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'NMR Spectra' in keywords Facet   Publication Year 1982  [X]
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1982[X]
1Author    Dieter Rehder, Hans-Christoph Bechthold, Ahmet Keçeci, Hartwig Schmidt, Michael SiewingRequires cookie*
 Title    A Comparative Study of Metal Shielding in Low Valent Vanadium, Niobium and Manganese Complexes  
 Abstract    Variations of the metal chemical shifts <5(51 V), <5(55 Mn) and <S(93 Nb) with the para-magnetic deshielding contribution to the overall shielding are discussed in terms of influences imposed by the ligand field splitting, the nephelauxetic effect and the covalency of the metal-to-ligand bond. Complexes under investigation are isoelectronic and/or iso-structural series [M(CO)6_nL"]<i (M = V, Nb: q = —1; M = Mn: q = + 1; n = 0-6), 7? 5 -C5H5M(CO)4-KLn (M = V, Nb; n = 0-4) and r? 5 -C5H5M(L /)2L (M = V, L' = NO; M = Mn, L' = CO). L is a monodentate or l/n oligodentate phosphine. <5 varies with the point symmetry of the complex, and with ligand parameters of primarily electronic or steric origin. Generally, for weak to medium ^-interaction, there is a decrease of shielding with decreasing yr-acceptor power of the ligand, increasing ligand bulkiness, increasing ring strains in chelate structures and increasing degree of substitution. For strong ^-inter-action, the trends may be interconverted. PF3 is shown to be a slightly weaker 7r-acceptor than CO. Selected results on nuclear-spin spin coupling constants, 13 C and 31 P shielding are also presented. 
  Reference    Z. Naturforsch. 37b, 631—645 (1982); eingegangen am 25. November 1981 
  Published    1982 
  Keywords    Carbonylphosphinevanadium, Carbonylphosphineniobium, Carbonylphosphinemanganese, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0631.pdf 
 Identifier    ZNB-1982-37b-0631 
 Volume    37 
2Author    Fritz Preuss, Lothar OggerRequires cookie*
 Title    Alkylvanadium( V) -Verbindungen Darstellung und NMR-spektroskopische Untersuchungen Alkylvanadium(V) Compounds S\ T nthesis and NMR Spectroscopic Studies  
 Abstract    The compounds Li["C4H9V0(0«C4H9)3], Me3SiCH2V(0<C4H9)3, (CH3)2V(OSiMe3)2 and V(0'C4Hg)4 have been prepared by reaction of esters VO(OR)3(R = J C4H9, SiMes) with lithium alkyls. RV0(0'C4H9)2 species are not formed by direct alkylation of VO(O f C4H 9)3 with LiR; albeit in small yields, these compounds (R = CH3, CH 2 SiMe3) can be synthesized however from V0(0«C4H9)2C1. The 51 V, and 13 C NMR spectra of the vanadium(V) and vanadium(IV) compounds are discussed; the constants of 51 V, iH and 51 V, 13 C coupling have been determined. 
  Reference    Z. Naturforsch. 37b, 957—964 (1982); eingegangen am 15. Februar 1982 
  Published    1982 
  Keywords    Alkylvanadium(V) Compounds, Preparation, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0957.pdf 
 Identifier    ZNB-1982-37b-0957 
 Volume    37 
3Author    OttoJ. Scherer, Klaus-Dieter KriegerRequires cookie*
 Title    Diazadiphosphetidine Platinum(O) Complexes  
 Abstract    The reaction of Pt(COD)2 with cw-[RPNCR3]2 (1), R = CH3, affords the two-coordinate platinum(O) complex PtLo (2) (L = diazadiphosphetidine 1). In benzene solution PtL2, Pt2L3 (3) and L are in equilibrium. 2 and diphenylacetylene or fumaric acid dinitrile give the platinum diazadiphosphetidine complexes LoPt(PhCCPh) (4) and L2Pt[H(NC)CC(CN)H] (5), L = 1. 
