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1979 (382)
1Author    Manfred Zabel, Klaus-Jürgen RangeRequires cookie*
 Title    Ternäre Phasen im System Eisen-Thallium-Schwefel Ternary Phases in the System Iron Thallium-Sulfur  
 Abstract    The Compound TlFeS2 was synthesized from TIS/Fe/S-mixtures. Crystals are mono-clinic (space group C2/m) with a = 1164.4(6) pm, b = 530.8(3) pm, c = 1050.9(5) pm, ß = 144.58° and Z = 4. The structure comprises [FeS2 -]oo-chains parallel b, built from edge-shared FeS-i-tetrahedra. Relations between TlFeS2 and orthorhombic CsFeS2 are discussed. Tetragonal or monoclinic distorted tetragonal ternary phases occur with composition FeaTV^ (2.6 <x <3.6). 
  Reference    (Z. Naturforsch. 34b, 1—6 [1979]; eingegangen am 23. August 1978) 
  Published    1979 
  Keywords    System Iron-Thallium-Sulfur, Ternary Compounds, Crystal Structure, Phase Transitions 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0001.pdf 
 Identifier    ZNB-1979-34b-0001 
 Volume    34 
2Author    Wolfgang Liebelt, Kurt DehnickeRequires cookie*
 Title    Bis(tetrachloromolybdän)diazen, [MONC14] 2 Bis (tetrachloromolybdenum )diazene, [MoNCl^  
 Abstract    Bis(tetrachloromolybdenum)diazene, [MoNCL^, is prepared by the reaction of molyb-denum pentachloride with iodine azide as well as by the reaction of molybdenum penta-chloride with nitrogen trichloride. The IR spectrum, the mass spectrum and the magnetic moment (fiett — 1.63 B.M.) are in agreement with a N-N-bonded dimeric structure and Mo = N-triple bonds. 
  Reference    (Z. Naturforsch. 34b, 7 [1979]; eingegangen am 25. September 1978) 
  Published    1979 
  Keywords    Bis(tetrachloromolybdenum)diazene, Preparation, IR, Magnetic Moment, Mass Spectrum 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0007.pdf 
 Identifier    ZNB-1979-34b-0007 
 Volume    34 
3Author    Martin JansenRequires cookie*
 Title    Über eine neue Modifikation von As205 [1] On a New Modification of AS2O5 [1]  
 Abstract    Phase Transition, Crystal Structure, Lattice Constants High temperature Guinier photographs of AS2O5 indicate a continuous phase transition to HT-As205, which is accomplished at 305 + 3 °C. The crystal structure of HT-AS2O5 has been derived from the low temperature form; space group and lattice constants are P4i2i2-D| and a = 857.2 pm, c = 463.6pm (310 °C), respectively. According to sym-metry considerations, the phase transition is expected to be of pure ferroelastic-para-elastic type (422F 222). 
  Reference    (Z. Naturforsch. 34b, 10—13 [1979]; eingegangen am 2. Oktober 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0010.pdf 
 Identifier    ZNB-1979-34b-0010 
 Volume    34 
4Author    Albrecht MeRequires cookie*
 Title    CaAgP und CaAgAs -Zwei Verbindungen mit Fe2P-Struktur CaAgP and CaAgAs -Two Compounds with the Fe2P-Structure  
 Abstract    The compounds CaAgP and CaAgAs have been prepared and their structures have been determined. They are isotypic and crystallize in a modified Fe2P-structure (space group P62m-Dj|h) with the lattice constants: CaAgP ' a = 704,5(1) pm, c = 417,4(1) pm, CaAgAs a = 720,4(1) pm, c = 427,0(1) pm. 
  Reference    (Z. Naturforsch. 34b, 14—17 [1979]; eingegangen am 28. September 1978) 
  Published    1979 
  Keywords    Ternary Phosphide, Ternary Arsenide, Calcium, Silver, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0014.pdf 
 Identifier    ZNB-1979-34b-0014 
 Volume    34 
5Author    Hans-Jörg Widler, Johann WeidleinRequires cookie*
 Title    Methylmetallbromo-und -iodokomplexe des Galliums und Indiums Methyl Metal Bromo and Iodo Complexes of Gallium and Indium  
 Abstract    The interaction of (CH3)3M"i or (CH3)2Mi"Hal with (CH3)3M v Hal2 and (CH3)4M v Hal, respectively, yields methylhalogeno metalates of the general composition [(CH3)4MV]+[(CH3)4-xM II iHala;]-. (With M^ = As, Sb; M"i = Ga, In; Hal -Br, I and x— 1-3.) The vibrational spectra of these ionic compounds are reported and discussed. 
