Temperature and Pressure Dependence of 35Cl Nuclear Quadrupole Resonance in BiCl3

1973 ◽  
Vol 51 (14) ◽  
pp. 2290-2291 ◽  
Author(s):  
G. C. Gillies ◽  
R. J. C. Brown
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Pressure Dependence ◽  
Constant Pressure ◽  
Temperature Coefficients ◽  
Quadrupole Resonance ◽  
Intermolecular Bonding ◽  
Temperature And Pressure ◽  
Nuclear Quadrupole ◽  
35Cl Nuclear Quadrupole Resonance ◽  
Volume Effects

The temperature and pressure dependences of the two 35Cl nuclear quadrupole resonances in BiCl3 have been measured. At constant pressure, the temperature coefficients are markedly different and this difference is shown to be due to volume effects associated with different intermolecular bonding.

Nuclear quadrupole resonance and intermolecular interactions: temperature and pressure effects in Group V trichlorides

1976 ◽  
Vol 54 (14) ◽  
pp. 2266-2279 ◽  
Author(s):  
Grant Callum Gillies ◽  
Richard Julian Challis Brown
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Pressure Coefficient ◽  
Pressure Effects ◽  
Group V ◽  
Resonance Frequencies ◽  
Quadrupole Resonance ◽  
Temperature Dependences ◽  
Intermolecular Bonding ◽  
Temperature And Pressure ◽  
Nuclear Quadrupole

Nuclear quadrupole resonance frequencies for the metal and chlorine atoms in AsCl3 and SbCl3 have been measured as functions of temperature and pressure. These data are analysed to obtain the isothermal volume dependences and the isochoric temperature dependences of the field gradient parameters. Existing knowledge of the Group V trichlorides shows that the strength of intermolecular bonding increases in the order AsCl3 < SbCl3 < BiCl3, and this trend is reflected in the relative importance of volume effects in determining the nqr frequencies in these solids. A simple theory of the pressure dependences of nqr frequencies in molecular crystals is proposed, which accounts for all data presently available. The pressure coefficient contains static and dynamic contributions which are of opposite signs; the static contribution is negative and becomes numerically larger as the strength of intermolecular bonding increases.

35Cl Nuclear Quadrupole Resonance in NH4H(ClCH2COO)2

1968 ◽  
Vol 25 (1) ◽  
pp. 291-291 ◽  
Author(s):  
Taisei Yamamoto ◽  
Nobuo Nakamura ◽  
Hideaki Chihara
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
35Cl Nuclear Quadrupole Resonance
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