| 121 | Author
| Peter Paetzold, Günther Schimmel | Requires cookie* | | Title
| ungesättigter Stickstoffbasen Boration Reactions with the N-Oxides and m-Imines of Unsaturated Nitrogen Bases  | | | Abstract
| -Dipolar reagents with an unsaturated CNO-or CNN-skeleton undergo 1,3-organo-boration by triorganoboranes. On the other hand, the unsaturated NNO-skeletons in azoxybenzene or nitrous-oxide are reduced to the corresponding NN-fragment by trialkyl-boranes. The 1,3-addition of aminoborane Cl2BNMe2 to the aldimineoxide PhHC = NMe-0 represents one of the rare examples of analogous reactivity of BN-and CC-double bonds. O-Borylhydroxylamines PhHCR-NMe-OBR2 are reduced by BR'3 to PhHCR-NMe-BR'2 and R'0-BR2. Similar reduction products are isolated from liquid-phase thermolysis of PhHCEt-NMe-OBEt2 (16), whereas gas-phase thermolysis of 16 gives PhCH = NMe, (EtBO)3, and C4HI0. | | |
Reference
| Z. Naturforsch. 35b, 568—577 (1980); eingegangen am 6. Dezember 1979 | | |
Published
| 1980 | | |
Keywords
| O-Borylhydroxylamines, Borylhydrazines, 2-Borylhydrazones, Organoboration, Aminoboration 1, 3 | | |
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| default:Reihe_B/35/ZNB-1980-35b-0568.pdf | | | Identifier
| ZNB-1980-35b-0568 | | | Volume
| 35 | |
125 | Author
| Herbert Schumann, Manfred Meissner | Requires cookie* | | Title
| Organometallphosphin-substituierte Übergangsmetallkomplexe, XXVI [1] Diearbonyl-nitrosyl-organometaUphosphin-kobalt-Komplexe Organometalphosphine-Substituted Transition Metal Complexes, XXVI [1] Dicarbonyl Nitrosjd Organometal Phosphine Cobalt Complexes  | | | Abstract
| The reactions of tricarbonyl nitrosyl cobalt with tri-feri-butylphosphine, di(teri-butyl)-trimethylsilyl-, -germyl-, -stannylphosphine, £er£-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 of corresponding dicarbonyl-nitrosyl-organometal phosphine cobalt complexes. The NMR spectra of the products are reported and discussed. | | |
Reference
| Z. Naturforsch. 35b, 594—598 (1980); eingegangen am 5. Dezember 1979 | | |
Published
| 1980 | | |
Keywords
| Organometal Phosphines, Dicarbonyl-nitrosyl Cobalt Complexes, NMR Spectra | | |
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| default:Reihe_B/35/ZNB-1980-35b-0594.pdf | | | Identifier
| ZNB-1980-35b-0594 | | | Volume
| 35 | |
128 | Author
| JohannesC P M Lapidaire, WillemL. Groeneveld | Requires cookie* | | Title
| Dodecamethyl Bisimidotriphosphoramide (TRIPA) A Tridentate Ligand, Part II [1]  | | | Abstract
| In this article we describe the synthesis of TRIPA, dodecamethyl bisimidotriphosphor-amide (C12H36N7O3P3) and of its complexes with various lanthanide-nitrates. Five types of complexes have been isolated according to the compositions, X-ray diffraction patterns and IR spectra. 1. M(N03)3(TRIPA)3(acetone) M = La, Pr, Nd, 2. M(N03)3(TRIPA) M = Y, 3. M(N03)3(TRIPA)2(nitromethane) M = Er, Y, 4. M(N03)3(TRIPA)2(acetone) M = Sm, Gd, Dy, Er, Y (type I), 5. M(N03)3(TRIPA)2(acetone) M = Y (type II). The yttrium complexes, type I and II, are isomeric. IR spectra are given together with the NMR spectra. It is concluded that in all complexes the three TRIPA oxygens are coordinated, except in group 1. The nitrate groups in group 2 to 5 are involved in the coordination, particularly in the type 2 complex, where there are bidentate nitrate groups. There seems to be a difference in the conformation of the TRIPA molecules between the free ligand, the complexes in group 1, in group 2 and in group 3, 4, 5 Hygroscopic TRIPA can be easily confused with a stable mono-hydrate, TRIPA • H20. | | |
