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1988 (1)
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1Author    Nils Wiberg, Edwin Kühnel, Klaus Schurz, Horst Borrmann, Arndt SimonRequires cookie*
 Title    Synthesen und Strukturen der sterisch überladenen Disiloxane und Disilazane (fBu 3 Si) 2 0, (fBu 3 Si) 2 NH, (fBu 3 SiNHSifBu 2 ) 2 0 [1] Syntheses and Structures of the Sterically Overloaded Disiloxanes and Disilazanes (/Bu 3 Si) 2 0, (fBu 3 Si) 2 NH, (rBu 3 SiNHSirBu 2 ) 2 0 [1]  
 Abstract    Hexa-terf-butyldisiloxane (rBu 3 Si) 2 0 (2), hexa-rerr-butyldisilazane (d3u 3 Si) 2 NH (3), and the disiloxane (rBu 3 SiNHSuBu 2) 2 0 (4) are prepared from bis(silyl)triazene /Bu 3 SiN=N-NHSirBu 3 by reaction with water (2) and by thermolysis (3), or from silanimine rBu 2 Si=NSirBu 3 by reaction with water (4). Structures of 2—4 have been determined by X-ray crystallography (for data cf. Tables II). As a consequence of the bulkiness of the silyl groups, the heavy atom frameworks SiOSi in 2 and 4 are linear, and the SiNSi angles in 3 (167 ± 2°) and 4 (157.1°) are comparatively large. 
  Reference    Z. Naturforsch. 43b, 1075—1086 (1988); eingegangen am 4. Mai 1988 
  Published    1988 
  Keywords    Syntheses, Molecular and Crystal Structures, Sterically Overloaded Disiloxanes and Disilazanes 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1075.pdf 
 Identifier    ZNB-1988-43b-1075 
 Volume    43 
2Author    Jochen Ellermann, Martin Lietz, Peter Merbach, Gerhard Thiele, Gerd ZoubekRequires cookie*
 Title    Chemie polyfunktioneller Liganden, 53 [1] Über methyl-substituierte Triarsa-trioxa-, Triarsa-trithia- und Triarsa-triaza-adamantane und über den stark aufgeweiteten Adamantan-Käfig im Schwefel-Derivat Chemistry of Polyfunctional Ligands, 53 [1] About Methyl-substituted Triarsa-trioxa-, Triarsa-trithia-and Triarsa-triaza-adamantanes and about the Strongly Spread Adamantane Cage in the Sulfur Derivative  
 Abstract    The reaction of l,l,l-tris(diiodarsinomethyl)ethane, CH3C(CH2Asl2)3 (1), with H2O, H2S and CH3NH2 in THF gives the adamantane cage compounds CH3C(CH2ASO)3 (4), CH3C(CH2ASS)3 (5) and CH3C(CH2ASNCH3)3 (6) in high yields. The crystal structure of 5 has been determinated by X-ray diffraction. The unit cell (space group P2i/w) contains 4 isolated molecules in a cubic closest packing. The heteroadamantane 5 has an enlarged cage structure with extremely spread C-C(H2)-As bond angles of 124° at the methylene carbon atoms. Some pharmacological properties of the adamantane derivatives 4 and 5 have been studied. All compounds have been characterized by mass spectrometry and infrared, Raman and X H NMR spectroscopy. 
  Reference    Z. Naturforsch. 34b, 975—982 (1979); eingegangen am 26. März 1979 
  Published    1979 
  Keywords    Heteroadamantanes, Vibrational Spectra, Mass Spectra, X H NMR, Molecular and Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0975.pdf 
 Identifier    ZNB-1979-34b-0975 
 Volume    34 
3Author    New Monocyclic Acyloxyfluoroboranes, Herbert Binder, Walter Matheis, Hans-Jörg Deiseroth, Han Fu-Son, ProfH. Dr, W. Binder, MatheisRequires cookie*
 Title    Über neue monocyclische Acyloxyfluoroborane 2.2.6.6-Tetrafluoro-1.4-dialkyl-1.3.5-trioxa-1.6-diboracyclohexene: Darstellung, Molekül-und Kristallstruktur  
 Abstract    Acyloxyfluoroboranes Trimeric alkoxydifluoroboranes (F2BOR)3 (2) react with organic acid anhydrides by substitution of a ring group OR forming monocyclic acyloxyfluoroboranes of the type 2,2,6,6-tetrafluoro-l,4-dialkyl-l,3,5-trioxa-2,6-diboracyclohexene (3). The X-ray crystal structure determination of 3a shows two conformational isomers: two planar and two non-planar six-membered rings are present in the unit cell. The ring conformation is influenced by weak intermolecular H — F interactions. 
  Reference    Z. Naturforsch. 38b, 554—558 (1983); eingegangen am 15. November 1982/26. Januar 1983 
  Published    1983 
  Keywords    6, 6-Tetrafluoro-l, 4-dialkyl-l, 3, 5-trioxa-2, 6-diboracyclohexenes: Synthesis, Molecular and Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0554.pdf 
 Identifier    ZNB-1983-38b-0554 
 Volume    38 
4Author    Winfried Hinrichs, Jürgen Kopf, Klaus-Wilhelm Stender, Günter KlarRequires cookie*
 Title    Selbststapelnde Systeme, I 4 a Compound with Radical Cations and Polyiodide Chains  
 Abstract    ,4' ,5,5'-Tetramethoxy-2,2'-dithiobiphenyl-Iod (6/7), eine Verbindung mit Radikalkationen und Polyiodidketten Selfstacking Systems, I 4,4',5,5'-Tetramethoxy-2,2'-dithiobiphenyl-Iodine (6/7), 
  Reference    (Z. Naturforsch. 40b, 39—44 [1985]; eingegangen am 20. September 1984) 
  Published    1985 
  Keywords    4, 4', 5, 5'-Tetramethoxy-2, 2'-dithiobiphenyl-Iodine (6/7), Molecular and Crystal Structure, Self-stacking Systems, Polyiodide Chains 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0039.pdf 
 Identifier    ZNB-1985-40b-0039 
 Volume    40