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1981 (332)
1Author    Joseph Grobe, BerndHeinz SchneiderRequires cookie*
 Title    Elektrochemische Synthesen, IV [1] Metallcarbonylverbindungen der Eisengruppe  
 Abstract    The electrochemical synthesis of iron, cobalt, and nickel carbonyl compounds from metal acetylacetonates of oxidation state + II or + III and from metal anodes is de-scribed, solvent effects and the problem of cluster formation are discussed. 
  Reference    (Z. Naturforsch. 36b, 1—7 [1981]; eingegangen am 15. Oktober 1980) 
  Published    1981 
  Keywords    Electrochemical Synthesis, Iron Carbonyl Compounds, Nickel Carbonyl Compounds, Cobalt Carbonyl Compounds 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0001.pdf 
 Identifier    ZNB-1981-36b-0001 
 Volume    36 
2Author    Joseph Grobe, BerndHeinz SchneiderRequires cookie*
 Title    Elektrochemische Synthesen, V [1] Phosphansubstituierte Metallcarbonyle der Eisengruppe  
 Abstract    The electrochemical synthesis of iron, cobalt, and nickel carbonyl derivatives with phosphane ligands from metal anodes is described. 
  Reference    (Z. Naturforsch. 36b, 8—13 [1981]; eingegangen am 15. Oktober 1980) 
  Published    1981 
  Keywords    Electrochemical Synthesis, Metal Carbonyls, Phosphane Ligands 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0008.pdf 
 Identifier    ZNB-1981-36b-0008 
 Volume    36 
3Author    F. Hulliger, T. SiegristRequires cookie*
 Title    The Crystal Structures of BaSe2 and BaSe3  
 Abstract    Crystal Structure, Polyselenides BaSe2 crystallizes with a monoclinic cell, a = 9.820(5), 6 = 4.929(3), c = 9.335(5) A, ß = 118.48(5)°; Z = 4, space group C 2/c. BaSe3 is tetragonal, a = 7.2802(5), c = 4.2495(4) A; Z — 2, space group P42im. Both polyselenides are isotypic with the corresponding poly sulfides. 
  Reference    (Z. Naturforsch. 36b, 14—15 [1981]; received September 9 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0014.pdf 
 Identifier    ZNB-1981-36b-0014 
 Volume    36 
4Author    Gerd Becker, Gudrun Gresser, Werner UhlRequires cookie*
 Title    Acyl-und Alkylidenphosphane, XV [1] 2.2-Dimethylpropylidinphosphan, eine stabile Verbindung mit einem Phosphoratom der Koordinationszahl  
 Abstract    In the presence of small amounts of solid sodium hydroxide, [2,2-dimethyl-l-(trimethyl-siloxy)propylidene]-trimethylsilylphosphine reacts at -f 20 °C to give hexamethyldisil-oxane and 2,2-dimethylpropylidynephosphine (2). In contrast to similar alkylidyne-phosphines this compound is stable at room temperature. The IR and mass spectrum are discussed, and iH, 13 C and 31 P NMR spectral data are given. 
  Reference    (Z. Naturforsch. 36b, 16—19 [1981]; eingegangen am 3. Oktober 1980) 
  Published    1981 
  Keywords    Alkylidynephosphines, 2, 2-Dimethylpropylidynephosphine, P-C Triple Bond 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0016.pdf 
 Identifier    ZNB-1981-36b-0016 
 Volume    36 
5Author    Ahmet Keçeci, Dieter RehderRequires cookie*
 Title    IR, 31 P-, 55 Mn-und 185 187 Re-NMR spektroskopische Untersuchungen an einigen Carbonylmangan-und -rhenium-Komplexen  
 Abstract    The IR and NMR spectra of the complexes [M(CO)e]Cl • HCl (M = Mn: 1, M = Re: 2), M(C0)5C02Et (M = Mn: 3, M = Re: 4), [Mn(CO)5PR3][PF6] (5; PR3 = PPh(OPh)2: a, P(n-Pr)3: b, PHPh2: c, PPh(NEt2)2: d, P(p-C6H4F)3: e), [Be(CO)5PHPh8][FF6] (6 c), Mn2(CO)s(PR3)2 (7) and Re2(CO)g(PHPh2)2 (8c) are discussed in the context of a-and ^-interactions in the metal-ligand system and compared with 51 V NMR data of the analogous isoelectronic and isostructural carbonylvanadates (—I). On the basis of these results, the phosphines are arranged in the order of decreasing integral ligand strength according to a>b>c>d. The 55 Mn shielding of 5 is greater than that of 1, which is explained by strong (x-interactions and correspondingly large e-ai* splitting dominating the paramagnetic deshielding term in the pseudooctahedral complexes of type 5. The only rhenium compound accessible to NMR is 2, for which the 185 Re and 187 Re resonances were obtained. 31 P coordination shifts are positive for all complexes. Spectroscopic data for 7c show that this complex presumably has the structure (CO)sMn-Mn(CO)3(PHPh2)2, contrasting 7 a, 7 b, 7d and 7e (local D4d symmetry). 
