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1983 (2)
1982 (1)
1979 (3)
1Author    B. Johannes, H. Brzezinka, H. BudzikiewiczRequires cookie*
 Title    Mass Spectroscopic Fragmentation Reactions, XXI [1] Factors Influencing the Loss of Xylene and Toluene from the Polyene Chain of Carotenoids  
 Abstract    By examining suitably substituted analogs of carotenoids the steric and electronic influences governing the elimination of xylene and toluene from the polyene chain have been clarified. 
  Reference    Z. Naturforsch. 34b, 300—305 (1979); received November 7 1978 
  Published    1979 
  Keywords    MS, Analysis, Carotenoids, Polyene Chain 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0300.pdf 
 Identifier    ZNB-1979-34b-0300 
 Volume    34 
2Author    Paraskevas Aslanidis, Joseph GrobeRequires cookie*
 Title    Alternativ-Liganden, XIV [1] Chelating Ligands with CE'Me2 and SiEMe2 Donor Groups  
 Abstract    Neue Chelatliganden des Typs (2-Me2E C6H4)Si(EMe2)Me2 (E, E == N, P, As; Me -CH3) Alternative Ligands, XIV [1] Novel Chelating Ligands of the Type (2-Me2E / C6H4)Si(EMe2)Me2 (E, E' = N, P, As; Me = CH3) 
  Reference    Z. Naturforsch. 38b, 280—288 (1983); eingegangen am 27. August/11. November 1982 
  Published    1983 
  Keywords    (E, E' = N, P, As); Synthesis, Spectroscopic Characterization (NMR, IR, MS) 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0280.pdf 
 Identifier    ZNB-1983-38b-0280 
 Volume    38 
3Author    Walter Maringgele, Anton MeilerRequires cookie*
 Title    Umsetzungen von Metall-und Metalloidverbindungen mit mehrfunktionellen Molekülen, XXIV [1] Synthese von Sulfonamidoboranen und Sulfonamidosilanen Reactions of Metal and Metalloid Compounds with Poly functional Molecules, XXIV [1] Synthesis of Sulfonamidoboranes and Sulfonamidosilanes  
 Abstract    The reaction of trimethylsilylsulfonamides with halodiorganylboranes leads to the corresponding sulfonamidoboranes and halotrimethylsilane. Trimethylsilylsulfonamides are prepared by reaction of the corresponding sulfonyl chlorides with primary amines, followed by the addition of chlorotrimethylsilane in the presence of excess triethylamine. 1 H, n B NMR spectra and mass spectra are reported. Bisher sind einige B-N-Heterocyclen mit exo-cyclischen Sulfonylgruppen untersucht worden [2-5]. Neben N-(Arylsulfonyl)borazinen (die jedoch mög-licherweise nicht monomer sind), Borazarofuro-pyridinen 0H I B \ N-SO2C6H4R Kürzlich wurden durch die Spaltung der Si-N-Bindung von Trimethylsilylamiden [6-8] bzw. Tri-methylsilylamidinen [9] monomere Amido-bzw. Amidinoborane nach R'-C-N Si(CH3)3 bzw. R,BX , t , R — C-N BR} XSi(CH3)3 (2) den Arylsulfonylhydrazonen O C=N-NH-SO2C6H4R v 0H \ OH FoC— C=N—R 3 I (CH3)3Si—N—R R|BX » • F3C—C=N-R' • XSi(CH3)3 R^B—N-R (3) erhalten. Die Si-N-Bindung wird durch Halogen-borane meist unter milden Bedingungen gespalten [10-13] und erscheint damit als günstiger Weg zur Darstellung von Sulfonamidoboranen. sind auch die entsprechenden Thiophen-analogen Verbindungen nach Ü H C=0 \ / B OH H2N-NH-SO2C6H4R OH dargestellt worden [3-5]. 
