ChemInform Abstract: 121Sb,123Sb and 209Bi Nuclear Quadrupole Resonance Study of Complex Compounds of Antimony(III) and Bismuth(III) in the Temperature Range 77-400 K

ChemInform ◽  
2010 ◽  
Vol 29 (40) ◽  
pp. no-no
Author(s):  
L. A. ZEMNUKHOVA ◽  
R. L. DAVIDOVICH
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Complex Compounds ◽  
Temperature Range ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

121,123Sb and 209Bi Nuclear Quadrupole Resonance Study of Complex Compounds of Antimony(III) and Bismuth(III) in the Temperature Range 77-400 K

1998 ◽  
Vol 53 (6-7) ◽  
pp. 573-584 ◽  
Author(s):  
L. A. Zemnukhova ◽  
R. L. Davidovich
Keyword(s):  
Aqueous Solutions ◽  
Nuclear Quadrupole Resonance ◽  
Crystal Structures ◽  
Wide Temperature Range ◽  
Complex Compounds ◽  
Temperature Range ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

Abstract A large number of solid fluoride and heteroligand acidocomplex compounds of antimony(III) and bismuth(III) with single and mixed cations has been prepared from aqueous solutions. Their crystal structures and 121,123Sb and 209Bi NQR spectra have been investigated in a wide temperature range.

Kernquadrupolresonanz(KQR)-Spektroskopie an 35Cl in Komplexverbindungen von Arsentrichlorid, AsCl3, mit einigen aromatischen Kohlenwasserstoffen

1968 ◽  
Vol 23 (2) ◽  
pp. 174-177 ◽  
Author(s):  
D. Biedenkapp ◽  
Alarich Weiss
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Aromatic Hydrocarbons ◽  
Freezing Point ◽  
Complex Compounds ◽  
Crystalline Complex ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

By measuring the 35Cl nuclear quadrupole resonance (NQR) spectra it is shown that AsCl3, like SbCl3, is able to form crystalline complex compounds with aromatic hydrocarbons. Investigation of the freezing-point diagrams reveal the existence of the following compounds: 2 AsCl3 · CeH6; 2 AsCl3 · C10H8; 2 AsCl3 · (C6H5) 2CH2; 2 AsCl3 · p-C6H4 (CH3)2; 2 AsCl3· C6H5C2H5 and AsCl3 · C6H5C2H5. The 35Cl NQR spectra of these compounds are given and compared with the NQR spectra of the analogous SbCl3-complexes.

Chlorine nuclear quadrupole resonance lineshape in the cubic antifluorite K2OsCl6

1985 ◽  
Vol 63 (3) ◽  
pp. 350-353 ◽  
Author(s):  
Maximo E. Ramia ◽  
Robin L. Armstrong
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Point Defects ◽  
Temperature Dependent ◽  
Local Strains ◽  
Temperature Range ◽  
Quadrupole Resonance ◽  
Symmetric Line ◽  
Nuclear Quadrupole

Chlorine nuclear quadrupole resonance lineshapes are reported for the cubic antifluorite K2OsCl6 in the temperature range 70–300 K. For temperatures above 172 K the spectrum consists of a single symmetric line; for temperatures below 172 K an asymmetric line is observed which can be represented as a sum of two symmetric lines. The symmetric lines are temperature dependent mixtures of Lorentzian and Gaussian profiles. The explanation is that the nuclear quadrupole resonance lines observed in K2OSCl6 are inhomogeneously broadened by temperature dependent local strains caused by point defects and dislocations.

scholarly journals 79Br and 127І Nuclear Quadrupole Resonance Investigations of Ortho-Substituted Anilinium Halides, 2-RC6H4NH3⊕ X⊖ with X = Br, I and R = CI, CN, C2H5, NH2, and NH3⊕ X⊖

1991 ◽  
Vol 46 (4) ◽  
pp. 367-375 ◽  
Author(s):  
Jutta Hartmann ◽  
Alarich Weiss
Keyword(s):  
Phase Transitions ◽  
Nuclear Quadrupole Resonance ◽  
Temperature Range ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

Abstract The 79Br and 127I nuclear quadrupole resonance, NQR, spectra of ortho-substituted anilinium bromides and iodides 2-RC6H4NH3⊕ X⊖ with X = Br, I and R = CI, CN, C2H5, NH2, and NH3⊕ X⊖ have been investigated in the temperature range 77 < T/K <420. Phase transitions occur in 2-(C2H5)C6H4NH3⊕ Br⊖ ½H2O at Tc= 164 K. in 2-(C2H5)C6H4NH3⊕ I⊖ at Tc = 214 K, in [1,2-C6H4(N(H,D)3)-]2⊕[Br⊖]2 at Tc = 209 K, and in [1,2-C6H4(NH3)2]2⊕[I⊖]2 at Tc = 173 K. The NQR data are discussed and compared with NQR spectra of para-substituted anilinium halides

Nuclear Quadrupole Resonance Study of 35Cl in Chloral Hydrate, CCl3CH(OH)2, and Chloral Deuterate, CCl3CH(OD)2

1967 ◽  
Vol 22 (7) ◽  
pp. 1124-1126 ◽  
Author(s):  
Dieter Biedenkapp ◽  
Alarich Weiss
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Crystal Field ◽  
Room Temperature ◽  
Chloral Hydrate ◽  
Temperature Range ◽  
Field Effects ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

The nuclear quadrupole resonance (NQR) spectra of 35Cl in chloral hydrate and chloral deuterate were investigated in the temperature range between 77°K and 323 °K. Two modifications have been found for each substance. One of the modifications is unstable at room temperature and changes within a few weeks into the stable modification. The NQR spectrum can be explained in terms of crystal field effects.

The chemical interpretation and the temperature dependence of the 14N nuclear quadrupole resonance of aniline and several derivatives

1968 ◽  
Vol 46 (22) ◽  
pp. 3595-3604 ◽  
Author(s):  
C. T. Yim ◽  
M. A. Whitehead ◽  
Donald H. Lo
Keyword(s):  
Temperature Dependence ◽  
Nuclear Quadrupole Resonance ◽  
Coupling Constants ◽  
Temperature Range ◽  
Resonance Frequencies ◽  
Quadrupole Coupling ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
Asymmetry Parameters ◽  
Phenylene Diamine

The 14N nuclear quadrupole resonance frequencies of aniline, o- and p-phenylene diamine, and p-chloro-, p-bromo-, and p-iodo-aniline were measured with a super-regenerative oscillator over a temperature range from 77 to 292 °K. The temperature dependence is analyzed. The chemical interpretation of the quadrupole coupling constants and asymmetry parameters is described.

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