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Facet   section ZfN Section B:Volume 030  [X]
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1975 (239)
101Author    Requires cookie*
 Title    Untersuchungen an Chinolacetaten, IV 1 Dienon-Phenol-Umlagerung von o-Chinolacetaten in Gegenwart von Benzolderivaten (2.: Diskussion der Ergebnisse)  
 Abstract    Quinol A cetates, IV 1: D ienone-phenol R earran g em en t of o-Quinol A cetates in th e Presence of B enzene D erivatives (2.: D iscussion of th e Results) H . B u d z i k i e w i c z u n d J . G u n a w a n Quinol Acetates, Dienone Phenol Rearrangement Reaction of 2-acetoxy-cyclohexa-3,5-dienones ("quinol-acetates") with B F 3 or (CH3C 0)20 /B F 3 in the presence of benzene derivatives (mesitylene, mesitol, 1,3-dimethoxy-benzene, 1,3,5-trimethoxybenzene) yields biphenyl and diphenyl methane derivatives. The reasons for their formation are discussed. 
  Reference    (Z. Naturforsch. 30b, 437—440 [1975]; eingegangen am 3. Februar 1975) 
  Published    1975 
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 Identifier    ZNB-1975-30b-0437 
 Volume    30 
102Author    N.Requires cookie*
 Title    Reactions w ith 5-Substituted-l,3-thiazolidine-2,4-dithiones Heterodiene Syntheses  
 Abstract    a z m i A b d E l L a t i f K a s s a b , S a n a a O s m a n A b d A l l a h , 
  Reference    (Z. Naturforsch. 30b, 441 [1975]) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0441.pdf 
 Identifier    ZNB-1975-30b-0441 
 Volume    30 
103Author    J., A. V.Requires cookie*
 Title    The  
 Abstract    F o rm atio n o f Com plexes w ith Citric Acid, I T he F o rm atio n of Com plexes betw een Citric Acid an d Alum inium G ü n t h e r W i e s e Complexes, Aluminium Citrate, Potentiometry, Mathematical Analysis With a simple mathematical m ethod the three-component-system eH 3Ci (citric acid) + fAlCl3 + gNaOH was analysed and the formation of complexes between citrate and aluminium calculated. Mixtures of eH 3Ci + fAlCl3, with e/f ratios from 0 to 2.5 were titrated with NaOH. For each titrated mixture which existed of eH 3Ci + fAlCl3 the coefficient g(NaOH) was found from the inflection points of the titration curves. When the eH 3Ci/fAlCl3 molar ratios were plotted against the corresponding molar ratios of gNaOH/fAlCl3, linear functions were obtained from which the following three dehydrated complexes were calculated: [Al3OHCi3]e from the first inflection point at pH between 3.0-3.5, 
  Reference    (Z. Naturforsch. 30b, 446—453 [1975]; eingegangen am 10. Dezember 1974/24. Januar 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0446.pdf 
 Identifier    ZNB-1975-30b-0446 
 Volume    30 
104Author    G. K.Requires cookie*
 Title    Magnetic Investigations of Ternary Chromium (III)-fluorides ACrF4  
 Abstract    Fluorides, Low Temperature Susceptibilities, Antiferromagnetism Powder susceptibilities in the temperature range 4.2 to 295 °K are reported for the antiferromagnetic compounds ACrF4 (A = N a , K, Rb, Cs, Tl) and K 2Cr5F 17. 
  Reference    (Z. Naturforsch. 30b, 454—455 [1975]; eingegangen am 27. Februar 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0454_n.pdf 
 Identifier    ZNB-1975-30b-0454_n 
 Volume    30 
105Author    F. K., A. M.Requires cookie*
 Title    Matrix Isolation and Isotopic Substitution Tech­ nique: Germanium Isotopic Splitting P attern of the v3(F2) Mode of Ge35Cl4 and Chlorine Isotopic Splitting P attern of 74Ge35Clw37Cl4-n  
 Abstract    The matrix isolation spectrum of germa­ nium tetrachloride in the region of the v3(F2) vibration has been measured. Applying the isotopic substitution technique the spectrum of the normal sample could be interpreted. The frequencies of the different isotopic species have been assigned. 
  Reference    (Z. Naturforsch. 30b, 456—457 [1975]; eingegangen am 24. Februar 1975) 
  Published    1975 
  Keywords    Matrix Isolation, Isotopic Substitution Technique, Germanium Tetrachloride, Isotopic Splitting Pattern, IR Spectra 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0456_n.pdf 
 Identifier    ZNB-1975-30b-0456_n 
 Volume    30 
106Author    Requires cookie*
 Title    New Derivatives of Sulfurhexafluoride. Pentafluorosulfuroxidedifluorideimide F 5S -N S (0)F 2 and Pentafluorosulfurdimethylamide F 5S-N(CH3)2  
 Abstract    Pentafluorsulfuroxidedifluorideimide, Pentafluorsul -furdimethylamide N S F 3 reacts with OSF4 to give F 5S -N SO F 2 which hydrolyses with alkali to the ion [F5S -N S 0 2F]~. From N S F 2-N (C H 3)2 and SF 4 or OSF4 only F 5S-N (C H 3)2 is received to ­ gether with decomposition products N SF resp. (NSOF)3. 
