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'UV spectra' in keywords Facet   section ZfN Section B  [X]
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1985 (1)
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1Author    H., P. F.Requires cookie*
 Title    Polarographische Untersuchungen an Metallkomplexen des Formylferrocenthiosemicarbazons Polarographie Investigations on Metal Complexes of Formylferrocenethiosemicarbazone  
 Abstract    The complexes ML2 (M = Co(II), Ni(II), Cu(II), Zn(II) and Cd(II), LH — formylferro-cenethiosemicarbazone) and Cu2L2 are described. Their IR-and UV-spectra and their polarographic behaviour are reported. 
  Reference    (Z. Naturforsch. 28b, 383—388 [1973]; eingegangen am S. April 1973) 
  Published    1973 
  Keywords    Formylferrocenethiosemicarbazone, metal complexes, IR-spectra, UV-spectra, polaro-graphic behaviour 
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 TEI-XML for    default:Reihe_B/28/ZNB-1973-28b-0383.pdf 
 Identifier    ZNB-1973-28b-0383 
 Volume    28 
2Author    F. H., W. P.Requires cookie*
 Title    Hexa(isocyanato)disilane  
 Abstract    The new compound hexa(isothiocyanato)-disilane, Si2(NCO)6, is prepared by reaction of Si2Br6 and AgNCO in toluene, and is charac­ terized by mass, vibrational as well as UV spectra. 
  Reference    (Z. Naturforsch. 30b, 282—283 [1975]; eingegangen am 2. Januar 1975) 
  Published    1975 
  Keywords    Hexa(isocyanato)disilane, Vibrational Spectra, Mass Spectra, UV Spectra 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0282_n.pdf 
 Identifier    ZNB-1975-30b-0282_n 
 Volume    30 
3Author    OskarE. Polansky, LewisRequires cookie*
 Title    Zur Kenntnis organischer Lewissäuren, 31 Die Lewissäureeigenschaft einiger Barbitursäurederivate * On Organic Lewis Acids, 31 Lewis Acid Properties of Some B arbiturates  
 Abstract    Arylidenbarbituric acids (4) and arylidendimethylbarbituric acids (5) are compounds w ith a polarized C = C-double bond, and hence are electrically neutral lewis acids. There­ fore they are able to add bases. The measured UV spectra show a characteristic dependence on the pH value. pK values are reported. 
  Reference    (Z. Naturforsch. 30b, 582—586 [1975]; eingegangen am 11. März 1975) 
  Published    1975 
  Keywords    Acid, Arylidenbarbituric Acid, Arylidendimethylbarbituric Acid, UV Spectra, pK Values 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0582.pdf 
 Identifier    ZNB-1975-30b-0582 
 Volume    30 
4Author    Requires cookie*
 Title    Darstellung und Eigenschaften von Diacetylbis(methylimin)  
 Abstract    Synthesis and Properties of Biacetylbis(methylimine) H e i n d i r k to m D i e c k * , K l a u s -D i e t e r F r a n z * u n d W e r n e r M a j u n k e Biacetylbis(methylimine) (1) is obtained by formic acid catalyzed condensation of biacetyl and methylamine. Photoelectron-and UV spectra, H NMR and 13C NMR data are compared with those of the new compound biacetylbis(isopropylimine) (2) and glyoxalbis(isopropylimine) (3). 
  Reference    (Z. Naturforsch. 30b, 922—925 [1975]; eingegangen am 7. Mai 1975) 
  Published    1975 
  Keywords    Diimines, PE Spectra, Photoelectron Spectra, UV Spectra, 13C NMR 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0922.pdf 
 Identifier    ZNB-1975-30b-0922 
 Volume    30 
5Author    Emmanuel Chukwuemeka OkaforRequires cookie*
 Title    The Metal Chelates of Heterocyclic /3-Diketones and their Derivatives, Part IV New Mixed Ligand Tetrakis Complexes of Lanthanides Derived from tris-Acetylacetonates and Some 4-Acyl Pyrazolones  
 Abstract    Some new mixed ligand tetrakis chelates derived from tris acetylacetonates of La, Ce, Pr, Nd, and Gd -with other /?-diketones, like l-phenyl-3-methyl-4-benzoyl-pyrazolone-5 and l-phenyl-3-methyl-4-acetyl-pyrazolone-5 have been synthesised. The compounds are characterised by elemental analyses and IR data. The UV spectral properties and the conductance in DMF have also been reported. 
