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'NMR Spectra' in keywords Facet   section ZfN Section B  [X]
Facet   Publication Year 1981  [X]
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1981[X]
1Author    Peter Dehnert, Joseph Grobe, Due Le VanRequires cookie*
 Title    Perfluormethyl-Element-Liganden, XXTV [I]* Organozinnverbindungen als Reagenzien, DI [2] Spaltungsreaktionen der Element-Element-Bindung in Verbindungen des Typs RnE-ERTO (R = CH3, CF3-E =P, AS, Se, Te * n,m = l, 2)  
 Abstract    A systematic study of the cleavage of element-element bonds in compounds of the type R"E-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n,m = 1, 2) by the group IV A element hydrides Me3M'H (M' = Si, Ge, Sn; Me — CH3) has been carried out. To evaluate the reaction pathway, for a number of compounds the attack of H2O, CH3OH, HBr and HI has been investigated. Possible reaction intermediates have been synthesized by in-dependent routes and tested under comparable conditions. 
  Reference    (Z. Naturforsch. 36b, 48—54 [1981]; eingegangen am 14. August 1980) 
  Published    1981 
  Keywords    Organoelement-Element Compounds, Perfluoromethyl Derivatives, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0048.pdf 
 Identifier    ZNB-1981-36b-0048 
 Volume    36 
2Author    W. PetzRequires cookie*
 Title    Über die Reaktion von [(C0)4FeC(0)NMe2]-[C(NMe2)3] + mit einigen Diorganylbromboranen On the Reaction of [(C0)4FeC(0)NMe2]-[C(NMe2)3 + with Some Diorganoboron Bromides  
 Abstract    The carbamoyl complex [(C0)4FeC(0)NMe2][C(NMe2)3] (1) reacts with boron halides of the type BrBR2 (R = Me, Ph, NMe2) at low temperature to give the boroxycarben com-plexes 2, which decompose at ambient temperature to the aminoboranes 3 and Fe(CO)s. The NMR and IR spectra of the new compounds 2 are reported. 
  Reference    Z. Naturforsch. 36b, 335—338 (1981); eingegangen am 12. November 1980 
  Published    1981 
  Keywords    Boroxycarben Ligands, Iron Carbonyl Complexes, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0335.pdf 
 Identifier    ZNB-1981-36b-0335 
 Volume    36 
3Author    Willy GomblerRequires cookie*
 Title    NMR-spektroskopische Untersuchungen an Chalkogenverbindungen, II [1] 12o Te-, 77 Se-, 19 F-und 13 C-chemische Verschiebungen von CF3-substituierten Selen-und Tellurverbindungen [2] NMR Spectroscopic Studies on Chalcogen Compounds, II [1] 125 Te, 77 Se, »F and * 3 C Chemical Shifts of CF3 Substituted Selenium and Tellurium Compounds [2]  
 Abstract    77 Se chemical shifts of compounds CF3SeX exhibit an extraordinary good linear correla-tion with Huggins' electronegativities of X, %x-A range of 1051 ppm is covered for yx values between 1.9 and 3.15. Effective electronegativities are derived from the <5(77 Se) values. For some compounds unexpected 77 Se chemical shifts are found. This indicates an uncommon electronic constitution at selenium. Electron excitation energies are reported for some of the compounds and their importance for the paramagnetic shielding term is discussed. The relative shieldings of the tellurium compounds are analogous to those of the corresponding selenium compounds. In contrast to 77 Se, the 19 F shieldings of CF3EX compounds (E = chalcogen) depend inversely on the electronegativity of E and X. The 13 C chemical shifts do not correlate with the xx values. NMR data of some CF3Se(IV) and CF3Te(IV) compounds are also reported for comparison. 