  Reference    (Z. Naturforsch. 30b, 458—459 [1975]; eingegangen am 22. Januar 1975) 
  Published    1975 
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 Identifier    ZNB-1975-30b-0458_n 
 Volume    30 
107Author    Requires cookie*
 Title    nitrogen analogues of S 0 3. With NN'-Bis- (trimethylsilyl)sulfurdifluoriddiimide F 2S( = N -SiM e3)2 (Me3S n -)2N -C H 3 forms the nitrogen analogue of sulfuric acid (Me3S i-N = )2S[NMeSnMe3]2. Sulfur-Nitrogen-Silicon Compounds, Sulfur-Nitrogen- Silicon-Tin Compound N N 'N " -Tris (trimethylsilylimido )sulfur S( = NSiMe3)3 reacts with Triflu oraceticacid- anhydride to (F3C -C (0)-N = )2S = N -SiM e3 and F 3C -C (0 )-N = S ( = N -SiM e3)2 which are  
  Reference    (Z. Naturforsch. 30b, 460—461 [1975]; eingegangen am 14. Februar 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0460_n.pdf 
 Identifier    ZNB-1975-30b-0460_n 
 Volume    30 
108Author    Requires cookie*
 Title      
 Abstract    The parameters of complete X-ray struc­ ture determinations are given for the fluorides R b2N aF eF 6 and R b2K F eF 6 (cubic), Cs2NaCrF6 and Cs2N aF eF 6 (hexagonal-rhom-bohedral) and Cs2LiGaF6 (hexagonal). Space group and lattice constants of the monoclinic cyanides Cs2BFe(C N)6 (B = Na, K, Rb) are reported as well. 
  Reference    (Z. Naturforsch. 30b, 462—464 [1975]; eingegangen am 27. Februar 1975) 
  Published    1975 
  Keywords    Fluorides, Cyanides, Structure Determination 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0462_n.pdf 
 Identifier    ZNB-1975-30b-0462_n 
 Volume    30 
109Author    Requires cookie*
 Title    Darstellung und Isolierung von Stiekstofftribromid NBr3 und Stickstoffdibromidmonojodid NBr2J Preparation and Isolation of Nitrogentribromide N Br3 and Nitrogendibromidemonoiodide N B r2I  
 Abstract    J o c h e n J a n d e r , J ü r g e n K n a c k m u s s und K l a u s -U l r i c h T h i e d e m a n n 
  Reference    (Z. Naturforsch. 30b, 464—465 [1975]; eingegangen am 27. Februar 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0464_n.pdf 
 Identifier    ZNB-1975-30b-0464_n 
 Volume    30 
110Author    Requires cookie*
 Title    Catalytic Hydrogenation of U nsaturated Compounds with H 2PtC l6-SnCl2 * 2 H ,0 in Acetic Acid  
 Abstract    W a l t e k S t r o h m e ie r und M a g d a le n a P f ö h l e r A hydrogenation catalyst, operating under mild conditions can be prepared by dissolving H 2PtC l6 and SnCl2 • 2 H 20 in acetic acid. After injection of an unsaturated compound under a H 2-atmosphere the active m oiety of the catalyst is generated. No active m oiety of catalyst is formed if the compound has a triple bond. But acetylenic derivatives are hydrogenated if the active m oiety of the catalyst is first produced by hydrogenation of cyclohexene. 
  Reference    (Z. Naturforsch. 30b, 466—467 [1975]; eingegangen am 27. Januar 1975) 
  Published    1975 
  Keywords    Catalysis, Hydrogenation, Unsaturated Compounds 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0466_n.pdf 
 Identifier    ZNB-1975-30b-0466_n 
 Volume    30 
111Author    Requires cookie*
 Title    Hydrogenation of Acrylic Acid E thyl E ster with Catalyst-System NiCl2 + N aB H 4 in Dimethylformamide  
 Abstract    Hydrogenation, Catalysis, Acrylicethylester B y reaction of NiCl2 or NiCl2 • 6 H aO with N aB H 4 in dimethylformamide an active hydrogenation catalyst, working under mild conditions is produced. Methods for prepara­ tion of catalyst, using acrylicethylester as an unsaturated compound are described. R e­ action rates r up to 26 (mMol • l-1 • m in-1) were found. 