  Reference    Z. Naturforsch. 37b, 1041—1043 (1982); eingegangen am 17. Februar 1982 
  Published    1982 
  Keywords    Diazadiphosphetidine Complexes, Synthesis, Reactions, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1041.pdf 
 Identifier    ZNB-1982-37b-1041 
 Volume    37 
4Author    Barteld De Ruiter, Geert Kuipers, JanH. Bijlaart, JohanC. Van De GrampelRequires cookie*
 Title    Derivatives of NPC12(NS0C1)2 and (NPC12)2NS0C1, Part XX [1] Reactions of Some Inorganic Ring Systems with N,N' -Dimethylethylenediamine  
 Abstract    Reactions of the ring systems (NPC12)3, (NPCl2)2NSOX, and NPC12(NS0X)2 (X = Cl, Ph) with N,N'-dimethylethylenediamine lead to mono-, bis-, and tris(spirocyclic) com-pounds as the only characterizable products. The X H and 31 P NMR parameters are re-ported and briefly discussed. 
  Reference    Z. Naturforsch. 37b, 1425—1429 (1982); received June 18 1982 
  Published    1982 
  Keywords    Phosphorus-Sulfur-Nitrogen Heterocycles, Diazaphospholidines, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1425.pdf 
 Identifier    ZNB-1982-37b-1425 
 Volume    37 
5Author    Rolf Minkwitz, Rüdiger NaßRequires cookie*
 Title    Spektroskopische Untersuchungen an Monofluorammoniumsalzen Spectroscopic Studies on Monofluorammonium Salts  
 Abstract    The NMR, IR and Raman spectra of several NHaF+X -salts are reported. The prepara-tion of NH3F+SO3CI-and NH3F+SO3F-is described. 
  Reference    Z. Naturforsch. 37b, 1558—1563 (1982); eingegangen am 21. Juli 1982 
  Published    1982 
  Keywords    NMR Spectra, Raman Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1558.pdf 
 Identifier    ZNB-1982-37b-1558 
 Volume    37 
6Author    Jörn Müller, Wolfgang Hähnlein, Barbara PassonRequires cookie*
 Title    TT-Olefin-Iridium-Komplexe, IX [1] Bis(?y 4 -butadien)-(7-organyl-iridium-Verbindungen TI-Olefin Iridium Complexes, IX [1] Bis(fy 4 -butadiene)-cr-organyl-iridium Compounds  
 Abstract    Complexes of the type [L2IrR] (L = butadiene, isoprene, piperylene, 1,4-and 2,3-dimethylbutadiene; R = CH3, CeHs) have been synthesized by reactions of [L2IrCl] with LiR in hexane. With L = 2,3-dimethylbutadiene, [L2IrR] compounds with higher alkyl groups R (e.g. n-C3H7, n-CjHg) can be obtained which for steric reasons are inert against ^-elimination. Th© system [L2IrCl]/L/LiAlH4 (L = 2,3-dimethylbutadiene) yields [L2IrR] with R = 2,3-dimethylbutene-2-yl. The complexes were characterized by NMR and mass spectra. 
