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1982 (310)
1Author    WinfriedH. Dell, ManfredL. ZieglerRequires cookie*
 Title    Insertionen in die Molybdän-Kohlenstoff-Bindung von *? 7 -C7H7Mo(CO)2R-Spezies (R = CH3, C6H5); Darstellung und Charakterisierung von E02 (E = S, Se, Te)-und Zn-Einschiebungsprodukten Insertions into the Motybdenum-Carbon Bond of ?7 7 -C7H7Mo(CO)2R Species (R = CH3, CÖHS) ; Synthesis and Characterization of EO2 (E = S, Se, Te) Insertion Products  
 Abstract    The compounds t? 7 -C7H7Mo(CO)2R (R — CH3, CßHs) were synthesized and characterized. The SO2-insertion into the Mo-C bond of the methyl and phenyl species was accomplished by condensing dry SO2 into the ether solutions of the compounds. The SeC>2 and TeC>2 insertion was only successful with the methyl compound activating the dioxides in a metal vapour apparatus. There is strong evidence that Zn can also be inserted in the Mo-C bond of 7? 7 -C7H7MO(CO)2CH3. 
  Reference    (Z. Naturforsch. 37b, 1—6 [1982]; eingegangen am 27. August 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0001.pdf 
 Identifier    ZNB-1982-37b-0001 
 Volume    37 
2Author    Winfried Dell, ManfredL. ZieglerRequires cookie*
 Title    Darstellung und Charakterisierung von dreifach NR2-verbrückten Molybdänkomplexen des Typs ^-C7H7(CO)2Mo(AfNR2)3Mo-^-C7H7 Synthesis and Characterization of Triply NR2-Bridged Molybdenum Complexes of the Type *7 3 -C7H7(CO)2Mo0U-NR2)3MO-^-C7H7  
 Abstract    The mixed-valence compounds of composition C7H7(CO)2Mo(jm-NR2)3MoC7H7 (R = H, J0-NO2-C6H4, C4H4) can be synthesized by reacting T? 7 -C7H7Mo(CO)2Br with the correspond-ing sodium amides. The amido compound with R — H can also be obtained from 7? 7 -C7H7MO(CO)2CH3 in liquid ammonia. Reaction of the products with CH3OH yields the known complex ^^^(CO^Mo^-OCHshMo-^-^H?. 
  Reference    (Z. Naturforsch. 37b, 7—12 [1982]; eingegangen am 18. September 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0007.pdf 
 Identifier    ZNB-1982-37b-0007 
 Volume    37 
3Author    Johannes Rott, Ernst Guggolz, Albert Rettenmeier, ManfredL. ZieglerRequires cookie*
 Title    Darstellung und Charakterisierung von Spezies der Zusammensetzung ?? Synthesis, Structure, Mono-and Binuclear Chromium Complexes  
 Abstract    5 -C5H5Cr(NO)2SR (R = C6H5, C6F5, uC4H9) und [r? 5 -C5H5CrNO]2(ER)2 (E = O, S, Se, Te, R = Alkyl, Aryl); Röntgenstrukturanalysen von [^ 5 -C5H5(NO)Cr(/*-SeC6H5)2Cr(NO)-J7 5 -C5H5] und [^ 5 -C5H5(NO)Cr(iM-Se-n-C4H9)(Jw-OH)Cr(NO)-?? 5 -C5H5] Synthesis and Characterization of Species of Composition ?? 5 -C5H5Cr(NO)2SR (R = C6H5, C6F5, *-C4H9) and [r?5-C5H5CrNO]2(ER)2 (E = 0, S, Se, Te, R = alkyl, aryl); X-ray Structure Analysis of [r?5.C5H5(NO)CrCa-SeC6H5)2Cr(NO)-^.C5H5] and [^-C5H5(NO)Cr(ia-Se-n-C4H9)(ia-OH)Cr(NO)-^.C5H5] The title compounds have been synthesized and characterized by elemental analysis, IR and *H NMR methods and mass spectra. The crystal and molecular structures of the binuclear complexes [^-CsHsfNOJCr^-SeCeHsteCrfNOHS-CgHs] and [/?5-C5H5(NO)Cr(^-Se-n-C4H9)(/u-OH)Cr(NO)-?? 5 -C5H5] have been determined by X-ray structure analysis. The latter is shown to have a four-membered ring consisting of two chromium atoms, one selenium, and one oxygen atom. 
