DERIVATIVES OF MONOGERMANE: PART I. THE VIBRATION–ROTATION SPECTRA OF GERMYL FLUORIDE AND BROMIDE

1962 ◽  
Vol 40 (4) ◽  
pp. 579-589 ◽  
Author(s):  
J. E. Griffiths ◽  
T. N. Srivastava ◽  
M. Onyszchuk
Keyword(s):  
Harmonic Oscillator ◽  
Infrared Absorption ◽  
Thermodynamic Functions ◽  
Low Frequency ◽  
Rotational Constant ◽  
Rigid Rotator ◽  
Harmonic Oscillator Model ◽  
Infrared Absorption Spectra ◽  
Vibration Rotation ◽  
Derivatives Of

The vibration–rotation infrared absorption spectra of germyl fluoride and bromide have been observed. All of the fundamentals in GeH3F were located, and the rotational structure of the E-type bands were resolved and analyzed. The low-frequency band, ν3(a1), in GeH3Br was not observed but an estimate of its position was made from the frequencies of the combination band ν3 + ν6 and of ν6. The rotational constant A″ and the Coriolis constants ζ4, ζ5, and ζ6 were calculated for both molecules, and agreement with microwave A″ values was satisfactory. Thermodynamic functions based upon a rigid-rotator, harmonic-oscillator model have been evaluated for germyl fluoride and bromide.

scholarly journals Infrared Absorption Spectra of Derivatives of Glucuronic Acid. II

1962 ◽  
Vol 82 (4) ◽  
pp. 578-583 ◽  
Author(s):  
Yoshihiro Nitta ◽  
Junji Ide ◽  
Atsushi Momose ◽  
Yasuo Nakajima
Keyword(s):  
Absorption Spectra ◽  
Infrared Absorption ◽  
Glucuronic Acid ◽  
Infrared Absorption Spectra ◽  
Derivatives Of

Infrared spectra of 2,4-dinitro and 2,6-dinitroaniline derivatives

1982 ◽  
Vol 47 (4) ◽  
pp. 1100-1111 ◽  
Author(s):  
Jaroslav Majer ◽  
Vladimír Kadeřábek
Keyword(s):  
Absorption Spectra ◽  
Infrared Spectra ◽  
Infrared Absorption ◽  
Point Of View ◽  
Amino Groups ◽  
Infrared Absorption Spectra ◽  
Derivatives Of

Infrared absorption spectra of N-substituted derivatives of 2,4-dinitro- and 2,6-dinitroanilines have been measured and interpreted from the point of view of bond and sterical interactions of the substituted amino groups with the both nitro groups.

Schwingungsspektren und Thermodynamische Funktionen von PF3, PCl3, PBr3, P J3, PF2Cl, PF2Br, PF2J, PFCl2, PFBr2, PCl2Br, PCl2J, PClBr2, PClJ2, PBrJ2, PBr2J, PFClBr, AsCl2Br und AsClBr2

1968 ◽  
Vol 23 (5) ◽  
pp. 588-594 ◽  
Author(s):  
A. Müller ◽  
E. Niecke ◽  
B. Krebs ◽  
O. Glemser
Keyword(s):  
Harmonic Oscillator ◽  
Infrared Spectra ◽  
Thermodynamic Functions ◽  
Frequency Data ◽  
Rigid Rotator ◽  
Temperature Range

The complete Raman and infrared spectra of PF2Cl, PF2Br, PFCl2 and PFBr2 are reported. The frequency data for several mixed phosphorus and arsenic halides (see title) given in the literature are revised and completed. Assignments are made for all spectra. Thermodynamic functions in the temperature range 200—2000 °K are calculated for all molecules, assuming the harmonic oscillator — rigid rotator approximation.

scholarly journals Infrared Absorption Spectra of Derivatives of Glucuronic Acid. III

1962 ◽  
Vol 82 (6) ◽  
pp. 790-794 ◽  
Author(s):  
Yoshihiro Nitta ◽  
Junji Ide ◽  
Atsushi Momose ◽  
Minoru Kawada
Keyword(s):  
Absorption Spectra ◽  
Infrared Absorption ◽  
Glucuronic Acid ◽  
Infrared Absorption Spectra ◽  
Derivatives Of

Calculation of thermodynamic functions of halogen derivatives of silane and germane

1984 ◽  
Vol 49 (5) ◽  
pp. 1211-1227 ◽  
Author(s):  
Michal Bureš ◽  
Čestmír Černý
Keyword(s):  
Thermodynamic Functions ◽  
Atmospheric Pressure ◽  
Ideal Gas ◽  
Critical Examination ◽  
Rigid Rotator ◽  
Relative Enthalpy ◽  
Harmonic Oscillator Approximation ◽  
Experimental Values ◽  
Derivatives Of ◽  
The Ideal

Molar heat capacity, absolute entropy, relative enthalpy and relative Gibbs energy were calculated for all halogen derivatives of silane and germane. The calculation was performed for the ideal gas state at atmospheric pressure in the temperature range 100 to 1 500 K in the usual rigid rotator - harmonic oscillator approximation. In the case of molecules where the necessary experimental values of fundamental vibrational frequencies were missing, the calculation was performed using the predicted frequencies. On the basis of the values of molar heat capacities obtained in both these ways, a critical examination of the influence of the inaccuracy of the predicted vibration frequencies on the accuracy of calculated ideal gas thermodynamic functions was made.

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