  Reference    Z. Naturforsch. 36b, 535—543 (1981); eingegangen am 21. Januar 1981 
  Published    1981 
  Keywords    NMR Spectra, Trifluoromethyl Group, Selenium, Tellurium 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0535.pdf 
 Identifier    ZNB-1981-36b-0535 
 Volume    36 
4Author    -), Cyclotetra, Phosphazane, Werner Zeiß, Tino Kuhn, Dieter Lux, Wolfgang Schwarz, Heinz HessRequires cookie*
 Title    (MePNMe)4 Mel und (MePNMe)4 2 Mel, ein Cyclotetra(A 3 .A 3 .A 3 .A 5 -) und ein Cyclotetra(A 3 .A 5 .A 3 .A 5 -phosphazan) (MePNMe)4 * Mel and (MePNMe)4 * 2 Mel, a Cyclotetra  
 Abstract    (2) with three P 111 and one P v , and (3) with two P In and P v atoms are prepared from 1 with methyl iodide. NMR spectra of 2 are compared with those of the recently prepared [1] 4. The crystal structure of 3 shows the molecule to have a crystallographic inversion centre. Thus cis-trans isomerisation must have taken place during the working up procedure. Alkylation has severe consequences on bond distances and bond angles of the cyclotetraphosphazane ring system, in contrast to M(CO)s complexation at the same positions as shown in a similar case recently [8]. 
  Reference    Z. Naturforsch. 36b, 561—565 (1981); eingegangen am 9. Dezember 1980 
  Published    1981 
  Keywords    Cyclotetraphosphazanes, NMR Spectra, Crystal Structure Cyclotetraphosphazanes 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0561.pdf 
 Identifier    ZNB-1981-36b-0561 
 Volume    36 
5Author    Ertugrul Arpac, Lutz DahlenburgRequires cookie*
 Title    Oligophosphin-Liganden, III [1] Bis(3-diphenylphosphinopropyl)phenylphospbinchloroiridium(I) * * und dessen Carbonyl-und Hydridderivate Oligophosphine Ligands, III [1] Bis(3-diphenylphosphinopropyl)phenylphosphinechloroiridium(I) and its Carbonyl and Hydride Derivatives  
 Abstract    The title complex, IrCl(bdpp) (1), where bdpp = PhP[(CH2)3PPh2]2, has been obtained from [IrCl(C8Hi4)2]2 and the triphosphine ligand. Characteristic 31 P NMR data of 1 dissolved in THF are <5(PPh2) = 2.7 and <3(PPh) = —19.9 with cis-2 J(PIrP) = 32.8 Hz. Reaction of 1 with CO proceeds stepwise to yield five-coordinate IrCl(CO)(bdpp) (2) and ionic [Ir(CO)2(bdpp)]Cl (3). A trigonal bipyramidal geometry with equatorial CO ligands is assigned to the cation of 3 on the basis of its v(CO) infrared intensities. When allowed to react with HCl, 1 gives the monohydride IrHCl2(bdpp) (4). Similarly, the dihydride IrH2Cl(bdpp) (5) is formed from 1 and H2. As has been established by IR and NMR spectroscopy, 4 and 5 adopt cis-wer-octahedral structures. 
  Reference    Z. Naturforsch. 36b, 672—676 (1981); eingegangen am 9. März 1981 
  Published    1981 
  Keywords    Bis(3-diphenylphosphinopropyl)phenylphosphine, Iridium Complexes, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0672.pdf 
 Identifier    ZNB-1981-36b-0672 
 Volume    36 
6Author    Römer, H. Scholl, H. Budzikiewicz, H. Korth, G. PulvererRequires cookie*
 Title     
 Abstract    The structure elucidation of several minor phenazine pigments of Pseudomonads is described. 4-Hydroxyphenazine-l,6-dicarboxylic acid dimethyl ester, 2,3-dihydroxy-phenazine, 2,3,7-trihydroxyphenazine, 4-hydroxyphenazine-l-carboxylic acid, 2,3-di-hydroxyphenazine-l-carboxylic acid, 2,6-dihydroxyphenazine-l-carboxylic acid and 2,3,7-trihydroxyphenazine-l,6-dicarboxylic acid are new phenazine derivatives. The distribu-tion of phenazines in the genus Pseudomonas is investigated. 