  Reference    (Z. Naturforsch. 34b, 18—22 [1979]; eingegangen am 20. September 1978) 
  Published    1979 
  Keywords    Methyl Halogeno Metalates, Preparation, Vibrational Spectra, Gallium, Indium 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0018.pdf 
 Identifier    ZNB-1979-34b-0018 
 Volume    34 
6Author    Hubert Schmidbaur, ArefA M AlyRequires cookie*
 Title    ferf-Butylphosphin-Komplexe von Gold(I)-und Silber(I)-halogeniden te?^-Butylphosphine Complexes of Gold(I) and Silver(I) Halides  
 Abstract    From HAuCLi and tri-<er£-butyl phosphine in methanol the gold(I) complex [(CH3)3C]3P-Au-C1 (1) has been synthesized and converted into the bromide 2 and iodide 3, using KBr and KI, respectively, in acetone solvent. The corresponding P-Cl functional complexes [(CH3)3C]2PCl-AuCl (4) and (CH3)3CPC12 -AuCl (5) could be obtained from (carbonyl)gold chloride ClAu(CO) and the chlorophosphine in benzene, with evolution of CO. The di-£e^-butyl-phosphine analog, [(CH3)3C]2PH -AuCl (7) results from a low-temperature reduction of HA11CI4 with this phosphine. All these gold(I) complexes are soluble in many solvents as monomers. The corresponding silver compounds, prepared from [(CH3)3C]3P and AgCl, Br, I in an inert solvent, appear to be oligomers, however, and showed dimer or tetramer association in halocarbon or benzene solvent. Infrared and 1 H, 13 C, 31 P NMR spectra have been used for further characterization of the compounds. 
  Reference    (Z. Naturforsch. 34b, 23—26 [1979]; eingegangen am 12. Oktober 1978) 
  Published    1979 
  Keywords    Gold Complexes, Silver Complexes, Phosphine Complexes 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0023.pdf 
 Identifier    ZNB-1979-34b-0023 
 Volume    34 
7Author    J. B. Van Den Berg, J. C. Van De GrampelRequires cookie*
 Title    Derivatives of eis-NPC12(NS0C1)2 and (NPC12)2NS0C1, Part XI [1] Preparation of Amino-phenyl Derivatives of NPC12(NS0C1)2  
 Abstract    Friedel-Crafts Substitution, Degradation of Amino Ligands Reaction of NPClNH-n-Bu(NSOCl)2 with benzene in the presence of AICI3 (molar ratio ring compound: AlCl3=l:2) yields NPClNH-w-Bu(NSOPh)2 in three isomeric forms. Using an excess of AICI3, two isomers with formula NPNH2Ph(NSOPh)2 are formed. These NH2 derivatives can also be isolated from the reaction mixture of NPClPyr(NSOPh)2 (Pyr = pyrrolidino), benzene and an excess of AICI3. 
  Reference    (Z. Naturforsch. 34b, 27—30 [1979]; received September 7/October 2 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0027.pdf 
 Identifier    ZNB-1979-34b-0027 
 Volume    34 
8Author    HansH. KarschRequires cookie*
 Title    Funktionelle Trimethylphosphinderivate, VIII [1] Phosphoniumsalze, Oxide und Sulfide von Tetraorganodiphosphinomethanen, R2PCH2P(CH3)2  
 Abstract    Tetramethyldiphosphinomethane (CH3)2PCH2(CH3)2 (la) reacts with HCl/ether to form the mono-and bisquaternary salts [(CH3)2PCH2P(H)(CH3)2]C1 (2) and [(CH3)2(H)PCH2P(H)(CH3)2]Cl2 (3), respectively. The system 1 a/HCl, incorporating 1 a/2/3, represents a useful tool for studying the appearance of XnAA'X'n-spin type systems. These compounds are also prototypes for a variety of other mono-or bis-phosphonium salts, which are formed in the reactions of the diphosphines (CH3)2PCH2PR2 (R — CH3, *-C4H9, C6H5) (la-c) with (CH3)2C0 + HC1, CH3I, *-C4H9Br, C6H5C0C1, (CH3)2PC1 and Br(CH2)nBr (n = 1, 2). Heterocycles are not obtained. The dioxide 14 and the disulfide 15 are also described. Some properties and spectroscopic data (IR, 1 H, 31 P and 13 C NMR) of 26 new compounds are reported and briefly discussed. 