  Reference    (Z. Naturforsch. 36b, 20—26 [1981]; eingegangen am 6. Oktober 1980) 
  Published    1981 
  Keywords    Carbonylphosphinemanganese, Car bony lphosphinerhenium, IR Spectra, Manganese NMR Spectra, Rhenium NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0020.pdf 
 Identifier    ZNB-1981-36b-0020 
 Volume    36 
6Author    Erwin Brechtel, Gerhard Cordier, Herbert SchäferRequires cookie*
 Title    Über Oxidpnictide s Zur Kenntnis von B^Mn^bgO und Ba2Mn2Bi20  
 Abstract    The new oxide pnictides Ba2Mn2Sb20 and Ba2Mri2Bi20 crystallize in the hexagonal system (space group P63/mmc) with the following constants: 
  Reference    (Z. Naturforsch. 36b, 27—30 [1981]; eingegangen am 14. Oktober 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0027.pdf 
 Identifier    ZNB-1981-36b-0027 
 Volume    36 
7Author    Heinrich Nöth, Robert Rurländer, Peter WolfgardtRequires cookie*
 Title    Solutions of Lithium Tetrahydrido Aluminates in Ethers: a 'Li and 27 AI NMR Study  
 Abstract    Solutions of LiAlH4 in tetrahydrofuran (THF), glycoldimethylether (monoglyme), diglycoldimethylether (diglyme) and triglycoldimethylether (triglyme) as well as solutions of LiAlH4/THF in toluene have been investigated by 7 Li and 27 A1 NMR. It was found that <5 27 A1 is nearly independent of the solvent as is 1 J(A1H). However, the line width of the 27 A1 NMR signal shows strong solvent influences and, in addition, concentration and temperature dependence. Intermolecular hydride exchange becomes rapid in solutions of monoglyme and triglyme at room temperature. This can also be shown by the H/D exchange between LiAlH4 and L1AID4. <5 7 Li data indicate that Li is hexacoordinated in the series of glycoldimethylethers, and LiAlH4 in diglyme seems to be the system in which the AIH4 moiety is least affected by ion pair or triple ion formation. 
  Reference    (Z. Naturforsch. 36b, 31—41 [1981]; received July 28 1980) 
  Published    1981 
  Keywords    Lithium Tetrahydroaluminates, Lithium Tetradeuterioaluminates, 7 Li NMR Spectra, 27 A1 NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0031.pdf 
 Identifier    ZNB-1981-36b-0031 
 Volume    36 
8Author    B. P. Baranwal, G. K. Parashar, R. C. MehrotraRequires cookie*
 Title    Penta-Coordinated Complexes of Bis(2,4-pentanedionato) Copper(II) with Some Oxygen Donor Organic Solvents  
  Reference    (Z. Naturforsch. 36b, 42—44 [1981]; received June 30 1980) 
  Published    1981 
  Keywords    Bis(2, 4-pentanedionato) Copper(II) Complexes, ER Spectra, Magnetic Moments, IR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0042.pdf 
 Identifier    ZNB-1981-36b-0042 
 Volume    36 
9Author    Herbert Binder, Jürgen PalmtagRequires cookie*
 Title    Zur Reaktion zwischen Bortrifluorid und Natrium-diethylphosphit Darstellung und Reaktionen von Tris(diethylphosphitoboran) The Reaction between Borontrifluoride and Sodium Diethylphosphite Synthesis and Reactions of Tris(diethylphosphitoborane)  
 Abstract    Tris(diethylphosphitoborane) (2) can be synthesized by the reaction of BF3-0(C2H5)2 with sodium diethylphosphite. The chemical behaviour of this new compound and its NMR data are reported. 