  Reference    Z. Naturforsch. 36b, 1037—1046 (1981); eingegangen am 27. März 1981 
  Published    1981 
  Keywords    Phenazines, Bacterial Constituents, Pseudomonads, NMR Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1037.pdf 
 Identifier    ZNB-1981-36b-1037 
 Volume    36 
7Author    Trimethylsilyl Tetrafluorotellurates, Vi, Benno Bildstein, Walter Tötsch, Fritz Sladky, E-F=. Me, E-RRequires cookie*
 Title    Trimethylsüyl-tetrafluorotellurate(VI)  
 Abstract    The interaction of MesSiCl with eis-and trans-(HO)2TeF 4 and eis-and £ran.s-HOTeF 4 OCH 3 yields eis-and trans-(Me3SiO)2TeF 4 and eis-and <rans-Me3SiOTeF 4 OCH3, respectively, which have been characterized by NMR spectroscopy (125 Te, 29 Si, 19 F, X H). Die Trimethylsilylgruppe ist eine häufig verwen-dete Abgangsgruppe in Reaktionen mit Fluoriden: 
  Reference    Z. Naturforsch. 36b, 1542—1543 (1981); eingegangen am 22. Juli 1981 
  Published    1981 
  Keywords    Synthesis, Trimethylsilyl Tetrafluorotellurates(VI), NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1542.pdf 
 Identifier    ZNB-1981-36b-1542 
 Volume    36 
8Author    Edgar Niecke, Anke Nickloweit-Lüke, Reinhold Rüger, Bernt Krebs, Helmut GreweRequires cookie*
 Title    .2A 3 .3A 3 -Azadiphosphiridine -Synthese, Kristallstruktur und Eigenschaften 1,2 A 3 ,3 x 3 -Azadiphosphiridines -Synthesis, Crystal Structure and Proj)erties  
 Abstract    1,2 A 3 ,3 A 3 -Azadiphosphiridines are avaüable by elimination of hydrogenhalide from ß-and y-functional molecular frameworks and by 1 + 2 cycloaddition of phosphinidenes towards aminoiminophosphanes. In contrast to other three-membered phosphorus com-pounds, azadiphosphiridines decompose by 2 +1 cycloreversion to aminoiminophosphanes and phosphinidenes. The molecular structure of an azadiphosphiridine demonstrates the trans arrangement of the exocyclic ligands and the planarity of the endocyclic nitrogen. 
  Reference    Z. Naturforsch. 36b, 1566—1574 (1981); eingegangen am 13. Juli 1981 
  Published    1981 
  Keywords    Azadiphosphiridines, Cyclisation, Thermal Decomposition, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1566.pdf 
 Identifier    ZNB-1981-36b-1566 
 Volume    36 
9Author    OttoJ. Scherer, Heribert JungmannRequires cookie*
 Title    Phosphor-Ylid-Komplexe des Platins Phosphorus Ylide Complexes of Platinum  
 Abstract    The interaction of eis/trans-[Pt(PPI13) 2 (CH2CI)Cl] (1) with Ph 3 P gives the ylide complex cis-[Pt(PPh 3) 2 (CH 2 PPh 3)Cl]Cl (2), which forms cis-[Pt(PPh 3)(CH 2 PPh 3)Cl 2 ] (3) on heating in benzene. In CH 2 C1 2 , Ph 3 P is added again quanti-tatively with formation of 2. Irradiation of 3 with a 500 W lamp yields cw-Cl 2 Pt(PPh 3) 2 . The ylide complexes 4 and 6 were prepared by treatment of 3 with (Me2N) 3 P or Ph 3 As. 3 and Ph 2 P(CH 2) 2 PPh 2 form the chelate ylide com-plex 6. 
