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1984 (1)
1976 (2)
1Author    JensA. Nhaus, Z. Afar, A. Siddiqi, Jürgen Schimkowiak, H. Erbert, W. Roesky, H. Eiko LuekenRequires cookie*
 Title    Darstellung und Eigenschaften von Cyclo-1 A6-metalla-3,5-ditha-2,4,6-triazenen Synthesis and Properties of Cyclo-lÄ6-metalla-3,5-dithia-2,4,6-triazenes Tam m annstraße 4, D -3400 G öttingen  
 Abstract    The metallacycles [C13M S2N 3]2 (M = M o, W) l a and 2a have been obtained from reactions of S4N 4 with M o2C l10 and WC16, respectively, and from S3N 3C13 with the hexacarbonyls M (C O)6. The adducts C13MS2N 3 • CH 3CN lb and 2 b are form ed with acetonitrile, and the salts [Ph4A s~][C l4MS2N 3~] l c and 2c with addition o f Ph4A sC l. R eactions o f M o2C110 and WC16, respectively, with related S —N com pounds lead predom inantly to l a and 2a; M o2C110 reacts with S 3N 2C12 to give l a , and with [M e3SiN ]2S to give [Cl3M oN ]t. while W Cl6 yields C14WNSC1 with S 3N 2C12, and 2a with [M e3SiN ]2S. [Cl3M oN ]v does not react with S4N 4, but [C13W N]A . forms 2a. R eactions of VC14 and V O C l3 with [M e3SiN ]2S give [Cl2V S 2N 3]v, 3. 2c has also been obtained by 
  Reference    Z. Naturforsch. 39b, 1722—1728 (1984); eingegangen am 13. Septem ber 1984 
  Published    1984 
  Keywords    Sem i-conductor, H eterocycles, NM R spectra, Susceptibility 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-1722.pdf 
 Identifier    ZNB-1984-39b-1722 
 Volume    39 
2Author    H.-D Amberger, R. D. Fischer, G. G. RosenbauerRequires cookie*
 Title    Zur Elektronenstruktur hochsymmetrischer Komplexe der Lanthaniden und Actinoiden, I Magnetismus und Schwingungsspektren von Tris(tetraäthylammonium)-hexaisocyanato-ytterbium(III) The Electronic Structure of Highly-Symmetrical Lanthanide and Actinide Complexes, I Magnetism and Vibrational Spectra of Tris(tetraethylammonium)-hexaisocyanate-ytterbium(III)  
  Reference    (Z. Naturforsch. 31b, 1—11 [1976]; eingegangen am 7. Mai 1975) 
  Published    1976 
  Keywords    Tris(tetraethylammonium)-hexaisocyanate-ytterbium(III), Vibrational Spectra, Susceptibility, Crystal Field Splitting Pattern 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0001.pdf 
 Identifier    ZNB-1976-31b-0001 
 Volume    31 
3Author    H.-D Amberger, R. D. Fischer, B. KanellakopulosRequires cookie*
 Title    of Uranium(rV) -tetracyclopentadienide  
 Abstract    Some significant features of the low-energy part of the crystal field (=CF) splitting pattern of the organometallic 5f 2 -system (^ 5 -C5Hs)4U(IV) can be deduced from the tem-perature dependence of the magnetic susceptibility which has been measured on poly-crystalline samples between 1.1 and 298 K. The results of model calculations performed independently on the basis of three different semi-empirical approaches are compatible with the deductions from the experiments and allow estimates of the sign and order of magnitude of quantities like the CF-splitting parameters B4 0 and Bö 0 viz. the (averaged) angular overlap parameters ea and e" and of the valence state ionisation potential of the 5f-electrons. Anticipating a rather weakly perturbed tetrahedral CF, the observed magnetic properties may be satisfactorily simulated if the six lowest-lying first-order CF-states and one common scaling factor are accounted for. 
  Reference    (Z. Naturforsch. 31b, 12—21 [1976]; received July 17 1975) 
  Published    1976 
  Keywords    Uranium-tetracyclopentadienide, Susceptibility, Model Calculations, Crystal Field Splitting Pattern, Electronic Structure 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0012.pdf 
 Identifier    ZNB-1976-31b-0012 
 Volume    31