  Reference    (Z. Naturforsch. 37b, 13—23 [1982]; eingegangen am 27. August 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0013.pdf 
 Identifier    ZNB-1982-37b-0013 
 Volume    37 
4Author    Thomas Bünger, Udo EngelhardtRequires cookie*
 Title    N-Methylsubstituierte Hydrazinderivate der Phosphorsäure aus Phenoxy-phosphoryl-dichlorid und aus Phenoxy-thiophosphoryl-dichlorid N-Methyl Substituted Hydrazine Derivatives of Phosphoric Acid from Phenoxy-phosphoryl-dichloride and from Phenoxy-thiophosphoryl-dichloride  
 Abstract    C6H50P(X)C12 (X = O, S) reacts with 1,2-dimethylhydrazine, 1,1-dimethylhydrazine or methylhydrazine, resp., to give the new dihydrazido derivatives la, 2a, 2b, or 3a and 3a-l, resp. Their X H NMR and 31 P NMR data are given. Einführung 
  Reference    (Z. Naturforsch. 37b, 24—28 [1982]; eingegangen am 19. August 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0024.pdf 
 Identifier    ZNB-1982-37b-0024 
 Volume    37 
5Author    Heinrich Nöth, Robert Rurländer, Peter WolfgardtRequires cookie*
 Title    27 AI NMR Spectroscopy  
 Abstract    27 AI NMR Spectra, Aluminium Compounds 27 AI NMR studies of AICI3 solutions in diethyl ether reveal the presence of AICI4 at high concentrations. This ion can also be recognized besides AICI3 • OR2 at low temperature in düute solutions, while at 25 °C a single signal is observed, which represents the average of all species in solution. More extensive dissociation of AICI3 results in tetrahydrofuran. The main species in equilibrium with one another are A1C13-2THF, AlClJ and AlCl2(THF)£. Nearly quantitative dissociation to yield AICI4 and [AlClLs] 2+ occurs in dilute solutions of AICI3 in monoglyme (L reprents one oxygen donor atom); at higher concentration an adduct AlCVL with Al in a tetrahedral environment is also present. This trend towards extensive dissociation is also observed in the solutions of AICI3 in diglyme and triglyme. Relative peak areas are in agreement with the formation of a 1:1 electrolyte [AlCl2L4] + AlCl4 in diglyme, whereas additional dissociation into [A1C1L5] 2+ and A1C1J occurs in triglyme. 
  Reference    (Z. Naturforsch. 37b, 29—37 [1982]; received July 22 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0029.pdf 
 Identifier    ZNB-1982-37b-0029 
 Volume    37 
6Author    Gerhard Schilling, ClausW. Rabener, Wendel LehrRequires cookie*
 Title    31 P-NMR-Untersuchungen an linearen Phosphorylphosphazenen 31 P NMR Investigations oil Linear Phosphorylphosphazenes  
 Abstract    The 31 P NMR Spectra of PCI3NPCI2O (1) and the homologous compounds 2-4 do not indicate any rotational isomers in the temperature range 183-413 K. The observed values for v/2 depend on the viscosity of the solvent and on the temperature of the sample. They are reduced to T 1 relaxation effects, where the spin rotational mechanism may be dominant in the case of the small molecules and the PCI3 group. 