  Reference    (Z. Naturforsch. 34b, 31—43 [1979]; eingegangen am 8. September 1978) 
  Published    1979 
  Keywords    Phosphonium Salts, Oxides, Sulfides, NMR 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0031.pdf 
 Identifier    ZNB-1979-34b-0031 
 Volume    34 
9Author    A. N. Patel, A. M. QureshiRequires cookie*
 Title    Solvent Extraction Study of Nickel(II) and Cobalt(II) with l-Phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP-OH)  
 Abstract    The extraction of nickel(II) from aqueous hydrochloric acid solution by I-phenyl -3-methyl-4-benzoylpyrazol-5-one (PMBP-OH) dissolved in carbon tetrachloride has been studied. The extraction of nickel(II) from the aqueous solution in the range of 1.0-5.0 M hydrogen ion concentration has been found to be much higher compared to that of cobalt(II). The extraction of nickel with PMBPOH is simple, fast and selective. The composition of the extracted species in solution as well as in solid form have been studied. The IR bands for the reagent and the metal complexes are reported. 
  Reference    (Z. Naturforsch. 34b, 44—47 [1979]; received July 24 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0044.pdf 
 Identifier    ZNB-1979-34b-0044 
 Volume    34 
10Author    Jürgen Kopf, Klaus Von Deuten, Bahman Nakhdjavan, Günter KlarRequires cookie*
 Title    Chalkogenolat-Ionen und  
 Abstract    ihre Derivate, V Kristall-und Molekülstruktur von 2.8-Dimethyldibenzo [c.g] [1.2.5.6] tetrathiacyclooktadien, einem Oxidationsprodukt von 4-Methylbenzol-1.2-dithiol [1] Chalcogenolates and their Derivatives, V Crystal and Molecular Structure of 2.8-Dimethyldibenzo[c,g][l,2,5,6]tetrathiaocin, an Oxidation Product of 4-Methylbenzene-l,2-dithiol 2,8-Dimethyldibenzo[c,g][l,2,5,6]tetrathiaocin, Cyclic Bisdisulfides, Structure Conformations of Diaryl Disulfides The structure of 2,8-dimethyldibenzo[c,g][l,2,5,6]tetrathiaocin (lb) has been deter-mined by X-ray methods and discussed in connection with the preferred conformations of diaryl disulfides. The compound has the anti-form I. The SS-distance is 205.8 pm, the mean CSS-angle 104.1°, and the CSS/SSC-dihedral angle 111.1°. 
  Reference    (Z. Naturforsch. 34b, 48—51 [1979]; eingegangen am 28. August 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0048.pdf 
 Identifier    ZNB-1979-34b-0048 
 Volume    34 
11Author    D. S. Mahadevappa, B. T. Gowda, N.M M GowdaRequires cookie*
 Title    Kinetics and Mechanism of Oxidation of Thiocyanate Ion by Sodium N-Chloro-4-methyl Benzene Sulphonamide in Alkaline Medium  
 Abstract    Thiocyanate Ion, Chloramine-T Kinetics of oxidation of potassium thiocyanate by the oxidant chloramine-T (CAT) in presence of NaOH has been studied at 30 °C. At low substrate concentrations, the approxi-mate rate law is, — d[CAT]/dt = k[CAT][KNCS]/[NaOH] 2 . At higher substrate concen-trations, the rate law simplifies to, —d[CAT]/dt = k[CAT]/[NaOH]. Ionic strength and addition of p-toluene sulphonamide have negligible influence on the rate. The rate of reaction decreases in D20 medium and the value of the inverse solvent isotope effect, kH2o/kD2o is 0.46. The reaction has been studied at different temperatures and the activation parameters have been calculated. 
