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'NMR Spectra' in keywords Facet   section ZfN Section B:Volume 042  [X]
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1987 (7)
1Author    FranzL. Dickert, MichaelW. VonendRequires cookie*
 Title    Konkurrierende Koordination von Kronenethern, Perchloratanionen und Lösungsmittelmolekülen am Co(II)-Ion — Eine Leitfähigkeits-und NMR-Studie in Nitromethan Anions and Solvent Molecules at Co(II)-Ions — A Conductivity and NMR Study on Nitromethane  
 Abstract    The 1:1 complexes between Co(II) and the crown ethers dibenzo[24]crown-8, dibenzo[18]-crown-6 and [18]crown-6 show a molar conductivity in nitromethane which indicates coordination of even Perchlorate anions. The substitution of this anion by solvent molecules can be monitored by conductometric titrations. This procedure reveals that dibenzo[24]crown-8 and [18]crown-6 is a potent five dentate ligand whereas dibenzo[18]crown-6 strongly coordinates only via three donor atoms. The mixed complexes with crown ether and methanol show strong outer-sphere associa-tion with the Perchlorate anions, which can be confirmed by investigations with [15]crown-5 complexes. 
  Reference    (Z. Naturforsch. 42b, 42—46 [1987]; eingegangen am 15. August/17. Oktober 1986) 
  Published    1987 
  Keywords    Crown Ether, Complex Formation Ionic Conductivity, NMR Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0042.pdf 
 Identifier    ZNB-1987-42b-0042 
 Volume    42 
2Author    R. Minkwitz, H. Prenzel, H. PritzkowRequires cookie*
 Title    Beiträge zur Chemie der Schwefel-Halogenide, 17 [1] Dimethyl(methylthio)-und Dimethyl(phenylthio)sulfonium-Salze Contributions to the Chemistry of Sulfur Halides, 17 [1] Dimethyl(methylthio)-and Dimethyl(phenylthio)sulfonium Salts  
 Abstract    IR, Raman and NMR spectroscopic studies of dimethyl(methylthio)-and dimethyl(phenyl-thio)sulfonium salts (CH 3) 2 SSR + A~ (R -CH 3 , C 6 H 5 ; A = AsF 6 ~, SbCl 6 ~) are reported. The crystal structure of (CH 3) 2 SSCH 3 + AsF 6 ~ shows for the cation a conformation different from that reported for the hexachloroantimonate. 
  Reference    Z. Naturforsch. 42b, 750—755 (1987); eingegangen am 5. Dezember 1986/4. Februar 1987 
  Published    1987 
  Keywords    Thiosulfonium Salts, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0750.pdf 
 Identifier    ZNB-1987-42b-0750 
 Volume    42 
3Author    Hansjörg Grützm, H. Erbert, W. Roesky, Mathias Noltem, GeorgeM. SheldrickRequires cookie*
 Title    Substitutionsreaktionen am N-[l-Chlor-2,2,2-trifluor-l-(trifluormethyl)ethyl]-dimethyIformamidin Substitution Reactions with N -[l-Chloro-2,2,2-trifluoro-l-(trifluorom ethyl)ethyl]-dim ethylform am idine  
 Abstract    It is difficult to achieve nucleophilic attack on a carbon atom bonded on two trifluoromethyl groups. However, N-[l-chloro-2,2,2-trifluoro-l-(trifluoromethyl)ethyl]-dimethylformamidine (1) reacts readily with H20 , MeOH, EtSH and P(OM e)3 even under mild conditions to form products 2, 3, 4 and 5. The reaction between 1 and Ph2PH is complex but leads in nearly quantitative yield to N-[2,2,2-trifluoro-l-(trifluoromethyl)ethyl]-dimethylformamidinium chloride 6 which has been characterized by an X-ray structure analysis. A reaction mechanism is proposed. 
  Reference    Z. Naturforsch. 42b, 1245—1248 (1987); eingegangen am 5. Mai/27. Juni 1987 
  Published    1987 
  Keywords    MS Spectra, Fluoroorganic Compounds, NMR Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1245.pdf 
 Identifier    ZNB-1987-42b-1245 
 Volume    42 
4Author    Gernot Heckmann, Ekkehard Fluck, Peter KuhmRequires cookie*
 Title    A [l,3,4]Thiazaphospholidine, Preparation and NMR Data  
 Abstract    Preparation and properties of a [l,3,4]thiaza-phospholidine are described. The 31 P. 13 C and 'H NMR spectra in double and triple resonance mode are recorded and discussed in detail. 