  Reference    Z. Naturforsch. 34b, 969—974 (1979); eingegangen am 11. April 1979 
  Published    1979 
  Keywords    Sulfonamidoboranes, Sulfonamidosilanes, NMR ( 11 B, ill), MS 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0969.pdf 
 Identifier    ZNB-1979-34b-0969 
 Volume    34 
4Author    Wolf-Walther Du Mont, Tevfik Severengiz, HansJoachim BreunigRequires cookie*
 Title    ^-Tolytelluro-dimethylstibane. A Molecule with the Tellurium-Antimony-Bond  
 Abstract    Tetramethyldistibane reacts with equimolar amounts of di-p-toly lditellur ide to yield quanti-tatively fj-tolyltellurodimethylstibane, the first molecule with a Te-Sb bond. The compound has been characterised by elemental analysis and by NMR and mass spectra. 
  Reference    Z. Naturforsch. 38b, 1306—1307 (1983); eingegangen am 5. Juli 1983 
  Published    1983 
  Keywords    MS, 125 Te NMR, Tellurium-Antimony Bond 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1306_n.pdf 
 Identifier    ZNB-1983-38b-1306_n 
 Volume    38 
5Author    Ekkehard Lindner, Sadek Trad, Sigurd Hoehne, Hans-Henning OetjenRequires cookie*
 Title    Präparative, spektroskopische und kristallographische Untersuchungen an Phosphinato-Komplexen des Rheniums mit verschiedenen einzähnigen Liganden Preparative, Spectroscopic and Crystallographic Investigations on Phosphinato Complexes of Rhenium with Various Unidentate Ligands  
 Abstract    The stable phosphinato complexes [^-R2P02Re(C0)3L]" (1, 2b-f) [L = THF (a), py (b), NH3 (c), P(C6H5)3 (d), AS(C6H5)3 (e), P(C6Hn)3 (f), 0(C2H5)2 (g)] are obtained by addition of the ligands L to the compounds 0-R2P02Re(C0)3]M (1, 2) [R = CH3 (1), C6H5 (2)] at 20-40 °C (1, 2c: —35 °C). 1, 2b, d, e are also formed when THF in 1, 2a is substituted by the ligands b, d, and e. The unstable ether adducts 1, 2g which result photochemically from Re2(CO)io and the acids R2P02H, are transformed to 1, 2 by elimination of ether. At 20 °C 1, 2 a react with liquid ammonia to give the ionic complexes [(0C)3Re(NH3)3][02PR2] (1, 2h). On the basis of their mass and vibrational spectra, and a crystallographic in-vestigation, the methyl [la-f] and phenyl compounds [2 a-f] are dimeric and oligomeric, respectively. The rhenium atoms are bridged via R2P02~ ligands (phosphinato-0,0'). la crystallizes monoclinic in the space group C2/m with Z = 2. Stabile, monomere Chelatkomplexe des Mangans und Rheniums mit zweizähnigen Carboxylat-oder Phosphinat-Liganden des Typs RCE2M(CO)3L bzw. 
  Reference    Z. Naturforsch. 34b, 1203—1212 (1979); eingegangen am 28. Mai 1979 
  Published    1979 
  Keywords    Phosphinato Complexes, Rhenium(I), MS, IR, Raman, X-Ray 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1203.pdf 
 Identifier    ZNB-1979-34b-1203 
 Volume    34 
6Author    Ekkehard Lindner, Michael SteinRequires cookie*
 Title    Darstellung, Eigenschaften und Reaktivität von 2-, 3-und 4-Chloracyl(diphenyl)phosphanoxiden Preparation, Properties and Reactivity of 2-, 3-and 4-Chloroacyl(diphenyl)phosphane Oxides  
  Reference    Z. Naturforsch. 37b, 407—411 (1982); eingegangen am 26. November 1981 
  Published    1982 
  Keywords    Chloroacyl(diphenyl)phosphanes, Diphosphorylated Alcohols, MS, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0407.pdf 
 Identifier    ZNB-1982-37b-0407 
 Volume    37