  Reference    (Z. Naturforsch. 34b, 52—57 [1979]; received August 28 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0052.pdf 
 Identifier    ZNB-1979-34b-0052 
 Volume    34 
12Author    SunilKumar Das, Masood-Ul-Hasan, RobertA. Shaw, BarryC. Smith, Michael WoodsRequires cookie*
 Title    Phosphorus-Nitrogen Compounds, Part XLV [1] Friedel-Crafts Reactions of Some Aminochlorocyclotriphosphazatrienes  
 Abstract    Aminochlorocyclotriphosphazatrienes, Friedel-Crafts Phenylation, Effects of Amino Groups, NMR Chloroaminocyclotriphosphazatrienes, N3P3Cl6-nRn [R = NHMe (n = 2), NHEt (n= 1, 2), NHPr« (n = 4), NHPr* (n= 1, 4), NHBu< (n = 2, 4), NHCH2Ph (n= 1), NEt2 (n= 1, 2, 3), N(CH2Ph)2 (n = 1)] react with benzene in the presence of anhydrous alu-minium chloride to give phenylated products: phosphazenes and/or hydrocarbons. The structures of the phenylphosphazenes are assigned from their NMR spectra. Reactions of N3P3CI5R (R = NMe2, NC5H10) have been reinvestigated. The influence of the amino groups on rates and products is discussed. 
  Reference    (Z. Naturforsch. 34b, 58—63 [1979]; received July 31 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0058.pdf 
 Identifier    ZNB-1979-34b-0058 
 Volume    34 
13Author    Wolf-Hellmut Gündel, Helmut BerenboldRequires cookie*
 Title    Reaktion von Carboxamiden mit Chinolinium-Salzen bei Einwirkung von Base Reaction of Carboxamides with Quinolinium Salts under the Influence of Base  
 Abstract    Quinolinium Salts, Insertion Reaction, Acylamino-1,2-(and l,4-)Dihydroquinolines Carboxamides react under basic conditions with quaternary 3-cyanoquinolinium salts to give stable insertion products with 1,2-or 1,4-dihydroquinoline structure. Six examples are given. 
  Reference    (Z. Naturforsch. 34b, 64—66 [1979]; eingegangen am 6. September 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0064.pdf 
 Identifier    ZNB-1979-34b-0064 
 Volume    34 
14Author    Johann GasteigerRequires cookie*
 Title    Automatische Erzeugung pericyclischer Reaktionen Automatic Generation of Pericyclic Reactions  
 Abstract    A formal concept for the treatment of the bond and electron shifts in pericyclic reactions is developed. A new data structure for the representation of molecules allows the design of efficient algorithms. This resulted in a computer program for the exhaustive generation of pericyclic reactions. 
  Reference    (Z. Naturforsch. 34b, 67—75 [1979]; eingegangen am 30. Dezember 1977/14. September 1978) 
  Published    1979 
  Keywords    Pericyclic Reactions, Computer Program, Representation of Molecules, TT-Systems 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0067.pdf 
 Identifier    ZNB-1979-34b-0067 
 Volume    34 
15Author    DavidJ. Rawlinson, Maria Konieczny, George SosnovskyRequires cookie*
 Title    Reactions of f-Butyl Peresters, XVIII Peroxyester Reaction of f-Butyl N,N-Dimethylperoxyamidate  
  Reference    (Z. Naturforsch. 34b, 76—80 [1979]; received July 17 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0076.pdf 
 Identifier    ZNB-1979-34b-0076 
 Volume    34 
16Author    LeonardS. LevittRequires cookie*
 Title    The Alkyl Inductive Effect. I. Relations between cr*, q^ and q* for H and Alkyl Groups; <7j Values from the Size and Branching of R  
 Abstract    For alkyl groups it is shown that new inductive substituent constants, a\ (R), can be calculated accurately from previously obtained polar substituent constants, a*(R), from the simple relation a\ (R) = oi (Me) [I-2ct* (R)]. In similar fashion, the two reaction constants are related by qi/q* = a* (H)/ci (Me) = 10.6. Many new o\ values are presented for groups for which no previous estimate has been available. The attentuation of o\ (R) with alkyl size for n-alkyl groups is shown to be a function of the number of C atoms, nc: (TI(R) = —0.137 nc/(2nc + 1). The effect of branching of R is also discussed. 
