Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 1970-1979 by Issue Date
Now showing results 1-20 of 3443
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ACETYLENE SPECTRA OBSERVED IN N-TYPE STARS: A LABORATORY STUDY
Rinsland, C. P.; Rao, K. Narahari; Baldacci, A.; Ciorcianni, S. ( 1979 )The molecule acetylene has been recently detected from infrared spectra of several cool carbon $stars.^{1,2}$ Since $C_{2}H_{2}$ is a useful probe of the chemical composition and temperature structure of the upper atmospheres ... -
HIGH-RESOLUTION INFRARED SPECTRA OF $\nu_{3}$ BAND OF METHYL FLUORIDE
Worchesky, T. L.; Ritter, K. J.; Sattler, J. P.; Riessler, W. A. ( 1979 )The infrared spectrum of methyl fluoride has been measured from 1027 to $1062 cm^{-1}$ with a PbSnTe diode laser. This allowed piecewise measurement of the $Q_{P}$ branch and the $Q_{R}$ branch from J = 1 to J = 10 and ... -
VIBRATIONAL ENERGY TRANSFER FROM THE v=1 LEVEL OF HBr TO THE ($00^{\circ} 1$) LEVEL OF $CO_{2}$ AND $N_{2}O$, AND TO THE v=1 LEVEL OF $CO,NO,N_{2}$ AND $O_{2}$
Seoudi, B.; Doyennette, L.; Margottin-Maclou, M.; Henry, L. ( 1979 )Rate constants for the vibrational energy transfer process : \[ HBr(v=1) + M(v=0\ or\ 00^{\circ} 0) \leftrightarrow HBr(v=0) + M(v=1 or 00^{\circ} 1) + \Delta E \] with $\Delta E =hc \Delta v = hc(\nu_{HBr} - \nu_{M})$, ... -
LASER RAMAN STUDY OF THE THERMAL REARRANGEMENT OF METHYL P-DIMETHYLAMINOBENZENESULFONATE IN SOLID STATE
Dwarakanath, K.; Smith, R. V.; Prasad, Paras N. ( 1979 )Methyl-p-dimethyl aminobenzenesul fonate (MSE), a stable compound in solution, slowly undergoes a rearrangement in the solid state into p-trimethylammoniumbenzenesulfonate zwetterion $(ZWT)^{1}$. The rate of this lattice ... -
VIBRATIONAL RAMAN OPTICAL ACTIVITY
Hug, W.; Surbeck, H.; Cuony, B. ( 1979 )The measurement of vibrational optical activity and its use as an analytical tool has been a longtime goal in spectroscopy and stereochemistry. Recent instrumental developments in our laboratory have made possible the rapid ... -
IDENTIFICATION OF TWO CONFORMERS FOR A SATURATED SIX-MEMBERED-RING MOLECULE: $\delta$-VALEROLACTONE
Philip, Thomas; Cook, Robert L.; Malloy, Thomas B., Jr. ( 1979 )Prompted by Molecular Mechanics calculations by Allinger and $coworkers,^{1}$ we undertook a study of the microwave spectrum of $\delta$-valerolactone. In agreement with their calculations, we have found two conformers ... -
ANALYSIS OF $2\nu_{1}$ OF HDSe
Gillis, James R.; Edwards, T. H. ( 1979 )We have run a high resolution infrared absorption spectrum of $2\nu_{1}$, the Se-H stretch overtone of HDSe, and assigned a total of approximately 300 transitions among the isotopic species containing Se isotopes 82, 80, ... -
OBSERVATION OF HIGHLY EXCITED VIBRATION OVERTONES $(\Delta = 6,7)$ OF NORMAL-, BRANCHED- AND CYCLO-ALKANES BY THERMAL LENSING SPECTROSCOPY
Fang, Howard L.; Swofford, Robert L. ( 1979 )Thermal lensing spectroscopy (TLS) is a sensitive absorption technique based on the measurement of the transverse refractive Index profile in a laser-illuminated liquid sample. Recently, TLS has been applied to the study ... -
POLARIZED LUMINESCENCE OF CRYSTALLINE $Cs_{2}NaYCl_{6}:Pr^{3+}$
Morley, J. P.; Faulkner, Thomas R.; Richardson, F. S. ( 1979 )Magnetic field induced circularly polarized luminescence (MCPL) and total luminescence (TL) spectra are reported for the cubic crystal system, $Cs_{2}NaYCl_{6}:Pr^{3+}(25%)$, over the temperature range 4.2-298 K. In this ... -
RATE CONSTANT OF VIBRATIONAL TRANSFER FROM THE $nu_{3}$ MODE TO THE $\nu_{1}$ AND $\nu_{2}$ MODES OF $N_{2}O$
Alamichel, C.; Picard-Bersellini, A. ( 1979 )In previous publications (1,2) one of us has given experimental results about vibroluminescence of $N_{2}O$ excited by activated nitrogen. In the present work we apply to the preceding results the Lawrence Livermore kinetic ... -
