Systematic GVB study of harmonic vibrational frequencies and dipole moment derivatives: The vinyl radical C2H3 and other simple molecules

1984 ◽  
Vol 80 (11) ◽  
pp. 5696-5702 ◽  
Author(s):  
Michel Dupuis ◽  
J. J. Wendoloski
Keyword(s):  
Dipole Moment ◽  
Vibrational Frequencies ◽  
Vinyl Radical ◽  
Simple Molecules

NO2 radical spectroscopy: Vibrational frequencies, dipole moment, and the energy difference between the bent and linear stationary points on the ground state potential surface

1989 ◽  
Vol 135 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Yaoming Xie ◽  
Randall D. Davy ◽  
Brian F. Yates ◽  
Charles P. Blahous ◽  
Yukio Yamaguchi ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Ground State ◽  
Potential Surface ◽  
Energy Difference ◽  
Vibrational Frequencies ◽  
Stationary Points ◽  
State Potential

A systematic theoretical study of harmonic vibrational frequencies: The ammonium ion NH4+and other simple molecules

1980 ◽  
Vol 73 (5) ◽  
pp. 2310-2318 ◽  
Author(s):  
Yukio Yamaguchi ◽  
Henry F. Schaefer
Keyword(s):  
Theoretical Study ◽  
Vibrational Frequencies ◽  
Ammonium Ion ◽  
Simple Molecules

Photochemical Evolution of Interstellar/Precometary Organic Material

1997 ◽  
Vol 161 ◽  
pp. 23-47 ◽  
Author(s):  
Louis J. Allamandola ◽  
Max P. Bernstein ◽  
Scott A. Sandford
Keyword(s):  
Origin Of Life ◽  
Building Blocks ◽  
Complex Species ◽  
Infrared Observations ◽  
Interstellar Ice ◽  
Polycyclic Aromatic ◽  
Ultraviolet Photolysis ◽  
The Origin Of Life ◽  
Simple Molecules ◽  
Complex Organic

AbstractInfrared observations, combined with realistic laboratory simulations, have revolutionized our understanding of interstellar ice and dust, the building blocks of comets. Since comets are thought to be a major source of the volatiles on the primative earth, their organic inventory is of central importance to questions concerning the origin of life. Ices in molecular clouds contain the very simple molecules H2O, CH3OH, CO, CO2, CH4, H2, and probably some NH3and H2CO, as well as more complex species including nitriles, ketones, and esters. The evidence for these, as well as carbonrich materials such as polycyclic aromatic hydrocarbons (PAHs), microdiamonds, and amorphous carbon is briefly reviewed. This is followed by a detailed summary of interstellar/precometary ice photochemical evolution based on laboratory studies of realistic polar ice analogs. Ultraviolet photolysis of these ices produces H2, H2CO, CO2, CO, CH4, HCO, and the moderately complex organic molecules: CH3CH2OH (ethanol), HC(= O)NH2(formamide), CH3C(= O)NH2(acetamide), R-CN (nitriles), and hexamethylenetetramine (HMT, C6H12N4), as well as more complex species including polyoxymethylene and related species (POMs), amides, and ketones. The ready formation of these organic species from simple starting mixtures, the ice chemistry that ensues when these ices are mildly warmed, plus the observation that the more complex refractory photoproducts show lipid-like behavior and readily self organize into droplets upon exposure to liquid water suggest that comets may have played an important role in the origin of life.

THE DIPOLE MOMENT INTERACTION OF BOUND EXCITONS IN HIGHLY EXCITED CdS

1985 ◽  
Vol 46 (C7) ◽  
pp. C7-221-C7-225
Author(s):  
Bao Qingcheng ◽  
Dai Rensong ◽  
Xu Xurong
Keyword(s):  
Dipole Moment ◽  
Moment Interaction

Search for an electric dipole moment of the neutron

1968 ◽  
Vol 95 (7) ◽  
pp. 470-476 ◽  
Author(s):  
P. Miller
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole
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