ) Carriers for Unidentified Infrared Bands Future Prospects Nonpolar Molecules Negative Ions Infrared Lasers Acknowledgments

Structural, dielectric and transport properties of NaxFe1/2Mn1/2O2 (x = 1 and 2/3)

“…The distortion vibration assigned to the ν 4 (F 1u ) band observed at 253 cm −1 corroborates the presence of octahedra MO 6 in sample 1. The deformation vibration ν 5 (F 2g ) observed at 155 cm −1 in the compound NaFe 1/2 Mn 1/2 O 2 , 30 can be accounted for in terms of the fact that the vibrational studies at room temperature confirm the octahedral environment MO 6 (M = Fe, Mn) observed in the structural study for these materials.…”