Go toArchive
Browse byFacets
Bookbag ( 0 )
'2' in keywords Facet   section ZfN Section B:Volume 033  [X]
Results  7 Items
Sorted by   
Publication Year
1978 (7)
1Author    Marianne Baudler, Elmar TollsRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 84 [1] 1.2.3-Trimethyl  
 Abstract    The reaction of K2(PMe)4 • 2 THF with eis-1,2-dichloroethylene yields the hitherto unknown cyclocarbaphosphanes 1,2,3-trimethyl-1,2,3-triphosphole, (PMe)3C2H2 (1), and 2,3,4,6,7,8-hexamethyl-2,3,4,6,7,8-hexaphosphabicyclo[3,3,0]octane, (PMe)6C2H2 (2). Besides, (PMe)s, (PMe)4CH2, (PMe)3C2Hi, and the new six-membered heterocycle (PMe)2(C2H2)2 are formed. The cyclocarbaphosphanes 1 and 2 were characterized by elemental analysis, mass, IR, Raman, and NMR spectra. For the bicyclic compound 2 two diastereomers were obtained and separated. They differ in the position of the methine hydrogens and of the methyl substituents (eis-2 and trans-2). Compound 2 is also produced in the reaction of K2(PMe)4 • 2 THF with £rans-l,2-dichloroethylene whereas with 1,1,2,2- tetrachloroethane mainly (PMe)s is formed. In 1 and in each of thefive-memberedrings of cis-2 and trans-2 the methyl substituents at adjacent phosphorus atoms are situated on opposite sides of the ring. 
  Reference    Z. Naturforsch. 33b, 691—697 (1978); eingegangen am 24. April 1978 
  Published    1978 
  Keywords    3-Trimethyl-1, 2, 3-triphosphole, (PMe)3C2H2, and 2, 3, 4, 6, 7, 8-Hexamethyl-2, 3, 4, 6, 7, 8-hexaphosphabicyclo[3, 3, 0]oetane, (PMe)6C2H2 l, 2, 3-Trimethyl-l, 2, 3-triphosphole, l, 2, 3-Trimethyl-cyclo-4, 5-dicarba-4-en-l, 2, 3-triphosphane, Hexaphosphabicyclo[3, 3, 0]octanes (eis and trans), Cyclocarbaphosphanes, Heterocyclophosphanes 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0691.pdf 
 Identifier    ZNB-1978-33b-0691 
 Volume    33 
2Author    NarendraS. SridharaRequires cookie*
 Title    Thermal Decomposition of P,P-diphenyl-N-benzyl-phosphinothioic Amide and P,P-diphenyl-N-methyl-phosphinothioic Amide  
  Reference    Z. Naturforsch. 33b, 212—213 (1978); received July 1 1977 
  Published    1978 
  Keywords    2, 2, 4, 4, 6, 6-Hexaphenylcyclophosphazatriene, Diphenylphosphinothioic Amide, 113355-Hexaphenyl-1 -methylaminotriphosphazene-5-sulphide, P, P-Diphenyl-N-dimethylphosphinothioic Amide 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0212.pdf 
 Identifier    ZNB-1978-33b-0212 
 Volume    33 
3Author    Ringverengungsreaktionen Von Chinolintrionen, Helga Wittmann, Friedrich GünzlRequires cookie*
 Title    Synthesen von Heterocyclen, CCVIII [1] Zur Chemie der vicinalen Triketone, XI [2]  
 Abstract    -lH,5H-benzo [ij] quinolizine (I) does not react with 2-aminopyridine to give a Schiff base [2], but reacts by ringcontraction to the spiro-indolone 1/1, which can be hydrolysed to l-(2-pyridyl-amino)l,2,5,6-tetrahydro-4H-pyrrolo[3,2,l-ij]quinoline-2-one (2/1). In the same way the reaction of I resp. 1-phenyl-quinolinetrione (LI) with tfert-butylamine in aliphatic alcohols yields by ringcontraction the indolone acid esters 5 a-c. Reaction of I with £er£-butylamine without solvent forms the ringcontracted amide 5c/I. 