  Reference    (Z. Naturforsch. 30b, 468—470 [1975]; eingegangen am 27. Januar 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0468_n.pdf 
 Identifier    ZNB-1975-30b-0468_n 
 Volume    30 
112Author    Requires cookie*
 Title    Über Isopolymolybdatfeststoffe und deren Beziehung zu Isopolymolybdationen in wäßriger Lösung* Concerning Solid Isopolym olybdates an d th e ir R elation to Isopolym olybdate Ions in Aqueous Solution  
 Abstract    After a brief discussion on the output capacity of the methods used for the study of the isopolymetalates, a classification and characterization of the solid isopolymolybdates obtainable from aqueous solution is given, and the relation of the solid isopolymolybdates to the isopolymolybdate ions in solution is studied. A correlation between the occurrence or non-occurrence of a species in a solid and in its solution detectable by Raman spectro­ scopy, the solubility of the solid, and the time necessary for the formation of the solid was found. This gives important informations on the mechanisms of formation of the iso-polym etalate ions. The m ost remarkable result of this investigation is that contrary to the view of the majority of the papers on this subject the octamolybdate ion Mo80 264_ having the structure found by L i n d q v i s t does not occur in important quantities in solution at room temperature. For setting up a reaction scheme on the isopolymolybdates only very few of the confusing multiplicity of the papers give evidentiary informations. Most of the papers are overinterpreted. 
  Reference    (Z. Naturforsch. 30b, 471—484 [1975]; eingegangen am 21. Februar 1975) 
  Published    1975 
  Keywords    Isopolyanions, Isopolymolybdates, Fingerprint Raman Spectroscopy, Reaction Mechanisms 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0471.pdf 
 Identifier    ZNB-1975-30b-0471 
 Volume    30 
113Author    S.K ARequires cookie*
 Title    Conductometric Studies on the Interaction of Some of the Lanthanon Nitrates with Monofunctional Bidentate Schiff Bases  
  Reference    (Z. Naturforsch. 30b, 485 [1975]) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0485.pdf 
 Identifier    ZNB-1975-30b-0485 
 Volume    30 
114Author    Requires cookie*
 Title    Die reversible Dimerisierung von o-Phenylendioxydimethylsilan als Modell für die Oligomerisierung ringgespannter Kieselsäureester  
 Abstract    The Reversible Dimerisation o f o-Phenylenedioxydimethylsilane -an Example for the Oligomerisation Reactions o f Ring-strained Organosiliconates H e i n r i c h M e y e r , G ü n t e r N a g o r s e n u n d A r m i n W e i s s o-Phenylenedioxydimethylsilane, Dimerisation, Equilibrium Constants, Dimerisation Enthalpy, 6,6,13,13-Tetramethyldibenzo(d,i)[5,7,12,14,6,13]tetraoxadisilecin 
  Reference    (Z. Naturforsch. 30b, 488—490 [1975]; eingegangen am 24. März 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0488.pdf 
 Identifier    ZNB-1975-30b-0488 
 Volume    30 
115Author    Requires cookie*
 Title    Die Kristallstruktur von CsGaS2  
 Abstract    Crystal Structure, Ternary Sulfides, Chain Structure Colourless needles of the compound CsGaS2 were obtained by the reaction of cesium carbonate with gallium oxide at 850 °C under a stream of H 2S. Structural investigations of (100) twinned crystals revealed an atomic arrangement isotypical with RbFeS2. Space 
  Reference    (Z. Naturforsch. 30b, 491—493 [1975]; eingegangen am 16. April 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0491.pdf 
 Identifier    ZNB-1975-30b-0491 
 Volume    30 
116Author    Requires cookie*
 Title    Die Struktur der Phase Na3 7Sn (« N a 15Sn4)  
 Abstract    Intermetallic Compound, Sodium Stannide The crystal structure of N a3_ 7Sn, earlier reported as Na4Sn and N a15Sn4, has been determined. N a 3 7Sn crystallizes orthorhombic, space group Pnma -Dg®, a = 9-82 ± 0.02 A, b = 5.57 ± 0.01 A, c = 22.79 ± 0.04 A. The Sn-atoms are isolated with respect to each other. The packing of atoms is less dense as in N a1 5 Pb4. 