  Reference    Z. Naturforsch. 36b, 1663—1665 (1981); eingegangen am 26. August 1981 
  Published    1981 
  Keywords    Phosphorus Ylide Complexes, Synthesis, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1663_n.pdf 
 Identifier    ZNB-1981-36b-1663_n 
 Volume    36 
10Author    Ekkehard Lindner, JuanCarlos WuhrmannRequires cookie*
 Title    Synthese und Stabilisierung von (Benzoyl-und Pentafluorbenzoyloxy)diphenyIphosphan und Vergleich mit den entsprechenden isomeren Aroyldiphenylphosphanoxiden Synthesis and Stabilization of (Benzoyl-and Pentafluorobenzoyloxy)diphenylphosphane and Comparison with the Corresponding Isomeric Aroyldiphenylphosphane Oxides  
 Abstract    (Benzoyloxy)-and (pentafluorobenzoyloxy)diphenylphosphanes RC(0)0PPh2 (2a, b) [R = C6H5 (a), C6F5 (b)] can be obtained by reaction of ClPPh2 (1) with Na02CC6H5 and Ag02CCeF5, respectively [eq. (1)]. Oxidation of 2a with molecular oxygen yields (benzoyl-oxy)diphenylphosphane oxide (3a) [eq. (2)]. The complexes (0C)5CrPPh20C(0)R (oa, b) are formed by the action of Na2OCC6Hs and Ag02CC6Fs, respectively on (OC)5CrPPh2Cl (4) [eq. (3)]. The chemical and spectroscopical properties of the (aroyloxy)diphenylphosphanes (2 a, b) are compared with the corresponding aryldiphenylphosphane oxides. 
  Reference    Z. Naturforsch. 36b, 297—300 (1981); eingegangen am 28. November 1980 
  Published    1981 
  Keywords    (Pentafluoro)(benzoyloxy)diphenylphosphanes, Pentacarbonylchromium Complexes, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0297.pdf 
 Identifier    ZNB-1981-36b-0297 
 Volume    36 
11Author    OttoJ. Scherer, Herbert ConradRequires cookie*
 Title    New Phospha(III)azenes  
 Abstract    The interaction of RR'N-PC12 (1) with LiNR"SiMe3 gives monomeric phospha(IH)-azenes RR'N-P=N-R"; R = R"=i-C3H7, R'= (CH3)3C (3a); R=;-C3H7,R'=R" = (CH3)3C (3b); R = i-C3H7, R' = (CH3)3C, R"=(CH3)3Si (3 c) as distillable liquids. 3 a adds PC13 with formation of RR'N-PC1-NR-PC12, R = i-C3H7, R'=(CH3)3C (6). 
  Reference    Z. Naturforsch. 36b, 515—517 (1981); eingegangen am 5. Februar 1981 
  Published    1981 
  Keywords    Phospha(III)azenes, NMR Spectra, PCI3 -Addition, Amino -halo -phosphines 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0515_n.pdf 
 Identifier    ZNB-1981-36b-0515_n 
 Volume    36 
12Author    Herbert Schumann, Heinrich NeumannRequires cookie*
 Title    Organometallphosphin-substituierte Übergangsmetallkomplexe, XXVII [1] Reaktionen von Pentacarbonylmangan-und Pentacarbonylrheniumbromid mit Organoelement(rVb)phosphinen Organometalphosphine-Substituted Transition Metal Complexes, XXVII [1] Reactions of Pentacarbonylmanganese-and Pentacarbonylrheniumbromide with Organoelement(IVb) Phosphines  
 Abstract    The reactions of pentacarbonyl manganese bromide and pentacarbonyl rhenium bromide with di(ter£-butyl)trimethylsilyl phosphine, teri-butyl-bis(trimethylsilyl)-, -(germyl)-, -(stannyl) phosphine, as well as with tris(trimethylsilyl)-, -(germyl)-, and -(stannyl) phosphine result in the elimination of one CO ligand and the formation either of corresponding bromo-tetracarbonyl(organometalphosphine)manganese or -rhenium complexes or of corresponding octacarbonyl-bis(/z-organometalphosphido)dimanganese or -dirhenium complexes. The IR, NMR, and Mössbauer spectra are reported and discussed. 
