Rotational spectra of tert-butyl bromide and iodide measured in the millimetre-wave region and by Fourier-transform techniques

1993 ◽  
Vol 89 (3) ◽  
pp. 397 ◽  
Author(s):  
Stuart Brotherton ◽  
A. C. Legon ◽  
Joanna C. Thorn ◽  
B. Turner ◽  
Andrew L. Wallwork ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Butyl Bromide ◽  
Millimetre Wave ◽  
Rotational Spectra ◽  
Tert Butyl ◽  
Wave Region

ChemInform Abstract: Rotational Spectra of tert-Butyl Bromide and Iodide Measured in the Millimetre-Wave Region and by Fourier-Transform Techniques.

ChemInform ◽  
2010 ◽  
Vol 24 (22) ◽  
pp. no-no
Author(s):  
S. BROTHERTON ◽  
A. C. LEGON ◽  
J. C. THORN ◽  
B. TURNER ◽  
A. L. WALLWORK ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Butyl Bromide ◽  
Millimetre Wave ◽  
Rotational Spectra ◽  
Tert Butyl ◽  
Wave Region

Hyperfine Structure in the Rotational Spectrum of tert-Butyl Bromide

1990 ◽  
Vol 45 (6) ◽  
pp. 807-810 ◽  
Author(s):  
H. Harder ◽  
W. Stahl ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Hyperfine Structure ◽  
Spin Rotation ◽  
Coupling Constants ◽  
Rotational Spectrum ◽  
Centrifugal Distortion ◽  
Butyl Bromide ◽  
Rotational Spectra ◽  
Tert Butyl ◽  
Quadrupole Coupling

AbstractWe reinvestigated the rotational spectra of tert-butyl bromide (CH3)3C79Br and (CH3)3C81Br, with the high precision of microwave Fourier transform spectroscopy. The rotational and quadrupole coupling constants were improved, the centrifugal distortion and bromine spin-rotation constants were determined

scholarly journals Understanding (coupled) large amplitude motions: the interplay of microwave spectroscopy, spectral modeling, and quantum chemistry

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ha Vinh Lam Nguyen ◽  
Isabelle Kleiner
Keyword(s):  
Fourier Transform ◽  
Quantum Chemistry ◽  
Large Amplitude ◽  
Environmental Chemistry ◽  
Broad Band ◽  
Microwave Spectroscopy ◽  
Rotational Spectrum ◽  
Spectral Modeling ◽  
Rotational Spectra ◽  
Large Amplitude Motions

AbstractA large variety of molecules contain large amplitude motions (LAMs), inter alia internal rotation and inversion tunneling, resulting in tunneling splittings in their rotational spectrum. We will present the modern strategy to study LAMs using a combination of molecular jet Fourier transform microwave spectroscopy, spectral modeling, and quantum chemical calculations to characterize such systems by the analysis of their rotational spectra. This interplay is particularly successful in decoding complex spectra revealing LAMs and providing reference data for fundamental physics, astrochemistry, atmospheric/environmental chemistry and analytics, or fundamental researches in physical chemistry. Addressing experimental key aspects, a brief presentation on the two most popular types of state-of-the-art Fourier transform microwave spectrometer technology, i.e., pulsed supersonic jet expansion–based spectrometers employing narrow-band pulse or broad-band chirp excitation, will be given first. Secondly, the use of quantum chemistry as a supporting tool for rotational spectroscopy will be discussed with emphasis on conformational analysis. Several computer codes for fitting rotational spectra exhibiting fine structure arising from LAMs are discussed with their advantages and drawbacks. Furthermore, a number of examples will provide an overview on the wealth of information that can be drawn from the rotational spectra, leading to new insights into the molecular structure and dynamics. The focus will be on the interpretation of potential barriers and how LAMs can act as sensors within molecules to help us understand the molecular behavior in the laboratory and nature.

A rotational spectroscopic and ab initio study of cis and trans (-)-carveol: Further insights into conformational dynamics in monoterpenes and monoterpenoids

2021 ◽  
Author(s):  
Arsh Singh Hazrah ◽  
Mohamad al-Jabiri ◽  
Raiden Speelman ◽  
Wolfgang Jaeger
Keyword(s):  
Fourier Transform ◽  
Ab Initio ◽  
Conformational Dynamics ◽  
Ab Initio Study ◽  
Chirped Pulse ◽  
Rotational Spectra ◽  
Microwave Spectrometer ◽  
Cis And Trans

Broadband rotational spectra of cis- and trans- (-) carveol were recorded using a chirped pulse Fourier transform microwave spectrometer in the 2-6 GHz region. To aid in spectroscopic assignments a...

Facile synthesis of tert-butyl ester of N-protected amino acids with tert-butyl bromide

1993 ◽  
Vol 34 (46) ◽  
pp. 7409-7412 ◽  
Author(s):  
Pierre Chevallet ◽  
Patrick Garrouste ◽  
Barbara Malawska ◽  
Jean Martinez
Keyword(s):  
Amino Acids ◽  
Butyl Ester ◽  
Facile Synthesis ◽  
Butyl Bromide ◽  
Tert Butyl

The Study of Birefringence and Orientational Order in Plastic Tert-Butyl Bromide

1990 ◽  
Vol 192 (1) ◽  
pp. 197-201 ◽  
Author(s):  
M. N. Akimov ◽  
O. F. Bezrukov ◽  
M. F. Vuks ◽  
A. V. Struts
Keyword(s):  
Orientational Order ◽  
Butyl Bromide ◽  
Tert Butyl

14N-and D-Hyperfine Structure in the Rotational Spectrum of Pyrrolidine

1989 ◽  
Vol 44 (9) ◽  
pp. 837-840
Author(s):  
H. Ehrlichmann ◽  
J.-U. Grabow ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Hyperfine Structure ◽  
Fourier Transform Spectroscopy ◽  
Coupling Constants ◽  
Rotational Spectrum ◽  
Centrifugal Distortion ◽  
Rotational Spectra

Abstract We present an analysis of the rotational spectra of the normal and the N-deuterated pyrrolidine measured by microwave Fourier transform spectroscopy. The quartic centrifugal distortion con­ stants and the 14N coupling constants have been determined with higher accuracy. In addition the D hyperfine structure could be analyzed.

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