  Reference    (Z. Naturforsch. 30b, 494—496 [1975]; eingegangen am 13. März 1975) 
  Published    1975 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0494.pdf 
 Identifier    ZNB-1975-30b-0494 
 Volume    30 
117Author    G. H., W.Requires cookie*
 Title    Isotopieeffekte in der Grenzschicht anorganischer Lösungen Isotope Effects at the Surface o f Inorganic Solutions  
 Abstract    Isotope effects were investigated at the surface of aqueous lithium and calcium salt solutions. The dependence on the temperature in the gas phase was determined. The surfaces of the solutions were isolated by spray experiments. In the case of calcium salt solutions an enrichment of the lighter isotope 40Ca in relation to the heavier isotopes 44Ca and 48Ca was found at the solution surface. The experiments with lithium fluoride and lithium iodide gave inverse isotope effects. The calcium isotope effect could be qualitatively explained by the Gibbs theorem. The isotope separation of lithium possibly can be referred to the more covalent bonding character than the ionic one of lithium compounds at the solution surface. 
  Reference    (Z. Naturforsch. 30b, 497—502 [1975]; eingegangen am 27. November 1974/28. Februar 1975) 
  Published    1975 
  Keywords    Surface Isotope Effects, Lithium, Calcium, Thermal Ionization Mass Spectrometry 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0497.pdf 
 Identifier    ZNB-1975-30b-0497 
 Volume    30 
118Author    Requires cookie*
 Title    Zur Reaktion von Azidoformamidiniumchlorid mit Triphenylphosphin  
 Abstract    The Reaction of Azidoformamidinium Chloride with Triphenylphosphine W o l f g a n g B u d e r 1 und A r m i n S c h m id t Azide Reactions, St a u d i n g e r Reaction, Vibrational Spectra Azidoformamidinium chloride reacts with triphenylphosphine to yield the triphenyl­ phosphine imino azo formamidinium chloride (1). 1 eliminate nitrogen to give triphenyl­ phosphine imino formamidinium chloride (2). view of the structure. 
  Reference    (Z. Naturforsch. 30b, 503—505 [1975]; eingegangen am 13. März/25. April 1975) 
  Published    1975 
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 Identifier    ZNB-1975-30b-0503 
 Volume    30 
119Author    J. G.Requires cookie*
 Title    Molekülstrukturen von Phosphorverbindungen, IV  
 Abstract    Bis(trifluorm ethyl)trichlorphosphoian (C F 3) 2PC13 und Tris(trifluormethyl)dichlorphosphoran (C F 3) 3PCl2 Molecular Structures o f Phosphorus Compounds, IV Bis(trifluoromethyl)trichlorophosphorane (CF3)2PC13 and Tris(trifluoromethyl)dichlorophosphorane (CF3)3PC12 H. O b e r h a m m e r The molecular structures of the two trifluoromethyl phosphoranes (CF3)2 PC13 and (CF3)3 PC12 have been determined by electron diffraction of gases. The structure of (CF3)2 PC13 was found to be a regular trigonal bipyramid with both CF3 groups in axial positions (D3h symmetry) and the fluorine atoms staggered to the equatorial chlorine atoms. The following geometric parameters (ra-values) were obtained: r(C-F) = 1.331(2) Ä, r(P-C) = 1.950(11) Ä, r(P-Cl) = 2.036(2) A and < S FCF = 108.3°(0.4). (CF3)3 PC12 possesses the structure of a distorted trigonal bipyramid with two CF3 groups in axial and one in equatorial position. Again the fluorine atoms of the axial CF3 groups are staggered to the equatorial atoms. The revalues for the geometric parameters are: r(C-F) = 1.329(2) Ä, r(P-C)eq = 1.938(31) Ä, r(P-C)ax = 1.946(14) A, r(P-Cl) = 2.053(6) Ä, < FCF = 108.5°(0.3), < C1PC1 = 133.0°(1.7) and * CaxPCeq = 95.5°(1.9). The average P-C bond length was found to be r(P -C)av = 1.943(5) Ä. The results for the mean square amplitudes are given in the article. It was shown that in both molecules the torsional amplitudes of the CF3 groups around the P -C bond directions are small, indicating high potential barriers to internal rotation. 
  Reference    (Z. Naturforsch. 30b, 506—512 [1975]; eingegangen am 26. Februar 1975) 
  Published    1975 
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 Identifier    ZNB-1975-30b-0506 
 Volume    30 
120Author    R.S T, N. K., P.S KRequires cookie*
 Title    Studies on Ylides: Carbonyl Olefination with Diphenylmethylene- triphenylphosphorane  
 Abstract    Diphenylmethylenetriphenylphosphorane, a stable phosphonium ylide, has been prepared and reacted with a range of substituted aromatic aldehyde to afford 1,1,2-tri­ aryl-substituted ethylenes in fair to good yields. The structure of the products are based on IR and NM R spectral evidence. 
  Reference    (Z. Naturforsch. 30b, 513—515 [1975]; received February 26 1975) 
  Published    1975 
  Keywords    Ylides, Carbonyl Olefination, Phosphorane, Diphenylmethylenetriphenylphosphorane 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0513.pdf 
 Identifier    ZNB-1975-30b-0513 
 Volume    30 
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