Hyperfine structure measurements of Nb I and Nb II by Fourier transform spectroscopy

10.1515/zna-1989-0911 ◽

1989 ◽

Vol 44 (9) ◽

pp. 837-840

Author(s):

H. Ehrlichmann ◽

J.-U. Grabow ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

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.

Investigation of the 14N Quadrupole Hyperfine Structure and the Stark Effect of Methyl Isocyanate and Methyl Isothiocyanate by Microwave Fourier Transform Spectroscopy

10.1515/zna-1986-0408 ◽

1986 ◽

Vol 41 (4) ◽

pp. 637-640 ◽

Cited By ~ 20

Author(s):

W. Kasten ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

High Resolution ◽

Hyperfine Structure ◽

Stark Effect ◽

Dipole Moments ◽

Methyl Isocyanate ◽

Methyl Isothiocyanate ◽

Rotational Spectra ◽

Coupling Tensor

The nitrogen 14N quadrupole hyperfine structure and the Stark effect in the rotational spectra of methyl isocyanate and methyl isothiocyanate were investigated by high resolution microwave Fourier transform spectroscopy.The components of the coupling tensor in the principal inertia axis system and the n a components of the dipole moments have been determined.

Nuclear Quadrupole Hyperfine Structure in the Rotational Spectrum of 3-Chloropyridine. An Application of Microwave-Microwave Double Resonance Fourier Transform Spectroscopy

10.1515/zna-1988-0708 ◽

1988 ◽

Vol 43 (7) ◽

pp. 657-661 ◽

Cited By ~ 9

Author(s):

N. Heineking ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Double Resonance ◽

Coupling Constants ◽

Rotational Spectrum ◽

Rotational Constants ◽

Modulation Technique ◽

Quadrupole Coupling ◽

Nuclear Quadrupole

AbstractWe redetermined the rotational and the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants of 3-chloropyridine. The values are A = 5839.5330(12) MHz, B = 1604.1875(6) MHz, and C = 1258.3121 (5) MHz for the rotational constants, and χaa(Cl) = - 72.255(19) MHz, χbb(Cl) = + 38.500(13) MHz, χcc(Cl) = + 33.755(23) MHz and χaa(N) = - 0.009(13) MHz, χbb(N) = - 3.473(10) MHz, χCC(N) = + 3.482(16) MHz for the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants, respectively.Application of double resonance modulation technique is shown to greatly simplify the assignment of hyperfine structure components even of weak rotational transitions.

14N Quadrupole Coupling in the Rotational Spectra of Cyclopropylamine and Cyclopropyl Cyanide

10.1515/zna-1989-0709 ◽

1989 ◽

Vol 44 (7) ◽

pp. 655-658 ◽

Cited By ~ 6

Author(s):

Olaf Böttcher ◽

Nils Heineking ◽

Dieter Hermann Sutter

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Coupling Constants ◽

Rotational Spectra ◽

Abstract The 14N hyperfine structure in the rotational spectra of cyclopropylamine and cyclopropyl cyanide has been reinvestigated by microwave Fourier transform spectroscopy. The observed quadrupole coupling constants in units of MHz are: Xaa = 2.3338(18), Xbb = 1.7874(20), Xcc = −4.1209(20) for cyclopropylamine and Xaa = −3.4536(35), Xbb= 1.7468(51), Xcc= 1.7068(51) for cyclopropyl cyanide.

Hyperfine Structure Measurements of Neutral Manganese with Fourier Transform Spectroscopy

The Astrophysical Journal Supplement Series ◽

10.1086/427924 ◽

2005 ◽

Vol 157 (2) ◽

pp. 402-409 ◽

Cited By ~ 38

Author(s):

Richard J. Blackwell‐Whitehead ◽

Juliet C. Pickering ◽

Owen Pearse ◽

Gillian Nave

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Fourier Transform Spectroscopy

Investigation of the Nitrogen Hyperfine Structure of Vinylisocyanide by Microwave Fourier Transform Spectroscopy in the X-and Ku-Band

10.1515/zna-1982-0113 ◽

1982 ◽

Vol 37 (1) ◽

pp. 58-63 ◽

Cited By ~ 1

Author(s):

G. Bestmann ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Fourier Transform Spectrometer ◽

Rotational Transitions ◽

Ku Band

Abstract In memory of W. H. We discuss the features of a microwave Fourier transform spectrometer in the X-and Ku-band as applied to the investigation of the hyperfine structure of rotational transitions. The Nitrogen-hyperfine structure of vinylisocyanide was measured and analysed.

Nitrogen Quadrupole Coupling in Ethyl Isocyanide, C2H5NC

10.1515/zna-1985-0109 ◽

1985 ◽

Vol 40 (1) ◽

pp. 43-45 ◽

Cited By ~ 11

Author(s):

E. Fliege ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Structure Analysis ◽

In this paper we present a 14N-quadrupole hyperfine structure analysis for ethyl isocyanide, CH3CH2NC, by use of microwave Fourier transform spectroscopy. For earlier works as e.g. CH3NC [1], such narrow splittings as they are met with in the case of the isonitriles had to be measured employing a maser beam spectrometer.

Nitrogen and Deuterium Hyperfine Structure in the Rotational Spectrum of Morpholine

10.1515/zna-1989-0910 ◽

1989 ◽

Vol 44 (9) ◽

pp. 833-836 ◽

Cited By ~ 8

Author(s):

J.-U. Grabow ◽

H. Ehrlichmann ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Coupling Constants ◽

Rotational Spectrum ◽

Rotational Spectra ◽

Abstract We reinvestigated the rotational spectra of morpholine and N-deutero morpholine with the higher precision of microwave Fourier transform spectroscopy. The rotational, centrifugal, and nitrogen quadrupole coupling constants were improved and the deuterium quadrupole coupling constants determined.

Quadrupole Hyperfine Structure in the Rotational Spectrum of n-PropylIsocyanide

10.1515/zna-1988-0315 ◽

1988 ◽

Vol 43 (3) ◽

pp. 277-279 ◽

Cited By ~ 7

Author(s):

K. Vormann ◽

R. Schwarz ◽

H. Dreizler

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Rotational Spectrum

An investigation of the 14N quadrupole hyperfine structure in the rotational spectrum of n-propyl isocyanide is presented. It was possible to resolve the multiplets by using microwave Fourier transform spectroscopy.

Nitrogen and Deuterium Hyperfine Structure in the Rotational Spectrum of Piperidine

10.1515/zna-1989-0912 ◽

1989 ◽

Vol 44 (9) ◽

pp. 841-847 ◽

Cited By ~ 1

Author(s):

H. Ehrlichmann ◽

J.-U. Grabow ◽

H. Dreizler ◽

N. Heineking ◽

M. Andolfatto

Keyword(s):

Fourier Transform ◽

Hyperfine Structure ◽

Coupling Constants ◽

Rotational Spectrum ◽

Rotational Spectra ◽

Coupling Tensor ◽

Abstract We reinvestigated by microwave Fourier transform spectroscopy the rotational spectra of the axial and equatorial isotopomers of piperidine and N-deutero piperidine. The rotational, centrifugal, and nitrogen quadrupole coupling constants were improved, the deuterium quadrupole coupling constants were determined. The principal coupling tensor elements for nitrogen were estimated.