Reference
| Z. Naturforsch. 35b, 607—613 (1980); received October 15 1979/January 9 1980 | | |
Published
| 1980 | | |
Keywords
| Complex Formation, Lanthanide-nitrates, Tridentate ligand, Phosphoryl Compound, TRIPA | | |
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| default:Reihe_B/35/ZNB-1980-35b-0607.pdf | | | Identifier
| ZNB-1980-35b-0607 | | | Volume
| 35 | |
129 | Author
| Hans-Friedrich Klein, Joachim Groß, Jean-Marie Bassett, Ulrich Schubert | Requires cookie* | | Title
| Semicobaltate -Alkalimetall-Träger in Kohlenwasserstoffen Darstellung, Eigenschaften und Struktur von K[Co(C2H4)(PMe3)3]2 Semicobaltates -Alkali Metal Carriers in Hydrocarbons Synthesis, Properties, and Structure of K[Co(C2H4)(PMe3)3]2  | | | Abstract
| Semicobaltates (Co-1/2) containing olefin and trimethylphosphane ligands are synthe-sized from Co(olefin)(PMe3)3 and potassium metal. The X-ray crystal structure determina-tion of the title compound shows that the unit cell contains two K atoms in equal ionic contact with the ethylene ligands of four Co(C2H4)(PMe3)3 complex units, two of which are interacting with both K atoms. In solution the semicobaltates exist in hydrocarbon solvents under argon only, while in contrast under ethylene or nitrogen atmospheres or in donor solvents disproportionation occurs to give Co(O) and Co(-I) species. Allgemeines | | |
Reference
| Z. Naturforsch. 35b, 614—619 (1980); eingegangen am 3. Januar 1980 | | |
Published
| 1980 | | |
Keywords
| Potassium-Ethylene Semicobaltate, Synthesis, Molecular Structure, Crystal Structure | | |
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| default:Reihe_B/35/ZNB-1980-35b-0614.pdf | | | Identifier
| ZNB-1980-35b-0614 | | | Volume
| 35 | |
132 | Author
| Fritz Seel, Rudi Lehnert, Eckhard Bill, Alfred Trautwein | Requires cookie* | | Title
| Produkte der Umsetzung des Pentacarbonyleisens mit N-substituierten Imidazolen Products of the Reaction of Pentacarbonyl Iron with N-Substituted Imidazoles  | | | Abstract
| 1-Methyl-, 1-ethyl-, 1,2-dimethyl-and 1,2,3,4-tetramethylimidazole react with penta-carbonyliron to yield [FeIm6][Fe(CO)8] (1), [FeIm6][Fe(CO)4]2 (2), [FeIm4][Fe(CO)4] (3) and Fe(Im)(CO)2 (4) (Im = substituted imidazole). The crystal and molecular structures of 1 and 2 have been determined by X-ray diffraction. For 1 and 2 agreement between calculated and measured Mössbauer absorption intensities was obtained by taking into account Debye-Waller-factors, which were derived from the X-ray diffraction experiments. | | |
Reference
| Z. Naturforsch. 35b, 631—638 (1980); eingegangen am 18. Dezember 1979 | | |
Published
| 1980 | | |
Keywords
| Imidazole Derivatives, Pentacarbonyl Iron, Crystal Structure, Molecular Structure, Mößbauer Spectra | | |
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| default:Reihe_B/35/ZNB-1980-35b-0631.pdf | | | Identifier
| ZNB-1980-35b-0631 | | | Volume
| 35 | |
134 | Author
| KlausG. Heumann, Klaus Baier, Gerald Wibmer | Requires cookie* | | Title
| Chlor-Isotopenseparation an einem wasserhaltigen Zirkondioxidaustauscher Chlorine Isotope Separation Using an Hydrous Zirconium Dioxide Exchanger  | | | Abstract