  Reference    (Z. Naturforsch. 36b, 45—47 [1981]; eingegangen am 22. Juli/9. September 1980) 
  Published    1981 
  Keywords    Tris(diethylphosphitoborane), Reactions, Rearrangement 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0045.pdf 
 Identifier    ZNB-1981-36b-0045 
 Volume    36 
10Author    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 
11Author    Gertrud KielRequires cookie*
 Title    Preparation and Crystal Structure of SbCl3 * I2 * 1,4-Dithiane  
 Abstract    The darkred compound SbCl3 • I2 • S2C4H8 has been prepared and its crystal structure determined. This new compound crystallizes in the monoclinic system, space group P2i, with a = 849.2 pm, b = 904.2 pm, c = 923.6 pm and ß = 106.1° at a temperature of 113 K, and with a = 858.8(2) pm, b = 914.7(3) pm, c = 934.0(4) pm and ß = 106.62(3)° at a tem-perature of 293 K, respectively. The structure is buüt up from chains (SC2H4S-I-I-ClSbCl2) oo with a y-trigonal bipyramid around Sb. 
  Reference    (Z. Naturforsch. 36b, 55—58 [1981]; eingegangen am 19. August/22. Oktober 1980) 
  Published    1981 
  Keywords    Iodine Antimony Trichloride 1, 4-Dithiane, Crystal Structure 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0055.pdf 
 Identifier    ZNB-1981-36b-0055 
 Volume    36 
12Author    A. N. Garg, P. N. ShuklaRequires cookie*
 Title    Mössbauer Spectroscopic Studies of Monosubstituted Pentacyano Ferrate(II) Complexes, Na3 [Fe(CN)5RNH2] * nH20  
 Abstract    A series of compounds Na3[Fe(CN)5RNH2] * nH20 where R = -H, -CH3, -C2H5, n-C3H7, n-C4H9 and -CH2C6H5 and RNH2 = C5H5N have been studied by Mössbauer spectroscopy. Quadrupole splitting (A EQ) values vary in a limited range (0.68-0.80 mm/sec) indicating only small distortions in the octahedral geometry of the compounds with the substitution of various amino groups. Isomer shift (6) values remain almost constant suggesting that s-electron density is not affected by substitution. 
  Reference    (Z. Naturforsch. 36b, 59—61 [1981]; received September 19 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0059.pdf 
 Identifier    ZNB-1981-36b-0059 
 Volume    36 
13Author    W. Preetz, H. SchulzRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung von Tetrakis (chlor o -iodo ) oxalato -osmaten (IV )  
 Abstract    On treatment of [OsLjox] 2-with Cl~ the mixed complexes [OsClnI4_nox] 2 -, n = 1, 2, 3, are formed. The isolation and complete separation of the differently coloured geometric isomers is achieved by ion exchange chromatography on diethylaminoethyl cellulose. The IR and Ra spectra are assigned according to point groups Czv, Cs, Ci. The mutual influence of ligands, especially by the high trans effect of I, is indicated by shifts of the distinct vibrational and electronic bands. The observed splittings of I -> Os transitions are attributed to the different groupings I-Os-I, I-Os-Cl, and I-Os-O, important for the distinction of stereoisomers. The CT-bands as well as the d-d-transitions show batho-chromic shifts with increasing number of I-ligands. Up to five spin-orbit components in the NIR region are well resolved. The assignment is improved by the electronic Ra spectra. The fine structure of some d-d-bands originates from coupling with symmetric vibrational modes. 
  Reference    (Z. Naturforsch. 36b, 62—69 [1981]; eingegangen am 10. Oktober 1980) 
  Published    1981 
  Keywords    Tetrakis(chloro-iodo)oxalato-osmates(IV), UV-VIS-NIR Spectra, IR Spectra, Raman Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0062.pdf 
 Identifier    ZNB-1981-36b-0062 
 Volume    36 
14Author    Udo Praeckel, Friedo HuberRequires cookie*
 Title    Darstellung und Charakterisierung von Monoorganobismut(III)-und Bismut(III)-Derivaten von Mercaptocarbonsäuren Preparation and Characterization of Monoorganobismuth(III) and Bismuth (III) Derivatives of Mercaptocarbonic Acids  
 Abstract    Acidolysis, Triorganobismuthan, Bismuth(III) -mercaptocarboxylates, Monoorganobismuth(III)-mercaptocarboxylates. Cleavage of Bi-C-bonds in PhßBi (Ph = CßHs) by mercaptocarboxylic acids (H2Mc) depends on solvents and concentration. PhaBi in CHCI3 and H2MC (= mercaptoacetic, 3-and 2-mercaptopropionic, 2-mercaptobenzoic acid) reacted to give Bi(Mc)(HMc); in acetone at lower concentrations PhBi(Mc) (H2Mc — 2-mercaptopropionic, 2-mercapto-benzoic acid) was obtained. MesBi (Me = CH3) and H2Mc gave MeBi(Mc) at all concentra-tions used. Polymeric structures with bridging Mc-groups and four-coordinated Bi are proposed. 
