scholarly journals Molecular g-Values and Magnetic Susceptibility Anisotropy Parameters of D2-Ketene. Sign of the Dipole Moment of Ketene

1974 ◽  
Vol 29 (10) ◽  
pp. 1495-1497 ◽  
Author(s):  
K. V. L. N. Sastry ◽  
A. Guarnieri
Keyword(s):  
Magnetic Susceptibility ◽  
Dipole Moment ◽  
High Resolution ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Zeeman Effect ◽  
Magnetic Susceptibility Anisotropy ◽  
Anisotropy Parameters ◽  
G Factors

Abstract The rotational Zeeman-effect of D2CCO has been observed under high resolution. In addition to g-factors and susceptibility anisotropics the sign of the electric dipole moment has been determined after having remeasured the same parameters for normal ketene under identical conditions.

The Rotational Zeeman Effect of Methyl-and Silylbromide

1979 ◽  
Vol 34 (4) ◽  
pp. 469-481
Author(s):  
K.-F. Dössel ◽  
D. H. Sutter
Keyword(s):  
Dipole Moment ◽  
High Resolution ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Zeeman Effect ◽  
Spin Rotation ◽  
Coupling Constants

The rotational Zeeman effect of the J→J' = 0→1, K = 0 transition has been investigated for CH381Br and SiH381Br under high resolution. The shielding constant for the 81Br-nucleus in these molecules has been determined from the spectra and is compared to the values calculated from the spin-rotation coupling constants. The sign of the electric dipole moment in SiHßBr is shown to be ⊕H3SiBr⊕. From the Zeeman effect of two K ≠ 0 transitions of SiH3Br, g|| is determined to be negative for SiHaBr, in contrast to CH3Br, where g|| is positive

Zeeman-Effekt im Rotationsspektrum von Perdeuterodimethylsulfid / Rotational zeeman-effect of perdeuterodimethylsulfid

1972 ◽  
Vol 27 (7) ◽  
pp. 1159-1164 ◽  
Author(s):  
E. Hamer ◽  
D. H. Sutter ◽  
H. Dreizler
Keyword(s):  
Dipole Moment ◽  
High Resolution ◽  
Shape Analysis ◽  
Electric Dipole Moment ◽  
Sulfur Atom ◽  
Electric Dipole ◽  
Line Shape ◽  
Zeeman Effect ◽  
Line Shape Analysis

Abstract The rotational Zeeman effect of (CH3)2S and (CD3)2S has been observed under high resolution. Earlier measurements of BENSON and FLYGARE 2 on (CH3)2S were supplemented by the recording of two additional transitions. A line shape analysis was used to evaluate the data which led to the determination of the diagonal elements of the g-tensor and of the susceptibility anisotropies [in 10-6 erg/(G2 mole)] :From the change of the g-values upon deuteration it was possible to determine the sign of the electric dipole moment (negative end at the sulfur atom)

Molekülstrahl-Resonanz-Messungen von Hyperfeinstruktur, Zeeman-und Stark-Effekt an TlCl-Isotopen in verschiedenen Schwingungszuständen / Molecular Beam Resonance Measurements of Hyperfine Structure, Zeeman- and Stark-Effect of TICl-lsotopes in Different Vibrational States

1972 ◽  
Vol 27 (1) ◽  
pp. 77-91 ◽  
Author(s):  
R. Ley ◽  
W. Schauer
Keyword(s):  
Magnetic Field ◽  
Dipole Moment ◽  
Hyperfine Structure ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Molecular Beam ◽  
Stark Effect ◽  
Zeeman Effect ◽  
Magnetic Shielding ◽  
Vibrational States

AbstractHyperfine structure, Stark effect and Zeeman effect of the TlCl molecule have been measured with a molecular beam apparatus using electric four poles as deflecting fields and a homogeneous electric field parallel to a superimposed magnetic field in the transition region. Electric dipole transitions were induced between the hyperfine structure levels of the first rotational state J = 1 in both strong and weak external field.The following quantities could be evaluated from the spectra: the electric dipole moment µel and the magnetic rotational dipole moment µJ of the molecule, the nuclear spin-rotational interactions c1 and c2, the scalar and tensor part of the nuclear dipole-dipole interaction dS and dT, the quadrupole coupling constant e q Q of the Cl nucleus, the anisotropy of the magnetic susceptibility ξ⊥− ξ∥ , the anisotropy of the magnetic shielding of the external magnetic field at the position of both nuclei (σ⊥- σ∥)1 and (σ⊥- σ∥)2, the magnetic moment of the Cl nucleus multiplied by the scalar part of the magnetic shielding tensor µ2 · (1 - σS)2. For the most abundant isotop 205Tl35Cl the vibrational dependence of most of these quantities was measured in the vibrational states v =0, 1, 2, 3. Isotopic effects for 203Tl35Cl, 205Tl37Cl and 203Tl37Cl were investigated in the ground vibrational state. In addition the vibrational dependence of the electric dipole moment was measured for all isotopic species.It is pointed out that the usual connections between (σ⊥- σ∥)1,2 and c1,2 and between ξ⊥− ξ∥ and µJ do not hold when the excited electronic states of the molecule obey Hund’s coupling case c, which occurs most probably in TlCl.

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