  Reference    Z. Naturforsch. 35b, 715—718 (1980); received January 2 1980 
  Published    1980 
  Keywords    Lanthanon Mixed Ligand Tetrakis Chelates, Synthesis, UV Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0715.pdf 
 Identifier    ZNB-1980-35b-0715 
 Volume    35 
6Author    S. P. Perlepes, ThF. Zafiropoulos, J. K. Kouinis, A. G. GalinosRequires cookie*
 Title    Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part HI [1] Spectral Studies of the Hglä Ion  
 Abstract    A study has been made of the Far-IR spectra (250-30 cm -1) of the complexes HHgl3 • 2 Py and HHgl3 • 2 An (Py = pyridine and An = aniline), in the solid state. Associated anionic structures are present in the two complexes. The UV spectrum of the aniline complex, in three solvents, shows that the Hgl3~ ion is the predominant anionic species in solution. 
  Reference    Z. Naturforsch. 35b, 1244—1246 (1980); received April 24 1980 
  Published    1980 
  Keywords    Mercury, Tri-iodomercurate(II), UV Spectra, Far-IR Spectra 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1244.pdf 
 Identifier    ZNB-1980-35b-1244 
 Volume    35 
7Author    G. Peters, W. PreetzRequires cookie*
 Title    Darstellung und Charakterisierung von Tetrabutylammonium-Tetraiodooxotechnetat(V), (TBA) [TcOI4] Preparation and Characterization of Tetrabutylammonium Tetraiodooxotechnetate(V), (TBA)[TcOI4]  
 Abstract    Pure (TBA)[TcOIi] is prepared from (TBA)[TcOCl4] by ligand exchange reaction with Nal in acetone. The vibrational spectra indicate C4v symmetry for the complex ion. On excitation with the 514.5 nm line of an Ar-laser a resonance Raman spectrum is obtained showing v(TcO) = 996 cm -1 and four of its overtones, symmetrically surrounded by groups of bands arising as well from the sums as from the differences of frequencies with the other fundamentals. In contrast to the ligand exchange reaction the reduction of Tc04 _ with conc. HI yields products always contaminated with polyiodides. The extremely strong Raman scatterer (TBA)l3 is detected by a characteristic doublet at 111 and 116 cm -1 and even small amounts of it cover the Raman spectrum of (TBA)[TcOI4]. 
  Reference    Z. Naturforsch. 36b, 138—140 (1981); eingegangen am 17. November 1980 
  Published    1981 
  Keywords    Tetraiodooxotechnetate(V), Resonance Raman Spectra, IR Spectra, UV Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0138.pdf 
 Identifier    ZNB-1981-36b-0138 
 Volume    36 
8Author    Rudolf Allmann, Eberhard Hohaus, Stanislaw 01ejnikRequires cookie*
 Title    Boron Chelates and Boron-Metal Chelates, X [1] 3-(2-Hydroxyphenyl)-2,2-diphenyl-l-oxa-3-azonia-2-borata-naphthalene- methanol (1/1): Synthesis, Spectroscopic Investigations and Crystal Structure  
 Abstract    2-Aminophenol, salicylaldehyde and diphenylboric anhydride react in methanol to form a fluorescent, chelate-like azomethineboron compound containing methanol. The title compound, C25H20BNO2 • CH3OH, was examined by UV, IR, HI, and NMR spectroscopy as well as by thermogravimetry and X-ray structure analysis (Pbnb, a= 8.815, b= 17.309, c = 28.992 Ä, R = 5.5%). These investigations show the six-membered chelate ring (chelate A) to exist as formulated in [2] and not as a five-membered chelate ring B. One methanol molecule connects two chelate molecules by hydrogen bonds, resulting in an overall ratio of chelate to methanol of 1 : 1. 
