Temperature dependence of shift

Combines sensitivity of EPR and high resolution of NMR to probe ligand superhyperfine interactions For paramagnetic proteins enhanced chemical shift resolution, contact and dipolar shifts, spin delocalization, magnetic coupling from temperature dependence of shifts Identification of ligands coordinated to a metal centre... 

Fig. 4.8. Temperature dependences of shifts (a) and widths (b) for Davydov-split spectral lines of local vibrations in the 2x1 phase of CO molecules adsorbed on the NaCI(lOO) surface.

Observe resonances of atoms in metal environment chemical shift, relaxation rate, and temperature dependence of shift related to paramagnetism of metal, including coupled integer systems... 

In conclusion, the temperature dependence of shift factors for the networks studied here do not follow the WLF equation, but rather an Arrhenius-type relationship. The apparent activation energies are independent of stoichiometric variation [as they are when is varied by changing prepolymer molecular weight (13)]. ... 

Lio.48(THF)o,3HfNCl Ton et al.(M) Zero Knight shift temperature dependence of shift measured from 4-150 K... 

One approach to find the parameters for equations 5 or 6 is by a b t fit of the DSC data. A more satisfying sq>proach may be to obtain the parameters from the temperature dependence of shift factors used to reduce isothermal data, where the shift factor is simply the difference between the In at the temperature of int est and the In at a... 

Figure 12.15 Stress relaxation master curve for PET/0.6PHB at the reference temperature 20 C (a) and temperature dependence of shift factor (b). The symbols in the master curve are the same as in Figure 12.14. (After [51].)...

TABLE 26.1. WLF parameters characterizing temperature dependencies of shift factors for relaxation and retardation times in various polymer systems. 

Fig. 128. Temperature dependence of shift factor (a,) obtained from the time-temperature shift for an amorphous LassAhjNijo alloy.

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