  Reference    (Z. Naturforsch. 36b, 70—73 [1981]; eingegangen am 20. Oktober 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0070.pdf 
 Identifier    ZNB-1981-36b-0070 
 Volume    36 
15Author    Jörn Müller, Frerk LüdemannRequires cookie*
 Title    Stoßaktivierungs-Massenspektren von C6H6M + -und C7H7M + - Fragment-Ionen aus Übergangsmetall-^-Komplexen Collisional Activation Mass Spectra of C6H6M+ and C7H7M+ Fragment Ions from Transition Metal ^-Complexes  
 Abstract    Comparative structure investigations of simple gaseous ions formed by electron impact of organometallic -complexes have been carried out by use of the collisional activation (CA) technique. The CA mass spectra of C6H6M+ ions (M — V, Cr, Fe) arising either from benzene or from methylcyclopentadienyl metal compounds show significant differences indicating different structures of these fragments. Similar observations were made with C7H7M+ ions produced from benzyl or cycloheptatrienyl chromium tricarbonyl derivatives, although the metal-free ligand ions exhibit identical CA mass spectra. The CeHßV 1 -ion arising from C5HsVC7H7 by a rearrangement fragmentation was shown to have the ^-benzene vanadium structure. 
  Reference    (Z. Naturforsch. 36b, 74—77 [1981]; eingegangen am 21. Oktober 1980) 
  Published    1981 
  Keywords    Collisional Activation, Gas Phase Ion Structure Analysis, ^-Complexes 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0074.pdf 
 Identifier    ZNB-1981-36b-0074 
 Volume    36 
16Author    Reinhard Hemmer, HansAlbert Brune, Ulf ThewaltRequires cookie*
 Title    Kristall-und Molekülstruktur des (Tetramethylcyclobutadien)cis-1.2-dicyano-ethen-1.2-dithiolato-nickel(II) Crystal and Molecular Structure of (Tetramethylcyclobutadiene)ciS-l,2-dicyano-ethene-l,2-dithiolato-nickel(II)  
 Abstract    Nickel(II) Complex, (Tetramethylcyclobutadiene)cw-l,2-dicyano-ethene-l,2-dithiolato-nickel(II), Molecular Structure Single crystals of the title compound, A, have been prepared and studied structurally by X-ray analysis. A crvstallizes in the space group P 2i/n with Z = 4 and lattice parameters a = 11.174(3), b= 15.627(5), c= 8.148(3) A and ß = 92.82(3)°. Within the limits of error the -bonded cyclobutadiene ring is a square with an average C-C-bond distance of 1.465 A; the methyl groups are displaced away from the nickel atom, the average distance between the ring plane and the methyl C-atoms being 0.15 A. The sulfur containing five membered ring has a cyclic delocalized electron distribution. 
  Reference    (Z. Naturforsch. 36b, 78—82 [1981]; eingegangen am 17. September 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0078.pdf 
 Identifier    ZNB-1981-36b-0078 
 Volume    36 
17Author    D. Layek, G. C. PapavassiliouRequires cookie*
 Title    Some New 1-D Compounds with Metal-Halide Chain  
 Abstract    Some new mixed valence compounds of the type [M(L-L)2M(L-L)2X2]Y4 (where M = Pt or Pd, L-L = 2NH3 or ethylenediamine, X = Cl, Br or I and Y = HS04, 1/2 S04, C104 or 1/2 PtCU) have been synthesized. The polarized Raman spectra of single crystals show the anisotropic character and the presence of ---M(H)---X-M(IV)-X chains. The method of preparation and the chemical behaviour correspond to the mechanism of the formation of Magnus green salt oxidized product. 
