Go toArchive
Browse byFacets
Bookbag ( 0 )
'Relaxation' in keywords Facet   section ZfN Section B  [X]
Results  2 Items
Sorted by   
Publication Year
1984 (1)
1983 (1)
1Author    V. P. Tarasov, V. I. Privalov, G. A. Kirakosyan, YuA. BuslaevRequires cookie*
 Title    Scalar Second-Kind Relaxation of 27 A1, 69 Ga and 71 Ga Nuclei in Aluminium and Gallium Complexes  
 Abstract    Spin-spin and spin-lattice relaxation times of nuclei 69 > 71 Ga, 27 A1, 14 N in anions [MClnBr4_n]-and the solvate complexes [M(CH3CN)6] 3+ , produced from dissolution of MCI3 and MBr3 in the mixture CH3CN + CH3N02 (M = Ga, Al), are measured in the temperature range from —40 up to + 70 °C. It is shown that nuclear spins of 69 > 71 Ga, 27 A1 relax in the anionic and cationic complexes by means of the second-kind scalar and quadrupole relaxation mechanisms (due to the relaxation of the nuclei 35 ' 37 C1, 79 ' 81 Br, 14 N). The complexes [MClwBr4_n]-and [M(CH3CN)6] 3+ in the investigated solutions are inert and do not undergo exchange processes in the NMR time scale. The scalar spin coupling constants in [M(CH3CN)6] 3+ are determined from the scalar contribution to the relaxation rate of 69 -71 Ga, 27 A1, and the measured relaxation time of 14 N in the solvate complex; the results are Ga-14 N) -59 ± 5 Hz, J(71 Ga-14 N) = 74 ± 6 Hz, J(27 Al-i 4 N) = 22 ± 2 Hz. 
  Reference    Z. Naturforsch. 38b, 1173—1181 (1983); received May 3 1983 
  Published    1983 
  Keywords    Aluminium, Gallium, Relaxation, NMR 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1173.pdf 
 Identifier    ZNB-1983-38b-1173 
 Volume    38 
2Author    Z. NaturforschRequires cookie*
 Title    SN NM R Study of Tris  
 Abstract    (dimethylamino)phosphine Derivatives: (M e2N)3PSe, (M e2N)3PTe and (M e2N)3PB H 3 B ernd W rackm eyer The title com pounds have been studied by n B. i5N , ?iP, 7,Se and 125Te N M R spectroscopy (6 -val-ues, coupling, constants). The 15N relaxation is dominated by l:,N —'H dipolar interactions whereas nuclear screening anisotropy controls the 125Te re­ laxation. 
  Reference    Z. Naturforsch. 39b, 533 (1984); eingegangen am 8. D ezem ber 1983 
  Published    1984 
  Keywords    Am inophosphines, I5N NM R Spectra, Relaxation 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0533_n.pdf 
 Identifier    ZNB-1984-39b-0533_n 
 Volume    39