| zirconium dioxide is used in column experiments for separating the halide ions as well as for isotope fractionation of chlorine. The preparation of the zirconium dioxide particles is carried out by homogeneous hydrolysis of a zirconyl chloride solution using hexamethylenetetramine. The separation order of the halides is I -, Br -and Cl -in contrast to the inverse separation order using a strongly basic anion exchange resin. In chlorine isotope separation experiments an enrichment of 35 C1~ is found in the first fractions, whereas the last fractions show a significant enrichment of 37 C1~. This also indicates an inversion of the isotope separation compared with a strongly basic anion exchange resin. A dependence of the isotope fractionation on the concentration of the NaNC>3 solution used as eluant is found. With increasing concentration the isotope fractionation decreases. Using a 0.5 M NaN03 solution the elementary separation effect was calculated e = 6,1 • 10~ 4 . This is one of the highest isotope fractionations known in a chloride isotope exchange system. The results show that the electrolyte behaviour of isotopes is comparable to that of a series of homologous elements. | | |
Reference
| Z. Naturforsch. 35b, 642—647 (1980); eingegangen am 11. Januar 1980 | | |
Published
| 1980 | | |
Keywords
| Isotope Separation, Chlorine, Zirconium Dioxide, Column Experiments, Halide Separation Hydrous | | |
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| default:Reihe_B/35/ZNB-1980-35b-0642.pdf | | | Identifier
| ZNB-1980-35b-0642 | | | Volume
| 35 | |
135 | Author
| Walter Strohmeier, Manfred Michel, Luise Weigelt | Requires cookie* | | Title
| mit homogenen Ir-und Ru-Katalysatoren Selective Bulk-Hydrogenation of a,ß Unsaturated Ketones to Ketones with Homogeneous Ir and Ru Catalysts  | | | Abstract
| a,ß Unsaturated ketones are selectively hydrogenated to ketones in homogeneous bulk-catalysis under mild conditions by iridium-and ruthenium complexes. The range of mean turnover is from 6 to 196 depending on substrate, catalyst and reaction conditions. Selectivity ketone/alcohol depends on the degree of conversion and exceeds 100 on con-version of 90%. Einleitende Bemerkungen | | |
Reference
| Z. Naturforsch. 35b, 648—650 (1980); eingegangen am 7. Dezember 1979 | | |
Published
| 1980 | | |
Keywords
| Catalysis, Homogeneous, Selective, Hydrogenation, Unsaturated Ketones | | |
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| default:Reihe_B/35/ZNB-1980-35b-0648.pdf | | | Identifier
| ZNB-1980-35b-0648 | | | Volume
| 35 | |
136 | Author
| HansJoachim Berthold, Wolfgang Ludwig | Requires cookie* | | Title
| Präparative und röntgenographische Untersuchungen über Cäsium-Silber-Gold(III)-Chlorid Preparation and X-ray Investigations of Cesium Silver Gold(III) Chloride  | | | Abstract
| Cesium silver gold(III) chloride has been prepared from hydrochloric acid solutions. The composition of the preparations is variable and depends on the ratio [Au(III)]/[Ag(I)] in solution. It corresponds to the formula Cs2Agi_aAui+a;/3Cl6. In the range 0 < x < 0,64 six crystallographically different phases have been observed. Above x — 0,42 a cubic phase is obtained. The stoichiometric compound Cs2AgAuCl6 is obtained only from solutions with [Au(III)]/[Ag(I)] < 1. Reports in the literature which claim the stoichiometric compound Cs2AgAuCl6 to exist in a cubic and in a tetragonal form cannot be confirmed. Cs2AgAuCl6 crystallizes ortho-rhombically with the lattice constants a = 15,21 A, b= 15,16 A and c= 10,32 A (Z = 8). | | |
Reference
| Z. Naturforsch. 35b, 651—656 (1980); eingegangen am 7. Februar 1980 | | |
Published
| 1980 | | |
Keywords
| Cesium Silver Gold(III) Chloride, Preparation, Chemical Composition, Nonstoichiometric Phases, Lattice Constants | | |