  Reference    (Z. Naturforsch. 37b, 38—42 [1982]; eingegangen am 19. Juni 1981) 
  Published    1982 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0038.pdf 
 Identifier    ZNB-1982-37b-0038 
 Volume    37 
7Author    Carl Habben, Walter Maringgele, Anton MeilerRequires cookie*
 Title    Reactions of Multiple Bond Systems with the l,2,4-Trithia-3.5-diborolane Ring  
  Reference    (Z. Naturforsch. 37b, 43—53 [1982]; eingegangen am 9. Juli 1981) 
  Published    1982 
  Keywords    J 4 -1, 3, 2-Dithiaborolenes, A 2 < 5 -1, 4-Thiaboracyclohexadienes, 2-Methyl-4-trimethylsilyl-l, 3, 2-dithiaborolane, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0043.pdf 
 Identifier    ZNB-1982-37b-0043 
 Volume    37 
8Author    H. Holler, W. Kurtz, D. Babel, Sonderforschungsbereich, (. Kristallstruktur, Chemische Bindung, W. KnopRequires cookie*
 Title    Die Kristall-und magnetische Struktur von BaCrF5 Crystal and Magnetic Structure of BaCrF5  
 Abstract    A single crystal X-ray structure analysis of orthorhombic BaCrFs (a — 1393.8(1), b = 571,1(1), c = 494,7(1) pm), which crystallizes in the structure type of BaGaF5, space group P2i2i2i, yielded Cr-F distances in the range of 187.3 to 194.9 pm, average 190.2 pm. Using powder neutron diffraction data taken at 2.2 K a G-type antiferromagnetic structure with spin alignment along the c direction of the lattice was worked out. Single crystal susceptibility data were consistent with this model and in addition showed a small net moment, probably due to spin canting, to be present below the Neel temperature of TN = 3.4 K. The orientation of this moment along the b axis is in accordance with the space group symmetry as well, chemical and magnetic cell being the same. From powder susceptibility data an exchange energy of —3.74 K (g = 2.02) was obtained by fitting Fisher's model. The low bridging angle of Cr-F-Cr = 137.4° within the eis corner-sharing chain of octahedra is made responsible for the weak antiferromagnetism in BaCrFs, which is compared to that of other chromium(III) fluorides. 
  Reference    (Z. Naturforsch. 37b, 54—60 [1982]; eingegangen am 21. August 1981) 
  Published    1982 
  Keywords    Pentafluorochromate(HI), Crystal Structure, Magnetic Structure, Magnetic Susceptibility 
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 Identifier    ZNB-1982-37b-0054 
 Volume    37 
9Author    Hartmut MaischRequires cookie*
 Title    Die Stabilisierung von P(NH2)Hal2 (Hai = Cl, Br, I) und P(NHMe)2G als Komplexliganden  
 Abstract    The Stabilisation of P(NH2)Hal2 (Hal = Cl, Br, I) and P(NHMe)2Cl as Complex Ligands The phosphanes P(NH2)Hal2 and P(NHMe)2Cl are stabilised as ligands in (CO)5MoP(NH2)Hal2 [Hai = Cl (2), Br (3), I (4)] and (CO)5MoP(NHMe)2Cl (10) by reactions of (CO)5MoP(NH2)3 (1) with HHal or of (CO)5MoP(NHMe)3 (8) with HCl, respectively. 4 decomposes at room temperature and reacts with i-BuNH2 to give, (CO)5MOP(NH-<-BU)2NH2 (6). 1 and HI form (CO)5MoPI3. 3 can also be prepared from 2 with HBr, 4 from 2 and 3 with HBr and HI, respectively. The reactions of 2-4 with NR3 produce polymers, whereas the reaction of 3 with pyridine leads to (COjsMoNCsHs. The mixtures (CO)5MoP(NHMe)Br2/(CO)5MoPBr3 and (CO)5MoP(NH-t-Pr)2Cl/ (CO)5MoP(NH-i-Pr)Cl2 are isolated from reactions of 8 with HBr and of 9 with HI, and 9 reacts with HBr to give (CO)sMoPBr3. (CO)sMoP(NHMe)I2 is formed in small amounts by the reaction of 8 with HI, the main product is an insoluble solid, which is probably the impure intermediate [(CO)5MoP(NHMe)(NH2Me)2] 2 +2I-. Reaction of 10 with NEt3 leads to the formation of the dinuclear complex 12 in which the new diazadiphosphetidine [MeNHP-NMe]2 functions as a bridging ligand between two (CO)sMo units. 
