Crystal structures of M2SnCl6 salts. An analysis of the “crystal field effect” in their nuclear quadrupole resonance and vibrational spectra

1974 ◽  
Vol 13 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Thomas B Brill ◽  
Richard C Gearhart ◽  
Williaid A Welsh
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Crystal Structures ◽  
Crystal Field ◽  
Vibrational Spectra ◽  
Field Effect ◽  
Crystal Field Effect ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

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.

Cl35 PURE QUADRUPOLE RESONANCE FREQUENCIES IN THE CYCLIC PHOSPHONITRILIC CHLORIDE POLYMERS

1964 ◽  
Vol 42 (5) ◽  
pp. 1212-1225 ◽  
Author(s):  
M. A. Whitehead
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Crystal Structures ◽  
Phosphorus Atom ◽  
Frequency Measurement ◽  
Ring System ◽  
Resonance Frequencies ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
Nitrogen Ring

Pure nuclear quadrupole resonance frequencies of Cl35 in the cyclic phosphonitrilic chloride polymers, (PNCl2)n have been observed for n = 3, 4, 5, and 6. For both the tetramer and hexamer two different crystal structures were studied. The observed frequencies are discussed assuming that the phosphorus–nitrogen ring system possesses a polyallylic bond structure. Several substituted polymers were examined [Formula: see text] but only diphenyl-tetrachloro trimer, [Formula: see text] gave a frequency measurement. The ratio of the Cl35 quadrupole frequencies in two compounds is compared with the ratio of the effective orbital electronegativities of the phosphorus atom in the compounds.

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.

Nuclear quadrupole resonance of charge transfer complexes. I. The trihalide ions

1968 ◽  
Vol 21 (3) ◽  
pp. 551 ◽  
Author(s):  
GA Bowmaker ◽  
S Hacobian
Keyword(s):  
Charge Transfer ◽  
Nuclear Quadrupole Resonance ◽  
Charge Distribution ◽  
Crystal Field ◽  
Charge Transfer Complexes ◽  
Halogen Atoms ◽  
Charge Distributions ◽  
Resonance Frequencies ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

The nuclear quadrupole resonance frequencies of the halogen atoms in the trihalide ions 13 and Ibr2 in some of their crystalline salts have been measured. The results have been correlated with a simple LOAD-MO bonding description and the charge distributions in the ions have been calculated. These ions can be regarded as charge-transfer complexes as described by Mulliken. The effect of the crystal field on the charge distribution in the I3 ion has been investigated.

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