Results 251 to 260 of about 163,188 (284)

Spectroscopic and Geometrical Constants of Molecules

1998
The spectroscopic and geometrical constants of diatomic molecules and the most important parameters for simple polyatomic molecules (the fundamental vibrational frequencies, rotational and geometrical constants) are presented in this chapter.
Sergei V. Khristenko, Viatcheslav P. Shevelko, Alexander I. Maslov   +2 more
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Spectroscopically Determined Dielectric Constants for Various Esters

Industrial & Engineering Chemistry Research, 1997
Polarity of a solvent can be defined by the Onsager function or the Debye function, which both are functions of the static dielectric constant. Polarity has also been shown to be related to the solvatochromic shifts of the absorption and fluorescence spectra.
Marketta S. Uusi-Penttilä, Robert J. Richards, Béatrice A. Torgerson, Kris A. Berglund   +3 more
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Improved spectroscopic constants for the NO fundamental

Journal of Quantitative Spectroscopy and Radiative Transfer, 1977
Abstract A power series in the rotational index m has been fitted to the two fundamental ( 2 Π 1 2 − 2 Π 1 2 and 2 Π 3 2 − 2 Π 3 2 ) bands of nitric oxide and improved effective values of the spectroscopic constants B, D and H were obtained.
Louise Gray Young, Andrew T. Young
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Improved spectroscopic constants for I2 D 1Σu+

Chemical Physics Letters, 1995
Abstract The D-X transition of I 2 can be used to observe populations in vibrationally excited levels of I 2 (X). Levels in the range 20 ⩽ ν ″ ⩽ 50 are sensitively detected by exciting transitions that terminate on I 2 (D) ν ′ ⩽ 40. In the present work, spectroscopic studies of the lower vibrational levels of I 2 (D) were performed to facilitate ...
Melvin L. Nowlin, Michael C. Heaven
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II—Molecular Constants From Spectroscopic Data

Journal of Fluids Engineering, 1948
Abstract A brief discussion is given of how from the study of molecular spectra those molecular constants can be obtained that are of importance for the calculation of thermodynamic functions of gases in the ideal gaseous state. Subsequently, the existing data are reviewed for the specific gases at present under consideration by the ASME
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Theoretical spectroscopic constants of the GaN molecule

Theoretical Chemistry Accounts: Theory, Computation, and Modeling (Theoretica Chimica Acta), 1999
Fourth-order multi-reference coupled pair approximation (MRCPA-4) calculations were performed to predict spectroscopic constants of the gallium nitride (GaN) diatomic molecule. The calculations showed that the ground state is 3Σ− but that the 3Π state is low lying and separated from the former by 0.5 eV.
Yuji Mochizuki, Kiyoshi Tanaka
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Rovibrational energies and spectroscopic constants for H2O−Ng complexes

Journal of Molecular Modeling, 2014
In this work, rovibrational energies and spectroscopic constants for the water -Ng complexes (Ng = He, Ne, Ar, Kr and Xe) were calculated through two different approaches (by solving the Nuclear Schrödinger equation and by applying the Dunham's method) and using two different potential energy curves (PEC).
Wiliam F, da Cunha, Rhuiago Mendes, de Oliveira, Luiz F, Roncaratti, João B L, Martins, Geraldo M, e Silva, Ricardo, Gargano   +5 more
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Spectroscopic constants evaluated by numerical contact transformation

Spectrochimica Acta Part A: Molecular Spectroscopy, 1985
Abstract Following previous work a program has been written to evaluate spectroscopic information from anharmonic force-fields in linear triatomic molecules, using numerical contact transformations. The scheme is found to be accurate and convenient and is compared favourably with matrix diagonalization and with semi-classical methods.
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Universal scaling features of spectroscopic constants for diatomic systems

The Journal of Chemical Physics, 2006
Based on a new criterion that was proposed to search for the universality of spectroscopic constants for bound ground-state diatomics [R. H. Xie and P. S. Hsu, Phys. Rev. Lett. 96, 243201 (2006)], we have found universal scaling relations between spectroscopic constants of diatomic systems with s-, p-, and d-type valence-shell constituents.
Rui-Hua, Xie, Michael C, Heaven
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Optical constants of methyl-pentaphenylsilole by spectroscopic ellipsometry

Journal of Applied Physics, 2002
The optical properties of 1-methyl-1,2,3,4,5-pentaphenylsilole thin films grown on silicon substrate were investigated using spectroscopic ellipsometry (SE). Accurate refractive index n and extinction coefficient k, in the wavelength range of 250 to 800 nm, were determined.
Peng, Huajun, Liu, Zhengtong, Chen, Haiying, Ho, Jacob Y L, Tang, Benzhong, Wong, Man, Huang, Hochi, Kwok, Hoi Sing   +7 more
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