  Reference    Z. Naturforsch. 36b, 708—712 (1981); eingegangen am 27. Februar 1981 
  Published    1981 
  Keywords    Organometal Phosphines, Tetracarbonylmanganese Complexes, Tetracarbonylrhenium Complexes, NMR Spectra, Mössbauer Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0708.pdf 
 Identifier    ZNB-1981-36b-0708 
 Volume    36 
13Author    Ekkehard FluckRequires cookie*
 Title    Rüdiger Thamm  
 Abstract    Primary phosphanes, RPH2, react with carbonic ester chlorides, C1COOR', in the presence of K 2 C0 3 to yield the title compounds RPHCOOR' and RP(COOR') 2 . The NMR data of the novel compounds are presented and discussed. Other physical and some chemical properties are described. 
  Reference    Z. Naturforsch. 36b, 910—916 (1981); eingegangen am 11. Mai 1981 
  Published    1981 
  Keywords    Carbonic Ester Phosphides, Mass Spectra, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0910.pdf 
 Identifier    ZNB-1981-36b-0910 
 Volume    36 
14Author    DevinderK. Anand, MichaelK. Hargreaves, MohsinA. KhanRequires cookie*
 Title    Conformational Studies of R-(-f)-2-Alkylidene-and R-(—)-2-Benzylidene-5-methylcyclohexanones  
 Abstract    The eis and trans 2-alkylidene-5-methylcyclohexanones have been separated and distinguished. 2-Benzylidene-5-methylcyclohexanone was also prepared in both forms. The CD, ORD, UV and IR spectra are recorded and discussed. The NMR data include solvent and temperature effects. 
  Reference    Z. Naturforsch. 36b, 978—988 (1981); received December 1 1980/April 8 1981 
  Published    1981 
  Keywords    2-Alkyl/arylidene-5-methylcyclohexanones, CD Spectra, ORD Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0978.pdf 
 Identifier    ZNB-1981-36b-0978 
 Volume    36 
15Author    Herbert Meier, Johannes Zountsas, Oswald ZimmerRequires cookie*
 Title      
 Abstract    A X H and 13 C NMR spectroscopical study is performed on the basis of 37 1,2,3-selena-diazoles. Besides the discussion of chemical shifts and coupling constants of X H and 13 C, selenium satellites were measured providing 1 H 77 Se and 13 C 77 Se coupling constants. 
  Reference    Z. Naturforsch. 36b, 1017—1022 (1981); eingegangen am 16. April 1981 
  Published    1981 
  Keywords    NMR Spectra, 1, 2, 3-Selenadiazoles, 77 Se Coupling 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1017.pdf 
 Identifier    ZNB-1981-36b-1017 
 Volume    36 
16Author    Ekkehard Lindner, Claus-Peter Krieg, Sigurd Hoehne, Axel RauRequires cookie*
 Title    Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, XXTTT [1] Untersuchungen zur P=S-heteroanalogen Cyclocotrimerisierung von Alkinen mit Nitrilen bzw. Isocyaniden Preparation and Properties of, and Reactions with, Metal-Containing Heterocycles, XXIII [1] Investigations on P=S-Heteroanalogous Cyclocotrimerization of Alkynes with Nitriles and Isocyanides, Respectively  
 Abstract    Structure of [(OC)4MnSP(CH 3)2]2, The dimanganadiphosphadithiacyclohexadiene [(OC)4MnSP(CH 3)2]2 (1) crystallizes in the H,C CH, \ / 3 / P =\ (OC).Mn Mn(CO), * \ / S=P /\ HjC CHj 1 /-PC CH * (OC)tMn I CH, * L Y\ CH, (OCULMn | CHj . CO \ ^ C" \R' L \ t-Bu C6H" C6H5 R'NC a b c PR'3 d R = C02CHJ 3a-d orthorhombic space group Pbca with Z = 4. Attempts to cyclotrimerize the intermediate 
  Reference    Z. Naturforsch. 36b, 1487—1492 (1981); eingegangen am 28. Juli 1981 
  Published    1981 
  Keywords    Isocyanide Complexes of Heteromanganacyclopentadienes, Mass Spectra, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1487.pdf 
 Identifier    ZNB-1981-36b-1487 
 Volume    36 
17Author    H.-R SchultenRequires cookie*
 Title      
 Abstract    A combined 13 C nuclear magnetic resonance and field desorption mass spectrometric investigation of algae grown on 13 C02 has shown that the isotopic enrichment of amino acids extracted therefrom is neither uniform nor statistical. The use of these two indepen-dent techniques allows a new, detailed and accurate insight into the label distribution resulting from biosynthesis. The observed deviations from the statistical abundances are systematic. A system for classifying each member of the complex ensemble of isotopic species has been devised, so that the isotopomers may be ordered according to their relative probability of occurrence. 