  Reference    (Z. Naturforsch. 37b, 61—67 [1982]; eingegangen am 1. Oktober 1981) 
  Published    1982 
  Keywords    Ligand Reactions, Hydrogen Halides, Phosphanes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0061.pdf 
 Identifier    ZNB-1982-37b-0061 
 Volume    37 
10Author    Lothar Weber, Dietmar WewersRequires cookie*
 Title    ÜbergangsmetaU-Schwefelylid-Komplexe, XII [1] ?7 5 -Thiacyclohexadienyl-l-oxid als Ligand in neutralen Halogenomolybdän-und Halogenowolframkomplexen Transition Metal Sulfur Ylide Complexes, XII [1] ?y 5 -Thiacyclohexadienyl-l-oxide as a Ligand in Neutral Halide Complexes of Molybdenum and Tungsten  
 Abstract    The organometallic anion in tetraethylammonium-tricarbonyl(3,5-diphenylthiacyclo-hexadienyl-1-oxide)molybdate and its tungsten analogue can be halogenated by treatment with iodine, C5H5N • Br2, and I,I-dichloroiodobenzene to yield neutral [7?5.C5H3(C6H5)2SO]M(CO)3X complexes (M = Mo, W; X = Cl, Br, I). Weitere neutrale Komplexe des r/ 5 -Thiacyclohexa-dienyl-l-oxid-Liganden sollten durch Halogenie-rungsreaktionen an 2, 3 und 4 zugänglich sein. Die Ligandenstärke des Heterocyclus sowie die Nucleo-philie von 2, 3 und 4 werden verglichen mit bekann-ten ?7 5 -Liganden wie (T^-CSHS)-und deren Tri-carbonylmetallat-Ionen [(jf-C5H5)M(CO)3]-(M = Cr, Mo, W). Präparative Ergebnisse Die Iodierung von 3 und 4 in Form ihrer Tetra-ethylammoniumsalze gelingt in CH2C12-Lösung durch Umsetzung mit äquivalenten Mengen Iod bei 0 °C (Gl. (2)). Der Verlauf der Reaktion ist IR-spektroskopisch im v(CO)-Bereich leicht zu ver-folgen. Ähnliches gilt für die Bromierung. Jedoch wird hier die Verwendung des bequem ab wägbaren festen Pyridin-Bromaddukts CsHsN-B^ der des freien Halogens vorgezogen (Gl. (3)). Bei der Um-setzung von äquivalenten Mengen an I.I-Dichlor-iodbenzol und 3 bzw. 4 in CH2CI2 werden die entsprechenden Chlorokomplexe erhalten (Gl. (4)). Die Halogenierung des Chromderivates 2 gelang unter analogen Bedingungen nicht. Die so erhaltenen Produkte sind die ersten neutra-len Molybdän-und Wolframkomplexe, die den rf>-Thiacyclohexadienyl-l-oxid-Liganden tragen. Sie stellen ockergelbe bis orangegelbe diamagnetische Feststoffe dar, die kurzzeitig unzersetzt an der Luft gehandhabt werden können. Sie lösen sich gut in CH2CI2 und CHCI3, weniger gut in Aceton, THF, Toluol und Ether und sind in gesättigten Kohlen-wasserstoffen unlöslich. Die Lösungen erleiden bei 
  Reference    (Z. Naturforsch. 37b, 68—72 [1982]; eingegangen am 10. September 1981) 
  Published    1982 
  Keywords    3, 5-Diphenylcyclohexadienyl-l-oxide, Halogenation, Molybdenum and Tungsten Complexes 
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 Identifier    ZNB-1982-37b-0068 
 Volume    37 
11Author    Jochen Eilermann, Martin LietzRequires cookie*
 Title    Chemie polyfunktioneller Liganden, 67 [1]  
 Abstract    Die Darstellung von l.l.l-Tris(dichlorarsinomethyl)ethan, Ethan-l.l.l-tris(methylarsonsäure), 1.1.1-Tris (arsinomethyl)ethan und einem neuen Organocyclotriarsan Chemistry of Polyfunctional Ligands, 67 [1] The Preparation of l.l.l-Tris(dichloroarsinomethyl)ethane, Ethane-l.l.l-tris(methylarsonic acid), l.l.l-Tris(arsinomethyl)ethane and of a New Organocyclotriarsane l,l,l-Tris(dichlorarsinomethyl)ethane, CH3C(CH2AsCl2)3 (5) can be obtained in the reaction of CH3C(CH2AsNC6H4CH3)3 (4) with gaseous HCl. The heteroadamantane CH3C(CH2AsO)3 (6) reacts with AsCl3 or PC13 yielding also 5. CH3C(CH2AsO)3, CH3C(CH2AsS)3 and CH3C(CH2AsI 2)3 are oxidized with H202 to give CH3C[CH2As(0)(0H)2]3 (7) and CH3C[CH2As(0)(0H)2]3 • H20 (7 a). CH3C(CH2AsI2)3 and C(CH2AsI2)4 can be reduced with LiAlH4 to give CH3C(CH2AsH2)3 (9) and C(CH2AsH2)4 (12). Oxidation of 9 and 12 leads to the cyclotriarsane compounds CH3C(CH2As)3 (10) and H2AsCH2C(CH2As)3 (13). 
