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1996[X]
1Author    Ya-Nan Zhao, Sundara Ramaprabhu, EdwinA C LückenRequires cookie*
 Title    An NQR Study of Inclusion Compounds Formed Between Small Chlorine-containing Molecules and Ä/s(N-alkylimidazolidine-2-thione)Cu(I) Halide Complexes  
 Abstract    Twenty-five inclusion complexes formed by fe(N-alkyiimidazolidine-2-thione)cuprous halides with the small, chlorine-containing guest molecules CC1 4 , CHC1 3 , CH 2 C1 2 , CH 3 CC1 3 or C 2 H 2 C1 2 , have been prepared. Their 63 Cu and 35 C1 NQR spectra have been measured over the temperature range 77-300 K. For the corresponding bromides the 79 Br and/or 81 Br spectra have also been investigated. The studies reveal the number and symmetry of different inclusion site. The onset of rapid reorientation of the guest molecules is indicated by the fading out of their NQR signals between 77 and 300 K, whereas the resonances from the host molecules usually persist throughout this temperature range. However, as evidenced by discontinuities in the temperature-dependence of the NQR frequencies of the hosts, sixteen of the complexes show one or more phase-changes in this temperature-range. 
  Reference    Z. Naturforsch. 51a, 677—685 (1996); received December 12 1995 
  Published    1996 
  Keywords    NQR, Copper(I), Guest, Inclusion, Complex 
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 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-0677.pdf 
 Identifier    ZNA-1996-51a-0677 
 Volume    51