  Reference    (Z. Naturforsch. 42b, 115—117 [1987]; eingegangen am 29. August 1986) 
  Published    1987 
  Keywords    [l, 3, 4]Thiazaphospholidine, NMR Spectra, Triple Resonance 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0115_n.pdf 
 Identifier    ZNB-1987-42b-0115_n 
 Volume    42 
5Author    H. G. Alt, H. E. EngelhardtRequires cookie*
 Title    Bis-acetylene Complexes of Niobium and Tantalum  
 Abstract    The photo-induced reaction of C 5 Me 5 M(CO) 4 complexes (M = Nb, Ta) with excess alkynes R'C 2 R : (R\ R 2 = H, Me, Ph, Hex) in pentane solution results in the formation of the bis-acetylene complexes C 5 Me 5 M(R'C 2 R 2) 2 CO. In these complexes the jr-bonded acetylene ligands behave formally as three electron ligands. 
  Reference    Z. Naturforsch. 42b, 711—714 (1987); eingegangen am 10. Dezember 1986/23. Januar 1987 
  Published    1987 
  Keywords    Bis-acetylene Complexes of Niobium and Tantalum, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0711.pdf 
 Identifier    ZNB-1987-42b-0711 
 Volume    42 
6Author    Lothar Weber, Georg MeineRequires cookie*
 Title    Zur Reaktivität von Diphosphenylkomplexen des Eisens und Rutheniums gegenüber Tetracarbonylnickel Transition Metal Substituted Diphosphenes, VI [1] On the Reactivity of Diphosphenyl Complexes of Iron and Ruthenium towards Tetracarbonyl Nickel  
 Abstract    The diphosphenyl complexes (?/ 5 -CsMe0(CO 2)M-P = P-Ar (8) (M = Fe, Ru; Ar = 2,4,6-rm-BU,C 6 H 2) react with excess Ni(CO) 4 to yield the adducts (77 5 -C 5 Me 5)(CO) 2 M[Ni(CO) 3 ]P=PAr (9). The products have been characterized by elemental analysis as well as by spectroscopic data (IR. 'H, 13 C, 31 P NMR). 
  Reference    Z. Naturforsch. 42b, 774—776 (1987); eingegangen am 26. Januar 1987 
  Published    1987 
  Keywords    Metal Substituted Diphosphenes, Tetracarbonyl Nickel, NMR Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0774.pdf 
 Identifier    ZNB-1987-42b-0774 
 Volume    42 
7Author    Udo Kunze, Rolf TittmannRequires cookie*
 Title    Phosphinsubstituierte Chelatliganden, XXIII [1] Darstellung und NMR-Spektren von Alkyl-arylphosphinothioformamiden, R(Ph)PC(S)NHMe Phosphine-Substituted Chelate Ligands, XXIII [1] Synthesis and NMR Spectra of Alkyl-arylphosphinothioformamides, R(Ph)PC(S)NHMe  
 Abstract    A series of alkyl-arylsubstituted N-methyl phosphinothioformamides, R(Ph)PC(S)NHMe (2 a—g), with varying bulkiness of the alkyl rest was synthesized from the racemic secondary phosphines la—g and methyl isothiocyanate. 'H and 13 C NMR spectra of 2a—g reveal signal sets of diastereotopic nuclei due to the asymmetry of the molecule. The chemical shift and coupling constants were confirmed by simulation in case of 2b, c. The vicinal 31 P— 13 C cou-plings of the menthyl and neomenthyl compounds 2f, g show an "anti-Karplus" behaviour CJ(gauche) > ? J(trans)) and allow the conformational assignment of the alicyclic group. The 31 P chemical shifts of 2a—d give a linear correlation with the cone angle of the alkyl substituents quoted from literature. 
  Reference    (Z. Naturforsch. 42b, 77—83 [1987]; eingegangen am 8. August 1986) 
  Published    1987 
  Keywords    Alkyl-arylphosphinothioformamides, Menthyl and Neomenthyl Derivatives, NMR Spectra, Conformational Analysis, Substituent Influence 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0077.pdf 
 Identifier    ZNB-1987-42b-0077 
 Volume    42