  Reference    (Z. Naturforsch. 37b, 73—80 [1982]; eingegangen am 29. Juni/21. September 1981) 
  Published    1982 
  Keywords    Arsenic Compounds, Organocyclotriarsane, Vibrational Spectra, *H NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0073.pdf 
 Identifier    ZNB-1982-37b-0073 
 Volume    37 
12Author    V. Zürn, W. Schwarz, W. Rozdzinski, A. SchmidtRequires cookie*
 Title    Di-and Trimeric Dimethylaminoisocyanate. Structures and Spectra  
 Abstract    N-Heterocyclic Compounds N,N-Dimethyl-N',N'-bis(trimethylsilyl)hydrazine reacts with fluorophosgene to yield 5,5-dimethyl-3-dimethylamino-2,4-dioxo-5-azonia-imidazolidide (1). With phosgene, l-methyl-2-chloroformyl-4-dimethylamino-l,2,4-triazolidine-3,5-dione (5) can be prepared. The thermal decomposition of N,N-dimethyl-N'-carbomethoxi-N'-trimethylsüyl-hydra-zine gives l,3,5-tris(dimethylamino)-l,3,5-hexahydrotriazine-2,4,6-trione (2) and 1,2-dimethyl-4-dimethylamino-l,2,4-triazolidine-3,5-dione (3). 2 can also be prepared by thermal decomposition of N.N-dimethyl-N'-carbomethoxi-N'-fluoroformylhydrazine (4). The crystal and molecular structures of 1 and 2 were determined by X-ray analysis. The iH NMR and vibrational data of 1-5 were communicated. The mass spectra of 1-3 were measured and discussed. 
  Reference    (Z. Naturforsch. 37b, 81—90 [1982]; eingegangen am 24. Juli 1981) 
  Published    1982 
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 Identifier    ZNB-1982-37b-0081 
 Volume    37 
13Author    Gerd Becker, Michael RößlerRequires cookie*
 Title    Trimethylsilylverbindungen der Vb  
 Abstract    Elemente, HI [1] Tris(trimethylsilyl)-und Tris(trimethylstannyl)bismutan sowie Tetrakis(trimethylsilyl)dibismutan Trimethylsilyl Derivatives of Vb-Elements, III [1] Tris(trimethylsilyl)-and Tris(trimethylstannyl)bismuthine as well as Tetrakis(trimethylsilyl)dibismuthine Tris (trimethylsilyl) bismuthine, Tris(trimethylstanny 1)bismuthine, Lithium Bis(trimethylsilyl)bismuthide * 2 THF, Tetrakis(trimethylsilyl)dibismuthine Chlorotrimethylsilane and sodium/potassium bismuthide, easily prepared from finely powdered bismuth and sodium potassium alloy in 1,2-dimethoxyethane (DME), react to give tris(trimethylsilyl)bismuthine (1) in 48% yield. When compound 1 is treated with chlorotrimethylstannane all trimethylsilyl substituents are successively replaced by stannyl groups, and tris(trimethylstannyl)bismuthine (4) is obtained. As in analogous reactions of other tris(trimethylsilyl) derivatives of Vb-elements with methyl lithium in diethylether/tetrahydrofuran (THF), one trimethylsilyl group of tris (trimethylsilyl)-bismuthine (1) can also be removed, and lithium bis(trimethylsilyl)bismuthide • 2 THF (5) is formed. With 1,2-dibromoethane bismuthide 6 reacts with metal halogen exchange to give green lustrous needles of tetrakis(trimethylsilyl)dibismuthine (6). In contrast to other dibismuthines described in the literature, this compound is thermally rather stable and can be isolated in preparative amounts. Similar to several distibines a colour change from green to red, resp. orange-red occurs on melting or dissolving dibismuthine 6 in organic solvents. 