  Reference    (Z. Naturforsch. 34b, 81—85 [1979]; received June 20 1978) 
  Published    1979 
  Keywords    Polar Substituent Constants, Inductive Substituent Constants, Polar Reaction Constants, Inductive Reaction Constants, Alkyl Inductive Effect 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0081.pdf 
 Identifier    ZNB-1979-34b-0081 
 Volume    34 
17Author    FouadM. Fouad, PatrickG. FarrellRequires cookie*
 Title    Substituent and Solvent Effects on HCN Elimination from l-Aryl-l,2,2-tricyanoethanes [1]  
 Abstract    1,2,2-Tricyanoethanes, Elimination of HCN The elimination of HCN from 9-dicyanomethyl-fluorene (2), 1,1-diphenyl-1,2,2-tricyanoethane (3), and 2-phenyl-I,l,2-tricyano-propane (4) in anhydrous methanol has been studied and shown to occur via an (E l)anion mechanism. Elimination of HCN from 2 in acidic, buffered and MeO~/MeOH solutions have also been studied. Addition of water or benzene to the reaction medium shifts the mechanism to (E 1 CB)R. Elimination of HCN from N,N-dimethyl-4-(I,I,2-tricyanoethyl) aniline (5) in anhydrous methanol occurs via an (E 1 CB)r mechanism and the kinetics indicate that addition of HCN to the product alkene occurs. Activation parameters, isotope effects and solvent effects have been examined in an effort to obtain information about the nature of the transition states of these reactions. 
  Reference    (Z. Naturforsch. 34b, 86—94 [1979]; received August 2 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0086.pdf 
 Identifier    ZNB-1979-34b-0086 
 Volume    34 
18Author    AbdelKader Fathy, El-Sayed Amer, Mohamed Afsah, MohamedAbbas Tawfik El-Zimaity, MetwallyRequires cookie*
 Title    Synthesis of Hexahydro-bisfbenzo-dipyrazolones, benzo-diazepinone] and Dithiopyrimidoquinazolinetetrone  
 Abstract    A new series of hexahydro-bis-benzodipyrazolones (2a-e) were obtained by the inter-action of 1 with hydrazines. These pyrazolones underwent coupling reaction with different diazonium salts to give 7a-g. Compound 1 when treated with acid hydrazides gave 3 a, b, and when subjected to Japp-Klingemann reaction in alkaline medium gave 6a-e. The hexahydro-bis-benzodiazepine (8), and dithiopyrimidoquinazolinetetrone (10) were obtained by the interaction of 1 with o-phenylenediamine and thiourea respectively. 
  Reference    (Z. Naturforsch. 34b, 95—98 [1979]; received June 5 1978) 
  Published    1979 
  Keywords    Pyrazolones, Diazonium Salts, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0095.pdf 
 Identifier    ZNB-1979-34b-0095 
 Volume    34 
19Author    S. K. Dubey, Satyavan Sharma, R. N. IyerRequires cookie*
 Title    A Convenient Synthesis of Naphth Mechanism of Thiophosgene Heteroeyelisation [1]  
 Abstract    [2',3' : 5,6]-and [l',2' : 5,6]-l,3-oxazino[3,2-b]benzimidazoles and Benzoxazolo[3,2-b] [l,3]quinazolone - Heteroeyelisation, 6-Oxonaphth[2',3': 5,6]-l,3-oxazino[3,2-b]benzimidazole, 6-Oxonaphth[l',2' :5,6]-l,3-oxazino[3,2-b]benzimidazole 
  Reference    (Z. Naturforsch. 34b, 99—101 [1979]; received August 21 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0099.pdf 
 Identifier    ZNB-1979-34b-0099 
 Volume    34 
20Author    Ulrich Wolf, Wolfgang Sucrow, Hans-Jürgen VetterRequires cookie*
 Title    Enhydrazine, XXV [1] Einige Derivate des l-Dimethylamino-2(lH)-ehinolinons Enehydrazines, XXV [1] Some Derivatives of l-Dimethylamino-2(l H)-quinolinone  
 Abstract    l-Dimethylamino-7,8-dihydro-2,5(lH,6H)-quinolinedione, l-Dimethylamino-2(l H)-quinolinone, 4-Oxo-4,5,6,7 -tetrahydro -1H -indole-2 -carboxylate 
  Reference    (Z. Naturforsch. 34b, 102—106 [1979]; eingegangen am 7. September 1978) 
  Published    1979 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0102.pdf 
 Identifier    ZNB-1979-34b-0102 
 Volume    34 
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