  Reference    Z. Naturforsch. 37b, 1573—1579 (1982); eingegangen am 8. Juli 1982 
  Published    1982 
  Keywords    Synthesis, Mass Spectra, NMR Spectra, yr-Olefm Iridium Complexes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1573.pdf 
 Identifier    ZNB-1982-37b-1573 
 Volume    37 
7Author    HansH. KarschRequires cookie*
 Title    Funktionelle Trimethylphosphanderivate, XVII [1]  
 Abstract    Methyl-bis(dimethylphosphinomethyl)phosphan, (Me2PCH2)2PMe Functional Derivatives of Trimethylphosphane, XVII [1] Methyl-bis(dimethylphosphinomethyl)phosphane, (Me2PCH2)2PMe (Me 2 PCH2)2PMe (3) is obtained from MePCl 2 (2a) or MeP(OPh) 2 (2b) and LiCH 2 PMe 2 (1). The oxides [Me 2 P(0)CH 2 ] 2 PMe (4) and [Me 2 P(0)CH 2 ] 2 P(0)Me (5), are formed on the reaction with air. Quaternisation with Mel gives the salts [(Me3PCH2)2PMe]l2 (6) and [(Me3PCH2)2PMe2]l3 (12). For comparison, also the isoelectronic (Me3SiCH2)2PMe (7), and (Me3SiCH2)2P 4 Bu (8), are synthesized and transformed to their methylphosphonium salts 10 and 11. WithCH 2 Br 2 , 3 forms the six-membered heterocycle [MeP(CH 2 PMe2)2CH 2 ]Br2 (13 a), which could not be isolated in a pure state, however. 3 may be metalated by LiBu: Li[Me2PCHP(Me)CH2PMe2] (15), is obtained, but a second metalation step could not be observed. The hydrolysis of 12 under unusual mild conditions (H2O or H2O/CH3OH) gives [Me2P(0)CH 2 PMe3]I (16), and [Me 4 P]I (17), as main products. Properties and NMR data of the new compounds are described. 
  Reference    Z. Naturforsch. 37b, 284—291 (1982); eingegangen am 12. Oktober 1981 
  Published    1982 
  Keywords    Triphosphane (PCPCP), Phosphonium Salts, Hydrolysis, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0284.pdf 
 Identifier    ZNB-1982-37b-0284 
 Volume    37 
8Author    Elmar Flaskamp, -A, Gottfried Zimmermann, »., Gerhard Nonnenmacher, Otto IsaacRequires cookie*
 Title    Untersuchungen zur Charakterisierung des Prochamazulens Matrizin aus Matricaria chamomilla L. Studies on the Characterization of the Chamazulene Precursor Matricine from Matricaria chamomilla L  
 Abstract    The relative configuration of the thermolabile chamazulene precursor matricine has been established by NMR spectrometric studies. The NMR spectral data prove to be consistent with the well-known structure of the chamomile component. On the basis of our results the levorotatory natural substance moreover can be specified stereochemically as (—)-(3S*, 3aR*, 4S*, 9R*, 9aS*, 9bS*)-4-acetoxy -2,3,3a,4,5,9,9a,9b -octahy dro -9 -hydroxy -3,6,9 -trimethy lazuleno [4,5 -b ]furan -2 -one. 
  Reference    Z. Naturforsch. 37b, 508—511 (1982); eingegangen am 24. November 1981 
  Published    1982 
  Keywords    Matricaria chamomilla L, Matricine, NMR Spectra, Stereochemistry 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0508.pdf 
 Identifier    ZNB-1982-37b-0508 
 Volume    37 
9Author    Lutz Dahlenburg, Fazlollah Mirzaei, Ah YardimciogluRequires cookie*
 Title    Alkyl-und Arylkomplexe des Iridiums und Rhodiums  
 Abstract    , IX [1] Organorhodiumverbindungen Rh(R)(CO)(PPh3)2 (R = Alkyl, Aryl) und homologe Iridiumalkyle Alkyl and Aryl Complexes of Iridium and Rhodium, IX [1] Organorhodium Compounds Rh(R)(CO)(PPh3)2 (R = Alkyl, Aryl) and Related Iridium Alkyls A series of organorhodium and -iridium complexes M(R)(CO)(PPh 3)2 (M = Rh: R = CeHs, 2-MeC6H4, 4-MeC6H4, 2,4,6-Me3C6H2, CH3, CH2SiMe3, CH2CMe3; M = Ir: R = CH3, CH2Ph, CH2SiMe3, CH2CMe3) has been prepared from MCl(CO)(PPh3)2 and the correspond-ing organolithium or Grignard reagents. Of these compounds, the mesitylrhodium complex Rh(2,4,6-Me3C6H2)(CO)(PPh3)2 as well as the iridium and rhodium alkyls with Me3SiCH2 and Me3CCH2 ligands show cis,irans-isomerism which is demonstrated on the basis of infrared and NMR spectroscopic evidence. 