  Reference    (Z. Naturforsch. 37b, 91—96 [1982]; eingegangen am 7. August 1981) 
  Published    1982 
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 Identifier    ZNB-1982-37b-0091 
 Volume    37 
14Author    Elli Theodoridou, Pantelis Karabinas, Dimitrios JannakoudakisRequires cookie*
 Title    Elektrochemisches Verhalten der Nitrophenole und ihrer Reduktionsprodukte an Graphitelektroden, II Mechanismus und Kinetik Electrochemical Behavior of the Nitrophenols and their Reduction Products at Graphite Electrodes, II Mechanism and Kinetic  
 Abstract    The mechanism of the electrochemical reactions of l-nitro-2-naphthol, o-nitrophenol and p-nitrophenol at carbon fibre electrodes is investigated in aqueous solutions with pH= 1-10. The above nitrophenols are reduced to the corresponding amines, which are reoxidized to quinone imines. As the quinone imines are partially hydrolysed to quinones, the kinetic of this hydrolysis reaction is also examined. In the case of l-nitro-2-naphthol the hydrolysis rate constant of 1,2-naphthoquinone imine is estimated as a function of pH by cyclic voltammetry. 
  Reference    (Z. Naturforsch. 37b, 97—101 [1982]; eingegangen am 14. September 1981) 
  Published    1982 
  Keywords    Cyclic Voltammetry, Graphite Electrodes, o-Nitrophenol, 1, 2-Naphthoquinoneimine 
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 Identifier    ZNB-1982-37b-0097 
 Volume    37 
15Author    Jiří Kohout, Jerzy Mroziński, Mária HvastijováRequires cookie*
 Title    Cy anato -Kupfer (II) -Komplexe mit organischen Liganden, XX [1] ESR-und magnetische Untersuchung des Dicyanato-bis(pyridin)kupfer(II)-Komplexes Cyanato-Copper(II) Complexes with Organic Ligands, XX [1] ESR and Magnetic Study of Dicyanato-bis(pyridine)copper(II)  
 Abstract    The ESR spectra and the temperature dependence of the magnetic susceptibility of Cu(NCO)2(pyridine)2 were measured. The ESR spectrum at room temperature shows a single reversed line; at —130 °C it is isotropic. The susceptibility down to 4.2 K obeys the Curie-Weiss law with a small 6 value. These results are interpreted on the basis of the known crystal and molecular structure. 
  Reference    (Z. Naturforsch. 37b, 102—104 [1982]; eingegangen am 28. September 1981) 
  Published    1982 
  Keywords    ESR Spectra, Magnetic Susceptibility, Exchange Coupling, Magnetic Interaction, Orbital Mixing 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0102.pdf 
 Identifier    ZNB-1982-37b-0102 
 Volume    37 
16Author    Erich Ziegler, OttoS. Wolfbeis, Iris Trummer, Frau Prof, Dr, MagHelga Et, WittmannRequires cookie*
 Title    Eine Methode zur C-Methylierung cyclischer /3-Dicarbonyl-Verbindungen A Method for the C-Methylation of Cychc /9-Dicarbonyl Compounds  
 Abstract    Cyclic /5-dicarbonyl compounds (1, 4, 7, 10) were reacted with either aniline or urea in the presence of trimethoxymethane to give the enamines 2, 5, 8 and 11, resp. The latter were reduced with hydrogen over palladium-charcoal or with the dimethylamine-boron-hydride complex to give the C-methylated /3-dicarbonyl compounds 3, 6, 9 and 12, resp. in moderatly to good overall yields. 