ELECTRONIC STRUCTURE CALCULATIONS FOR $CH_{3}OH$, $CH_{3}O$, $CH_{2}O$, and CHO
Adams, George F.; Bent, G. D.; Purvis, G. D.; Bartlett, R. J. ( 1979 )Fourth-order, many-body perturbation theory (MBPT) calculations, including all double-excitation diagrams and single-excitation diagrams at fourth-order, have been used to predict the electronic structure of methanol ... -
ELECTRONIC STRUCTURE CALCULATIONS FOR METHYLENE AMIDOGEN, $CH_{2}N$
Adams, George F.; Bent, G. D.; Purvis, G. D.; Bartlett, R. J. ( 1979 )The electronic structure of the methylene amidogen radical, $CH_{2}N$, has been studied using many-body perturbation theory. Optimization of the structural parameters predicts $R_{e}^{CN} = 2.322 b, R_{e}^{CH} = 2.017$ b, ... -
MBPT CALCULATIONS OF THE JAHN-TELLER AND SPIN-ORBIT SPLITTING AND SPIN HAMILTONIAN PARAMETERS OF METHOXY
Bent, G. D.; Adams, George F.; Bartlett, R. J.; Purvis, G. D. ( 1979 )Methoxy ($CH_{3}O$) has a degenerate ground state In $C_{3}v$ symmetry. In accordance with the Jahn-Teller theorem, this radical distorts to a $C_{S}$ Symmetry where it lies a nondegenerate ground state. The degenerate ... -
REEXAMINATION OF THE DISCRETE REGION OF THE UV FLUORESCENCE SYSTEM D + X IN $I_{2}$
Sur, Abha; McKeever, Mark R.; Tellinghuisen, Joel ( 1979 )Recent Fourier transform spectroscopic work on the $B\leftarrow X$ fluorescence spectrum of $I_{2}$ has yielded greatly improved constants for high $v^{\prime\prime}$ levels of the ground state, $X^{1}\Sigma^{+}_{g} -^{1}$ ... -
THE THEORY OF VIBRATIONAL CIRCULAR DICHROISM. I. TECHNIQUES FOR THE CALCULATION OF ROTATIONAL STRENGTHS OF VIBRATIONAL TRANSITIONS
Marcott, Curtis; Ferber, Steven D.; Moscowitz, Albert; Overend, John ( 1979 )The calculation of rotational strengths of vibrational transitions requires the evaluation of matrix elements of the electric and magnetic dipole-moment operators and, for this purpose, it is necessary first to solve the ... -
THE THEORY OF VIBRATIONAL CIRCULAR DICHROISM. II. APPLICATION TO SIMPLE CHIRAL MOLECULES
Ferber, Steven D.; Marcott, Curtis; Moscowitz, Albert; Overend, John ( 1979 )The techniques described in the previous paper have been applied to a number of simple chiral molecules including diemethylamino-2-propanol, the allenes, adamantanone, methylcyclohexanone, etc. In order to satisfactorily ... -
INFRARED AND RAMAN SPECTRA OF TRICHLOROSILYLISOCYANATE AND TRICHLOROSILYLISOTHIOCYANATE
Gerson, D. J.; Durig, J. R. ( 1979 )The infrared and Raman spectra of gaseous and solid $SiCl_{3} NCO$ and $SiCl_{3}NCS$ have been obtained over the frequency range of 20 to $4000 cm^{-1}$. The Raman spectra of the liquids have also been recorded. Assignments ... -
INFRARED EMISSION OF THE NH FUNDAMENTAL
Hansen, Peter; Esplin, Mark P.; Sakai, Hajime ( 1979 )Using the technique of Fourier spectroscopy in conjunction with a large Pfund cell $arrangement,^{1}$ we observed the vibrational fundamental transition (DLnU = 1) of the NH radicals emitted in the spectral range of $2800 ... -
VIBRATIONAL STUDIES OF AMORPHOUS AND CRYSTALLINE SbSBr
Minabe, Fae Y.; Exarhos, Gregory J. ( 1979 )The $A_{v}B_{vi}C_{vii}$ family of ferroelectric materials includes the highly colored species SbSBr and SbSI which may be prepared in both crystalline and amorphous phases. A vibrational study of crystalline and glassy ... -
MULTICONFIGURATION EFFECTIVE POTENTIAL CALCULATION OF THE SPECTROSCOPIC CONSTANTS OF $Pb_{2}$
Ewig, C. S. ( 1979 )A theory of general effective potentials applicable to MCSCF calculations is outlined. As a test case, the ground state of $Pb_{2}$ has been studied, both with and without relativistic corrections. Ab initio values of ...