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'Germanium' in keywords Facet   Publication Year 1998  [X]
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1998[X]
1Author    GalinaS. Zaitseva3 ', BettinaA. Siggelkowb, SergeyS. Karlov3, GlebV. Pen 'kovoy3, Jörg LorberthbRequires cookie*
 Title    Synthesis and Characterization of l-Allyl-3,7,10-trimethylgermatrane and 1-Allylazagermatranes  
 Abstract    The reaction between Br?GeAll (1) and N(CFhCFIM eOSnBu3)3 (2, mixture o f isomers) yielded N(CFLCHM eO)3G eA ll (3) as a mixture o f diastereomers. Three azagermatranes o f the type N(CH2CH2N R)3GeA ll (9, R = H; 10, R = Me; 11, R = M e3Si) have been synthesized from the reaction o f (M e2N)3G eA ll (5) with N (C H 2CH2N H R)3 (R = H, 6; Me, 7; M e3Si, 8). Composition and structures o f the new compounds were established by elemental analyses, 'H and l3C NM R spectroscopy and mass spectrometry. 
  Reference    Z. Naturforsch. 53b, 1255—1258 (1998); received Jule 13 1998 
  Published    1998 
  Keywords    Germanium, Germatrane, Azagermatranes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1255.pdf 
 Identifier    ZNB-1998-53b-1255 
 Volume    53 
2Author    SvetlanaN. Nikolaeva3, EvgeniV. Avtomonov, Jörg Lorberthb, ValeryS. Petrosyan3Requires cookie*
 Title    The Reaction of Bis[bis(trimethylsilyl)amino]germylene with Bromocyanogen and the Crystal Structure of Bis[bis(trimethylsilyl)amino]bromocyanogermane  
 Abstract    Bis[bis(trimethylsilyl)amino)]germylene (1) reacts with bromocyanogen to give bis[bis(trimethylsilyl)amino]bromocyanogermane (2). 2 crystallises from petroleum ether as a colourless solid which has been characterised by IR, H,I3C, 29Si NMR spectroscopy, ele­ mental analysis and X-ray diffractometry. 
  Reference    (Z. Naturforsch. 53b, 9—12 [1998]; received October 7 1997) 
  Published    1998 
  Keywords    Germanium, Germylene, Germyl Cyanide, X-Ray Data 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0009.pdf 
 Identifier    ZNB-1998-53b-0009 
 Volume    53 
3Author    Max Herberhold, Silke Gerstmann, Bernd WrackmeyerRequires cookie*
 Title    Tetrakis(sulfurdiimido)silane, -germane and -stannane  
 Abstract    Two tetrakis(sulfurdiimido)silanes [Si(NSNR)4 (R = rBu la, SiMe3 lb)], two germanes [Ge(NSNR)4 (R = rBu 2a, SiMe3 2b)] and one stannane [Sn(NSN?Bu)4Sn 3a] were prepared and characterised by 'H, l3C, i5N, 29Si and ll9Sn NMR spectroscopy in solution, and 3a was also studied in the solid state by 1 l9Sn CP/MAS NMR. Whereas la,b and 2a,b are monomeric in solution, the 119Sn NMR data suggest that 3a is associated both in solution and in the solid state, and that the tin atoms are hexa-coordinated. The attempted stepwise synthesis of la by using one, two, three or four equivalents of K[(NSN)rBu] led to mixtures of la with Cl3Si(NSNrBu) 4a, Cl2Si(NSN/Bu)2 5a, and ClSi(NSNfBu)3 6a. Only one sulfurdiimido ligand of the silane la reacted with hexachlorodisilane by oxidative addition and cleavage of the Si-Si bond to give the new heterobicyclic derivative 7a which is held together by two different coordinative N-Si bonds. 
  Reference    Z. Naturforsch. 53b, 573—580 (1998); received March 30 1998 
  Published    1998 
  Keywords    Silicon, Germanium, Tin, Sulfur Diimides, Heterocycles, NMR Data 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0573.pdf 
 Identifier    ZNB-1998-53b-0573 
 Volume    53 
4Author    Markus Tampier, Dirk JohrendtRequires cookie*
 Title    B aC u 6G e2S8 -Ein Thiogermanat als Variante der L i3Bi-Struktur BaCu6Ge2S8 -A Thiogermanate as a Variant of the Li3Bi Structure  
 Abstract    BaCu6Ge2S8 was synthesized by direct reaction of the elements at 750°C and characteri­ zed by X-ray single crystal techniques. The thiogermanate crystallizes in a new orthorhombic structure type (a = 6.122(1) A, b = 12.084(3) A , c = 17.614(5) A; Pbcm, Z = 4). Isola­ ted [GeS4]4_ tetrahedra form a slightly distorted cubic face-centered (fee) arrangement. Ba-and Cu-atoms each occupy half the octahedral gaps (O G) of this " tetrahedra packing" . Fur­ ther Cu atoms fill the tetrahedral gaps (T G) completely. The compound can be written as Ba2<l/2 0 G,(Cu2)2<l/2<:)G)Cu8<7G)(GeS4)4 . Thus the structure o f BaCu6Ge2S8 can be derived from the Li^Bi type. The sulfur coordination o f the metal atoms (Cu tetrahedral or trigonal, Ba with CN 8) are realized by the spatial orientation of the [GeS4]4~ tetrahedra. Their centers nearly maintain the fcc-arrangement. This structure interpretation of BaCu6 Ge2S8 from the viewpoint o f a " filled tetrahedra packing" is discussed for further known thiogermanate compounds. 
  Reference    Z. Naturforsch. 53b, 1483—1488 (1998); eingegangen am 9. Juli 1998 
  Published    1998 
  Keywords    Chalcogenides, Germanium, Copper, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1483.pdf 
 Identifier    ZNB-1998-53b-1483 
 Volume    53 
5Author    Yoshitaka Matsushitab, MercouriG. KanatzidisRequires cookie*
 Title    Synthesis and Structure of I ^ G e S  
 Abstract    The compound Li4 GeS4 has been prepared as transparent, light yellow moisture-sensitive crystals. Li.(GeS4 belongs to the space group Pnma with a = 14.107(6) A, b = 7.770(3) A and c = 6.162(2) A. The crystal structure was solved by direct-methods. The final R and /?H-values are 1.85 and 1.65% for 866 observed reflections. The Li4 GeS4 structure has three crystallographically independent lithium sites and one germanium site. The lithium atoms adopt two different coordination types. The Lil atom is coordinated to five sulfur atoms in a square pyramidal geometry, while the Li2 and Li3 atoms have distorted tetrahedral coordination. The Ge atom is tetrahedrally coordinated by four sulfur atoms and is found as [GeS4 ]4-units. The anisotropic three-dimensional crystal structure of Li4 GeS4 is described. 
  Reference    (Z. Naturforsch. 53b, 23—30 [1998]; received October 10 1997) 
  Published    1998 
  Keywords    Lithium, Germanium, X-Ray Data, Crystal Structure, Raman Spectra 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0023.pdf 
 Identifier    ZNB-1998-53b-0023 
 Volume    53