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| default:Reihe_B/35/ZNB-1980-35b-0651.pdf | | | Identifier
| ZNB-1980-35b-0651 | | | Volume
| 35 | |
137 | Author
| Oskar Glemser, Eckehard Kindler, Bernt Krebs, Rüdiger Mews, Frank-Michael Schnepel, Joachim Wegener | Requires cookie* | | Title
| Über das Bis(chlor8chwefel)stick8loff-Kation N(SC1)2 + On the Bis(chlorosulfur)nitrogen Cation N(SC1)2 +  | | | Abstract
| The synthesis of N(SC1)2+ MF6~ (M = As, Sb) is reported, the structure of N(SC1)2+ AlCLr is determined and some of the spectroscopic properties of the N(SC1)2 + cation are discussed. Das Bis(chlorschwefel)Stickstoff-Kation wurde erstmals aus NSF3 und BCI3 dargestellt [1]: | | |
Reference
| Z. Naturforsch. 35b, 657—660 (1980); eingegangen am 15. Februar 1980 | | |
Published
| 1980 | | |
Keywords
| Bis(chlorosulfur)nitrogen Hexafluoroarsenate, Hexafluoroantimonate, Tetrachloroaluminate, Vibrational Spectra | | |
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| default:Reihe_B/35/ZNB-1980-35b-0657.pdf | | | Identifier
| ZNB-1980-35b-0657 | | | Volume
| 35 | |
138 | Author
| Helmut Behrens, Jochen Ellermann, EwaldF. Hohenberger | Requires cookie* | | Title
| Dicarbonyl-, Carbamoyl-carbonyl-und Carbomethoxo-carbonyl-Komplexe des Rhodiums mit tri-und tetratertiären Phosphinliganden [1] Dicarbonyl-, Carbamoyl-carbonyl-and Carbomethoxo-carbonyl Complexes of Rhodium with Tri-and Tetratertiary Phosphine Ligands [1]  | | | Abstract
| The cationic dicarbonyl complexes [Rh(CO)2(R2PCH2)3CR']PF6 (R = C6H5; R' = CH3, -CH2PR2), formed by high pressure synthesis from RhCl3(H20)3, CO and (R2PCH2)3CR' react with liquid ammonia at 20 °C to give the carbamoyl complexes Rh(CO)(CONH2)(R2PCH2)3CR'. At 100 °C in liquid ammonia the carbamoyl-carbonyl complexes Rh(CO)(CONH2)(R2PCH2)3CR' form the CO-bridged, dinuclear compounds (^-CO)2[Rh(R2PCH2)3CR']2. Upon treatment of Rh(CO)(CONH2)(R2PCH2)3CR' with CH3OH the carbomethoxo carbonyl complexes Rh(CO)(COOCH3)(R2PCH2)3CR' are obtained. The new compounds were characterised, as far as possible, by their IR, Raman and 31 P NMR spectra. | | |
Reference
| Z. Naturforsch. 35b, 661—668 (1980); eingegangen am 10. Dezember 1979/30. Januar 1980 | | |
Published
| 1980 | | |
Keywords
| Rhodium Complexes, Polytertiary Phosphines, IR Spectra, Raman Spectra, 31 P NMR Spectra | | |
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| default:Reihe_B/35/ZNB-1980-35b-0661.pdf | | | Identifier
| ZNB-1980-35b-0661 | | | Volume
| 35 | |
139 | Author
| D. Chales De Beaulieu, Hk Müller-Buschbaum | Requires cookie* | | Title
| Gemischtvalente Oxovanadate, I Ein neuer Strukturtyp für die Verbindung BaV10O15 Oxovanadates with Mixed Valence, I A New Crystal Structure of BaVioOis  | | | Abstract
| BaVioOis was prepared by high temperature reaction of BaO and V2O3 in H2-atmosphere (T > 1800°). X-ray investigations of single crystals show a new structure type with octa-hedral coordination of V 3+ /V 2+ (statistical distribution) and cuboctahedral surrounding of Ba 2+ . Orthorhombic symmetry, space group D^|-Ccmb, a = 995,8; b = 1161,8; c = 941,0; Z = 4. | | |
Reference
| Z. Naturforsch. 35b, 669—671 (1980); eingegangen am 5. Februar 1980 | | |
Published
| 1980 | | |
Keywords
| Barium, Vanadium, Oxide, Mixed Valence State, Crystal Structure | | |
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| default:Reihe_B/35/ZNB-1980-35b-0669.pdf | | | Identifier
| ZNB-1980-35b-0669 | | | Volume
| 35 | |
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