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1983 (1)
1981 (1)
1979 (2)
1Author    A.-R Schulze, U. Hk, Müller-BuschbaumRequires cookie*
 Title    Oxogallates of Alkaline Earth Metals, IX The Structure of ß-SrGa204  
 Abstract    /?-SrGa204 was prepared and investigated by X-ray single crystal methods. It crystallizes with monoclinic symmetry: C2j>-P2i/c, a — 839.2; b = 901.8; c = 1069.7 pm; ß = 93.9°, Z — 8. The orientation of the tetrahedra is discussed in comparison with other well-known members of the stuffed tridymite structure. 
  Reference    Z. Naturforsch. 36b, 892—893 (1981); eingegangen am 27. März 1981 
  Published    1981 
  Keywords    Crystal Structure, Strontium, Gallium, Oxide 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0892_n.pdf 
 Identifier    ZNB-1981-36b-0892_n 
 Volume    36 
2Author    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 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1173.pdf 
 Identifier    ZNB-1983-38b-1173 
 Volume    38 
3Author    Hans-Jörg Widler, Johann WeidleinRequires cookie*
 Title    Methylmetallbromo-und -iodokomplexe des Galliums und Indiums Methyl Metal Bromo and Iodo Complexes of Gallium and Indium  
 Abstract    The interaction of (CH3)3M"i or (CH3)2Mi"Hal with (CH3)3M v Hal2 and (CH3)4M v Hal, respectively, yields methylhalogeno metalates of the general composition [(CH3)4MV]+[(CH3)4-xM II iHala;]-. (With M^ = As, Sb; M"i = Ga, In; Hal -Br, I and x— 1-3.) The vibrational spectra of these ionic compounds are reported and discussed. 
  Reference    (Z. Naturforsch. 34b, 18—22 [1979]; eingegangen am 20. September 1978) 
  Published    1979 
  Keywords    Methyl Halogeno Metalates, Preparation, Vibrational Spectra, Gallium, Indium 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0018.pdf 
 Identifier    ZNB-1979-34b-0018 
 Volume    34 
4Author    M. Schweizer, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Verbindungsbildung von MeO : M203, Teil III Zur Kenntnis von BeGa204 Compound Formation Me0:M203, Part III BeGa2C>4  
 Abstract    A new compound, BeGa204, was prepared by high temperature reaction between BeO and Ga203. X-ray single crystal investigations show a hitherto unknown structure type of M2+M23+04 compounds. BeGa204 crystallizes with hexagonal symmetry a = 775.0 and c = 298.0 pm, space group C£h-P63/m. Be 2+ and Ga 3+ are statistically distributed and are surrounded by 0 2--tetrahedra. 
  Reference    Z. Naturforsch. 34b, 1067—1069 (1979); eingegangen am 10. Mai 1979 
  Published    1979 
  Keywords    Beryllium, Gallium, Oxide, X-ray, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1067.pdf 
 Identifier    ZNB-1979-34b-1067 
 Volume    34