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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    Karl Häberle, Martin DrägerRequires cookie*
 Title    Germanium-haltige Heterocyclen  
 Abstract    , V I [1] Ph8Ge50 6, ein Germoxan aus bicyclisch verknüpften (G eO)4-Ringen Heterocyclic Systems Containing Germanium, V I [1] Ph8Ge5O ft, a Germoxane Formed by Bicyclic Connected (G eO)4-Rings The title compound l,3,3,5,7,7,10,10-octaphenyl-2,4,6,8,9,ll-hexoxa-l,3,5,7,ll-pentagerma-bicyclo[3.3.3]undecane is synthesized from PhGeCl3/Ph2GeCl2 and A g N 0 3 in aqueous acetone. The 13C N M R phenyl signals for bridges and bridge-heads are in the expected ratio of intensity 3:1. The crystal structure of Ph8Ge50 6 l/2 acetone has been determined and refined to R = 0.062. The asymmetric unit contains two independent bicyclic PhgGe50 6 cages and one disordered crystal acetone. The total symmetry of both Ph8Ge50 6 molecules is near to D 3, the symmetry of the individual 8-membered rings (G e O)4 is near to C 2 (distances Ge —O 172—180, Ge —C 191-195 pm, angles G e -O -G e 128.0-133.8, O -G e -O 107.5-110.6°). 
  Reference    Z. Naturforsch. 39b, 1541 (1984); eingegangen am 13. April/11. Juli 1984 
  Published    1984 
  Keywords    Germanium, Bicyclic Cage, Ring Conformation 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-1541.pdf 
 Identifier    ZNB-1984-39b-1541 
 Volume    39 
3Author    K. Diehl, D. Khodadadeh, J. Kummer, SträhleRequires cookie*
 Abstract    Upon use of a synthetic method reported earlier by us respective alloys of Na/Sn, Na/Ge and Na/Sb are dissolved in ethylene-diamine and the title compounds precipitated from the solutions in high yield. By recrystal-lisation well shaped, stable crystals are obtain-ed. The crystal structure of [Na4 • 7 en]Sn9 confirms the presence of a Sn9 4 ~-polyhedron which had been suggested by us on the basis of other investigations. The Sn9 4_ -polyhedron may be described as a distorted tricapped trigonal prism. Ethylenediamine is coordi-nated to Na+-ions exclusively. 
  Reference    (Z. Naturforsch. 31b, 522—524 [1976]; eingegangen am 16. Februar 1976) 
  Published    1976 
  Keywords    Polyanionic Compounds, Germanium, Tin, Antimony, Crystal Structure 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0522_n.pdf 
 Identifier    ZNB-1976-31b-0522_n 
 Volume    31 
4Author    Werner Thronberens, Hans-Uwe SchusterRequires cookie*
 Title    Na6Pt8Ge8, eine ternäre intermetallische Phase mit tetraedrischen Platinclustern NaöPtsGes, a Ternary Intermetallie Phase with Tetrahedral Platinum Clusters  
 Abstract    Na6PtsGe8 was prepared from the elements; it crystallizes in a cubic structure, space group I43m, a= 761.4 pm. The phase contains two structural elements: The Pt-atoms form tetrahedra, which are covered by bigger Ge-tetrahedra. The Na-atoms build a 3-D-network consisting of chains crossed under right angels. 