  Reference    Z. Naturforsch. 33b, 1540—1546 (1978); eingegangen am 12. Juli 1978 
  Published    1978 
  Keywords    Quinolinetriones, Ringcontractions, 2-Aminopyridine, 2, 3-Diaminopyridine, Zerf-Butylamine l, 2, 3-Trioxo-2, 3, 6, 7-tetrahydro 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1540.pdf 
 Identifier    ZNB-1978-33b-1540 
 Volume    33 
4Author    W. L. Driessen, P.L A EverstijnRequires cookie*
 Title    Metal(II) Complexes of 1,2,5-Oxadiazole  
 Abstract    A series of new coordination compounds is reported with 1,2,5-oxadiazole (ODZ) as the ligand, viz. [M(ODZ)3](SbCl 6)2 with M = Mg(II), Mn(U), Fe(II), Co(II), Ni(II), and Zn(II). The metal ions are in a regular octahedral environment of six nitrogen atoms. The ligands function as bidentate bridges between the metal ions. 
  Reference    Z. Naturforsch. 33b, 1120—1123 (1978); received June 12 1978 
  Published    1978 
  Keywords    Transition Metal Ions, 1, 2, 5-Oxadiazole, Ligand Field Spectra, IR 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1120.pdf 
 Identifier    ZNB-1978-33b-1120 
 Volume    33 
5Author    M. VeithRequires cookie*
 Title    Cyclische Diazastannylene, II 1 Intermolekulare Lewis-Säure-Base-Addukte bei 1.3.2.4A 2 -Diazasilastannetidinen Cyclic Diazastannylenes, II 1 Intermolecular Lewis-Acid-Base Adducts of 1, 3,2,4A 2 -Diazasilastannetidines  
 Abstract    -diazasilastannetidines can be prepared as mono-mers (organyl = <erf-butyl) or dimers (organyl = isopropyl) in nonpolar solvents, depending on the organic nitrogen substituent. The formation of the dimer, which is due to an intermolecular Lewis-acid-base interaction of Sn(II) with nitrogen, can be initiated by solidification. When the tertf-butyl compound is cooled below 0 °C two crystalline modi-fications are found: a monoclinic phase (C 2/c; a= 10.655(5); b = 24.75(1); c = 17.334(9) Ä; ß = 106.9(1)°) and a triclinic phase (P I; a = 10.68(1); b = 13.51(1); c = 12.36(1) A; a = 96.2(1); ß = 102.6(1); y = 118.4(1)°). The crystal structures turn out to be built of dimeric and monomeric units in the first case and presumably only dimeric species in the second case. The isopropyl derivative crystallizes in the space group P 2i/b (a = 10.77(1); b= 12.14(2); c = 11.15(2) A; ß = 120.2(2)°) with only dimeric units being present, as in the liquid. Interrelationships between the three structures are discussed. 
  Reference    (Z. Naturforsch. 33b, 1—6 [1978]; eingegangen am 5. September/6. Oktober 1977) 
  Published    1978 
  Keywords    Diazastannylenes, Solid State, X-ray, Crystal Structure, NMR l, 3-Diorganyl-2, 2-dimethyl-I, 3, 2, 4A 2 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0001.pdf 
 Identifier    ZNB-1978-33b-0001 
 Volume    33 
6Author    George Sosnovsky, Maria KoniecznyRequires cookie*
 Title    Utilization of the Sterically Hindered Base, 4-Hydroxy-2,2,6,6-tetramethylpiperidine, as a Hydrogen Halide Acceptor  
  Reference    Z. Naturforsch. 33b, 792—796 (1978); received March 17 1978 
  Published    1978 
  Keywords    Dehydrobromination, Preparation of Alkenes, Quaternization of Amines, Sterically Hindered Bases, 4-Hydroxy-2, 2, 6, 6-tetramethylpiperidine 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0792.pdf 
 Identifier    ZNB-1978-33b-0792 
 Volume    33 
7Author    Marianne Baudler, Anna Marx, Josef HahnRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 80 [1] Über die Phosphor-Bor-Dreiringverbindung (f-BuP)2BN(i-Pr)2 Contributions to the Chemistry of Phosphorus, 80 [1] About the Phosphorus Boron Three-Membered Ring Compound (£-BuP)2BN(i-Pr)2  
  Reference    Z. Naturforsch. 33b, 355—360 (1978); eingegangen am 18. Januar 1978 
  Published    1978 
  Keywords    l, 2-Di-£e^butyl-3-di-iso-propylamino-l, 2, 3-diphosphaborirane, Heterocyclophosphanes, Three-membered Ring Compounds, Cyclo-3-bora-l, 2-diphosphanes, Diphosphaboracyclopropanes 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0355.pdf 
 Identifier    ZNB-1978-33b-0355 
 Volume    33