  Reference    Z. Naturforsch. 37b, 1450—1455 (1982); received May 1 O/June 11 1982 
  Published    1982 
  Keywords    Boron Chelate, Azomethine, Crystal Structure, UV Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1450.pdf 
 Identifier    ZNB-1982-37b-1450 
 Volume    37 
9Author    Gerhard Maas, Berndt SingerRequires cookie*
 Title    Dikationether  
 Abstract    , 6 [1] Spektroskopische Vergleiche von 9,9'-Oxy-bis(acridinium)-und 9,9'-Thio-bis(acridinium)-Salzen mit anderen 9-substituierten Acridinium-Ionen Dication Ethers, 6 [1] Spectroscopic Comparisons of 9,9'-Oxy-bis(acridinium)-and 9,9'-Thio-bis(acridinium) Salts with Other 9-Substituted Acridinium Ions 
  Reference    (Z. Naturforsch. 40b, 90—99 [1985]; eingegangen am 18. Juli 1984) 
  Published    1985 
  Keywords    Bis(acridinium) Ethers, 9-Substituted Acridinium Ions, 13 C NMR Spectra, UV Spectra, 'H NMR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0090.pdf 
 Identifier    ZNB-1985-40b-0090 
 Volume    40 
10Author    Jürgen Schallenberg, Eckart MeyerRequires cookie*
 Title    Simple Syntheses of 3-Substituted Indoles and their Application for High Yield 14 C-Labelling  
 Abstract    Methods are described which allow the synthesis of several plant indole alkaloids and their metabolites at different scales. Compounds synthesized include gramine (1) (3-di-methylaminomethylindole) which is directly derived from indole, while its biosynthetic precursors 3-aminomethylindole (3) and 3-methylaminomethylindole (2) as well as indole-3-carboxylic acid (7) are synthesized via indole-3-aldehyde (6). Slight changes of the experimental conditions allow syntheses with high yields not only at the molar but also at the /imolar level. This is extremely useful when isotope labelled compounds of high specific radioactivity are required for studies of plant metabolism. 
  Reference    (Z. Naturforsch. 38b, 108—112 [1983]; received July 22 1982) 
  Published    1983 
  Keywords    3-Substituted Indoles, Indole Alkaloids, UV Spectra, MS Spectra, 1 H NMR spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0108.pdf 
 Identifier    ZNB-1983-38b-0108 
 Volume    38 
11Author    Jochen Ellermann, AlfonsA M DemuthRequires cookie*
 Title    Chemistry of Poly functional Molecules, 75 [1] The Reaction of 5-Bromo-uracil with Sodium Diphenylphosphide  
 Abstract    5-Bromo-uracil (1) reacts with sodium diphenylphosphide or a mixture of sodium diphenylphosphide and sodium amide in liquid ammonia to give sodium 5-bromo-uracilate (5 a). From water 5 a crystallizes with one mole H2O yielding 5b. Treatment of 5 a with D2O yields sodium 5-bromo-N-deutero-uracilate-D20 (1/1) (5 c). With chlorodiphenyl-phosphine 5a forms 1-diphenylphosphino-uracil (2). 5a, b, c show N(l)-N(3)-(H/D)-tauto-merism in concentrated D2O solutions already, but in DMSO or Dö-DMSO only in dilute solutions. All the compounds were characterized by infrared, Raman, X H NMR, UV spectra and conductometry. 
  Reference    Z. Naturforsch. 38b, 1568—1574 (1983); eingegangen am 6. Juni/2. August 1983 
  Published    1983 
  Keywords    Sodium 5-Bromo-uracilates, Deutero Derivatives, Tautomerism, NMR Spectra, UV Spectra, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1568.pdf 
 Identifier    ZNB-1983-38b-1568 
 Volume    38