  Reference    (Z. Naturforsch. 36b, 83—86 [1981]; received July 28 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0083.pdf 
 Identifier    ZNB-1981-36b-0083 
 Volume    36 
18Author    ThF. Zafiropoulos, S. P. Perlepes, P. V. Ioannou, J. M. Tsangaris, A. G. GalinosRequires cookie*
 Title    Non Deprotonated Metal Complexes of the Bis-amide Tetradentate Ligand N,N' -(Dipicolyl) -1,8-naphthylenediamine  
 Abstract    Complexes of the general formula M(LH2)Cl2 • 2 H2O, where LH2 = N,N'-(dipicolyl)-1,8-naphthylenediamine and M = Mn, Ni and Cu, have been prepared. None of the metal ions used promote amide deprotonation on coordination: LH2 acts as a tetradentate ligand. Distorted octahedral stereochemistries for the complexes in the solid state have been proposed utilising microanalyses, magnetic susceptibilities, molar conductance measure-ments and IR and visible spectral data. The Ni(II) complex exhibits evidence of a poly-meric structure. 
  Reference    (Z. Naturforsch. 36b, 87 [1981]; received July 14 1980) 
  Published    1981 
  Keywords    N, N'-(Dipicolyl)-l, 8-naphthylenediamine, Bis-amide Tetradentate Ligand, Secondary Acid Amide Groups, Non-Deprotonated Complexes, IR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0087.pdf 
 Identifier    ZNB-1981-36b-0087 
 Volume    36 
19Author    Helmut Burdorf, Christoph EischenbroichRequires cookie*
 Title    Metall-rr-Komplexe yon Benzolderivaten, XIII [1] Bis(methylthio-/-beiizol)chrom(0) Darstellung und Einsatz als zweizähniger Chelatligand  
 Abstract    The thioanisole-7r-complexes (methylthio-^-benzene)-(^-benzene)-chromium (2) and bis(methylthio-r/-benzene)chromium (3) have been prepared via lithiation of bis(rj-benzene)-chromium and consecutive reaction with dimethyldisulfide. *H NMR and 13 C NMR spectra of 2 and 3 as well as ESR-spectra of the corresponding radical cations 2t and 3t were recorded and analyzed. In contrast to C(»?.arene)-Si and C(r/-arene)-P bonds, C(1/.arene)-S bonds are stable to solvolysis. With (norbornadiene)tetracarbonylmolybdenum, 3 readily forms [bis(methylthio-?j-benzene)chromium]tetracarbonylmolybdenum (6) wherein 3 functions as a chelating ligand. *H and 13 C NMR evidence suggests, that at room temperature 6 undergoes rapid conformational interconversions. 
  Reference    (Z. Naturforsch. 36b, 94—101 [1981]; eingegangen am 9. September 1980) 
  Published    1981 
  Keywords    Thioanisole Sandwich Complexes, X H NMR Spectra, 13 C NMR Spectra, ESR Spectra, Coordination Chemistry 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0094.pdf 
 Identifier    ZNB-1981-36b-0094 
 Volume    36 
20Author    K. K. Chacko, W. SaengerRequires cookie*
 Title    The Crystal and Molecular Structure of 2-{8-(2-Aminophenoxy)-3,6-dioxaoctyloxy}benzoic Acid * NaC104, a Linear Polyether with Terminal Amino and Carboxyl Functions' 4  
 Abstract    Polyether, Zwitterion, X-ray, 2-{8-(2-Amino phenoxy)-3,6-dioxaoctyloxy}benzoic acid • NaC104 The title compound, C19H23NO6 • NaC104, crystallizes in the monoclinic space group P2i/c with cell dimensions a = 16.374(5), 6 = 9.856(4), c = 27.245(8) A, 0 = 91.88(5)° and Z = 8. The structure of this polyether complex was solved on the basis of 4501 diffracto-meter measured reflections and refined to an Rw of 0.091. There are two molecules per asymmetric unit which are related to each other by an approximate non-crystallographic centre of symmetry. Both complex molecules exist in the favourable zwitterion configura-tion with ion pair attraction between the amino (NH3+) and carboxyl(COO _) end groups of the polyether ligand. The Na+ion is circulary coordinated to all except the oxygen atoms of the aminophenoxy end group of the polyether ligand suggesting that this oxygen has reduced electronegativity. All C-C and C-0 bonds of the ligand exist in favourable gauche and trans conformations. 
  Reference    (Z. Naturforsch. 36b, 102—107 [1981]; received October 20 1980) 
  Published    1981 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0102.pdf 
 Identifier    ZNB-1981-36b-0102 
 Volume    36 
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