  Reference    (Z. Naturforsch. 37b, 105—107 [1982]; eingegangen am 20. Juli 1981) 
  Published    1982 
  Keywords    Enamine Reduction, Catalytic Hydrogenation, Boron Hydride Reduction, C-Methylation 
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 Identifier    ZNB-1982-37b-0105 
 Volume    37 
17Author    K. B. Plötz, Hk Müller-BuschbaumRequires cookie*
 Title    Oxoplumbate(II), IV Einbau von Sr 2+ in Pb9Al8021 Solid State Chemistry of Oxoplumbates(II), IV Incorporation of Sr 2+ in Pb9Al802i  
  Reference    (Z. Naturforsch. 37b, 108—109 [1982]; eingegangen am 29. September 1981) 
  Published    1982 
  Keywords    Crystal Structure, Lead, Aluminium, Strontium 
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 Identifier    ZNB-1982-37b-0108_n 
 Volume    37 
18Author    Komplex, Joachim PickardtRequires cookie*
 Title    Na2[Cu2(N3)6(C6H12N4)2] * 3 H20, einem pentakoordinierten Kupfer(II)  
 Abstract    The Crystal Structure of Sodium Di-//-azido-tetraazidobis(hexamethylene-tetramine)dicuprate(II)-tri hydrate, Na2[Cu2(N3)6(C6H12N4)2] • 3 H20, Cupric Complexes, Pentacoordinated Complexes, Di -n -azido -tetraazido -bis (hexamethy lene -tetramine)dicuprate(II), X-ray 
  Reference    (Z. Naturforsch. 37b, 110—111 [1982]; eingegangen am 2. September 1981) 
  Published    1982 
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 Identifier    ZNB-1982-37b-0110_n 
 Volume    37 
19Author    Elli Theodoridou, Pantelis Karabinas, Dimitrios JannakoudakisRequires cookie*
 Title    elektrochemische Reduktion von l-Nitro-2-naphthol an Kohlenstoff-Faser-Elektroden Influence of the Adsorption on the Electrochemical Reduction of 1-Nitro-2-naphthol at Carbon Fibre Electrodes  
 Abstract    In the electrochemical reduction of 1-nitro-2-naphthol at carbon fibre electrodes an adsorp-tion peak cathodic of the diffusion-controlled peak is obtained, as it happens in processes involving a strong adsorption of the reactant. This adsorption peak appears when the elec-trodes remain at positive potentials (+ 1 V) in acidic solutions of the nitronaphthol and its interpretation is corroborated by its scan rate and concentration dependence. Im Rahmen einer früheren Arbeit [1], über den Mechanismus der elektrochemischen Reduktion von 
  Reference    (Z. Naturforsch. 37b, 112—114 [1982]; eingegangen am 14. September 1981) 
  Published    1982 
  Keywords    Cyclic Yoltammetry, Carbon Fibre Electrodes, Adsorption Effects, l-Nitro-2-naphthol 
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 Identifier    ZNB-1982-37b-0112_n 
 Volume    37 
20Author    Karl-Hans OnganiaRequires cookie*
 Title    Stereoselektive 1.4-Ringöffnung von l-Aryl-4-methylthio-2-azetidinonen Stereoselective 1,4-Ringopening of l-Aryl-4-methylthio-2-azetidinones  
 Abstract    Lithiumiodide/Pyridine, 3-Methylthio-/S-lactames, Stereoselectivity The 4-methylthio-2-azetidinones la-d react with lithiumiodide/pyridine by stereoselective 1,4-ringopening to the E/Z 3-methylthioprope-noicacid anilides 2b-e. The attempted selective O-alkyl cleavage la ->le failed. 
  Reference    (Z. Naturforsch. 37b, 115—116 [1982]; eingegangen am 10. September 1981) 
  Published    1982 
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 Identifier    ZNB-1982-37b-0115_n 
 Volume    37 
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