  Reference    Z. Naturforsch. 34b, 781—783 (1979); eingegangen am 7. Februar 1979 
  Published    1979 
  Keywords    Ternary Phase, Sodium, Platinum, Germanium, Crystal Data 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0781.pdf 
 Identifier    ZNB-1979-34b-0781 
 Volume    34 
5Author    Bernt Krebs, Hans-Joachim WallstabRequires cookie*
 Title    Thio-hydroxoanionen des Germaniums: Darstellung, Struktur und Eigenschaften von Na2GeS2(OH)2 * 5 H20 Thio-hydroxo Anions of Germanium: Preparation, Structure and Properties of Na2GeS2(OH)2 * 5 H20  
 Abstract    Pure thio-hydroxo-germanates can be prepared from aqueous solutions by reactions of stoichiometric amounts of either sodium sulfide and Ge02, or NaOH and GeS2. The preparation of colourless crystalline Na2GeS2(OH)2 • 5 H20 is reported. The compound is characterized by a single-crystal X-ray structure analysis. It is orthorhombic, space group Pbcn, with a = 10.752(2), 6= 13.787(2), c = 14.150(2) A. The structure contains novel monomeric GeS2(OH)2 2-anions with Ge-S bond distances of 2.150(1) and 2.145(1) Ä and with Ge-0 lengths of 1.809(3) and 1.815(3) A. An extensive S • • • HO-and O -HO-hydrogen bond system connects the anions with the octahedrally coordinated Na + ions. The vibra-tional spectra are reported. The symmetric GeS2 andGe02 stretching vibrations in the anion are observed at 415 and 618 cm -1 . 
  Reference    Z. Naturforsch. 36b, 1400—1406 (1981); eingegangen am 14. Mai 1981 
  Published    1981 
  Keywords    Thiogermanates, Thio-hydroxo Anions, Crystal Structure, Germanium 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1400.pdf 
 Identifier    ZNB-1981-36b-1400 
 Volume    36 
6Author    Ludwig Roß, Martin DrägerRequires cookie*
 Title    Phases of Decaphenylcyclopentagermane (Ph2Ge)s [1]  
 Abstract    (Pb^Ges) can be obtained from solutions in five crystalline phases, two pure and three including solvent of crystallization. This is lost at 70 °C. At 190 °C all phases transform into a plastic crystalline phase. For this tetragonal phase a gear wheel model for librations of the molecules is developed. The crystal structure of triclinic (Ph2Ge)s has been determined and refined to R = 0.050. The molecule has a flexible conformation in accordance with a better solubility than exhibited by the homologous rings (Ph2Ge)4 and (Ph2Ge)6 containing rigid normal conformations. The arrangement of phenyl groups is either parallel or perpendicular for both cases intra-and intermolecular. The compound (Ph2Ge)6 attains a plastic crystalline state at 346 °C. 
  Reference    Z. Naturforsch. 38b, 665—673 (1983); eingegangen am 28. Januar 1983 
  Published    1983 
  Keywords    Germanium, Homocycle, Conformation, Plastic Crystalline State 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0665.pdf 
 Identifier    ZNB-1983-38b-0665 
 Volume    38 
7Author    G. Alina, S. Z. Aitseva11 ', SergeyS K Arlova, ElenaS A Lekseyevaa, LeonidA A Slanova, EvgeniV A Vtom Onovb, JörgL. OrberthbRequires cookie*
 Title    -Allylgermatrane. Synthesis, Structure and Reaction with Diazomethane  
 Abstract    Reaction of allyltribromogermane (2), readily available from dibrom o(l,4-dioxane)ger-manium(II) (1) and allylbromide, with tris(2-tributylstannoxyethyl)-amine (4) gives 1-allylgermatrane (3) in almost quantitative yield. 3 crystallizes from /7-pentane as a colourless crystalline solid which was characterized by 'H and ,3C NMR spectroscopy and by an X-ray crystal structure study. The "atrane" skeleton shows a strong conformational disorder; the Ge-N distance of 2.208(3) A suggests the presence of a coordinative Ge-N bond. Treatment of 1 -allylgermatrane (3) with CH2N2 in the presence of catalytic amounts of Pd(OAc)2 affords 1-cyclopropylmethylgermatrane (5) in high yield. 
  Reference    (Z. Naturforsch. 52b, 30—34 [1997]; received August 16 1996) 
  Published    1997 
  Keywords    Germanium, Germatrane, Cyclopropanation, X-Ray, NMR Spectra 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0030.pdf 
 Identifier    ZNB-1997-52b-0030 
 Volume    52 
8Author    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 
9Author    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 
10Author    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 
11Author    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