  Reference    Z. Naturforsch. 36b, 1289—1296 (1981); received May 20 1981 
  Published    1981 
  Keywords    13 C Enriched Amino Acids, Biosynthesis, Label Distribution, NMR Spectra, Field Desorption Mass Spectrometry 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1289.pdf 
 Identifier    ZNB-1981-36b-1289 
 Volume    36 
18Author    PeterM. Kaiser®, Reinhard Nesper, Karl-Friedrich Tebbe, Herbert Witzel»-Requires cookie*
 Title    Pyridin-4-on-Nueleosid + : Stabilisierung der Struktur im Kristall und in wäßriger Lösung Pyridine-4-on Nucleoside: Stabilisation of the Structure in the Crystal and in Aqueous Solution  
 Abstract    C10H13NO5 • H2O is monoclinic, space group P2i with a = 773.7 pm, b = 814.6 pm, c= 932.6 pm, ß = 109.36° at 143 K, Z = 2. The crystal structure has been refined to R =0.031 with 1340 counter reflections. Features of this nucleoside include an orientation of the base at the glycosidic bond N(l)-C(l') in the anii-range (52.5°), a ribosyl moiety in the C(2')-endo(S) conformation and in contrast to many other nucleosides a trans arrange-ment at C(4')-C(5'). This unusual conformation is stabilized by a distinct H-bonding scheme including the water molecule and the oxygen of the adjacent pyridin-4-on ring system. NMR data indicate on the other side that in solution the conformation of the nucleoside is anti/g + similar to that of other pyrimidine nucleosides. The 5'-OH group replaces the water molecule in the crystal. The preferred anti position of the base cannot be explained by an interaction of H(2,6) of the base with the 5'-OH group or the C(4) oxygen. Both protons which couple with H(3,5) coalesce in a single sharp doublet. Water entropy seems to be the decisive factor for the stabilization of the anti/g+ conformation in aqueous solution. 
  Reference    Z. Naturforsch. 36b, 1632—1639 (1981); eingegangen am 3. Juli 1981 
  Published    1981 
  Keywords    Pyridine-4-on Nucleoside, X-ray, NMR Spectra, Conformational Differences, Water Entropy 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1632.pdf 
 Identifier    ZNB-1981-36b-1632 
 Volume    36 
19Author    Rudolf Hansel, Faeis Khaliefi, Andrew PelterRequires cookie*
 Title    3.5-Dihydroxy  
 Abstract    6.7.8-trimethoxyflavon aus Heiichrysum graveolens: Bestätigung der Konstitution Confirmation of the Structure of an Extractive from Helichrysum graveolens as 3,5-Dihydroxy-6,7,8-trimethoxyflavone 
  Reference    Z. Naturforsch. 36b, 1171—1172 (1981); eingegangen am 12. Mai 1981 
  Published    1981 
  Keywords    3, 5-Dihydroxy-6, 7, 8-trimethoxyflavone, Isomeric a-Hydroxybenzalcumaranone, X ray, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1171.pdf 
 Identifier    ZNB-1981-36b-1171 
 Volume    36