Abstract
Nuclear quadrupole resonance (NQR) spectra of chlorine and antimony in the 2SbCl3 · C6H6 complex and their temperature behavior between 77 K and the melting point were studied. The spectral lines of two nonequivalent SbCl3 moieties are compared with available X‐ray diffraction data. An analysis of the temperature dependence of the resonant frequency and the spin–lattice relaxation time for 35Cl nuclei showed the existence of thermally activated, intramolecular motion of chlorine atoms in this complex. The nature of the motion is determined by the shape of the SbCl3 moieties. The activation energies of the motion were obtained for the two structurally nonequivalent halves of the complex (75.5 and 79.5 kJ/mole).
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Kyuntsel', I.A., Mokeeva, V.A. 35Cl Nuclear Quadrupole Resonance and Thermally Activated Molecular Motion in the 2:1 Crystalline Complex of Antimony Trichloride with Benzene. Journal of Structural Chemistry 43, 772–776 (2002). https://doi.org/10.1023/A:1022869006475
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DOI: https://doi.org/10.1023/A:1022869006475