  Reference    Z. Naturforsch. 37b, 310—317 (1982); eingegangen am 23. Oktober 1981 
  Published    1982 
  Keywords    Rhodium, Iridium, Organometallic Compounds, eis, frarw-Isomerism, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0310.pdf 
 Identifier    ZNB-1982-37b-0310 
 Volume    37 
10Author    Ekkehard Lindner, Michael SteinRequires cookie*
 Title    Darstellung, Eigenschaften und Reaktivität von 2-, 3-und 4-Chloracyl(diphenyl)phosphanoxiden Preparation, Properties and Reactivity of 2-, 3-and 4-Chloroacyl(diphenyl)phosphane Oxides  
  Reference    Z. Naturforsch. 37b, 407—411 (1982); eingegangen am 26. November 1981 
  Published    1982 
  Keywords    Chloroacyl(diphenyl)phosphanes, Diphosphorylated Alcohols, MS, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0407.pdf 
 Identifier    ZNB-1982-37b-0407 
 Volume    37 
11Author    Josef Hahn, Marianne Baudler, Carl Krüger, Yi-Hung TsayRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 116 [1] Kernresonanzspektren und Kristallstruktur von Tri -tert-butyl -cy clotriphosphan Contributions to the Chemistry of Phosphorus, 116 [1] NMR Spectra and Crystal Structure of Tri-terf-butylcyclotriphosphane  
  Reference    Z. Naturforsch. 37b, 797—805 (1982); eingegangen am 1. März 1982 
  Published    1982 
  Keywords    Tri-ier^-butylcyclotriphosphane, Threo-Membered Ring Compounds, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0797.pdf 
 Identifier    ZNB-1982-37b-0797 
 Volume    37 
12Author    Rüdiger Thamm, Ekkehard FluckRequires cookie*
 Title    Kohlensäureesterphosphide -Synthese und Cyclisierungsreaktionen Carbonic Ester Phosphides -Synthesis and Cyclization Reactions  
 Abstract    Carbonic ester phosphides, RPHCOOR' and RP(COOR')2, have been prepared by the reaction of C1COOR' with primary phosphines RPH2 in the presence of K2CO3. Some compounds of RPHCOOR' series are transformed into P-heterocycles through addition of the P-H group to the C = C doubleboncl systems. The 31 P NMR data, IR and mass spectra of the novel compounds are presented and discussed. 
  Reference    Z. Naturforsch. 37b, 965—974 (1982); eingegangen am 8. März 1982 
  Published    1982 
  Keywords    Carbonic Ester Phosphides, Mass Spectra, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0965.pdf 
 Identifier    ZNB-1982-37b-0965 
 Volume    37 
13Author    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 
14Author    Henri Brunner, MonikaE. Dylla, GabrieleA M Hecht, Willigis PieronczykRequires cookie*
 Title    Synthese von ß-Diphenylphosphin-carbonyl-Verbindungen durch Umsetzung von Brommethyl-earbonyl-Verbindungen mit Diphenyl(trimethylsilyl)phosphin Synthesis of /9-Diphenylphosphine-carbonyl Compounds by Reaction of Bromomethyl-carbonyl Compounds with Diphenyl(trimethylsilyl)phosphine  
  Reference    Z. Naturforsch. 37b, 404—406 (1982); eingegangen am 13. November 1981 
  Published    1982 
  Keywords    /3-Keto-phosphines, Amino-phosphines, Imino-phosphines, Synthesis, NMR Spectra, Optical Activity 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0404.pdf 
 Identifier    ZNB-1982-37b-0404 
 Volume    37 
15Author    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