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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of Homobenzoctamine [9,10-Dihydro-9-(1-methylaminomethyl)-9,10-propanoanthracene] and Homomaprotiline [9,10-Dihydro-9-(3-methylaminopropyl)-9,10-propanoanthracene] (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2809-2812 
    Details
    ISSN: 0009-2940
    Keywords: Benzoctamine, homologue ; Maprotiline, homologue ; Antidepressants ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of homobenzoctamine (10) and homomaprotiline (19) is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251229
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and Selected Reactions of t-Butyl 2-Methylene-3-oxoalkanoates (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2475-2480 
    Details
    ISSN: 0009-2940
    Keywords: Ethylenes, 1,1-diactivate ; Michael acceptors ; 1-Oxa-1,3-butadienes ; Hetero Diels-Alder reaction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The title class of 1,1-diactivated ethylenes has been prepared in two steps from aldehydes and t-butyl acrylate by (i) DABCO-catalyzed coupling to give t-butyl 2-(hydroxyalkyl)-2-propenoates 11 and (ii) low-temperature Jones oxidation, followed by swift work up at low temperature. The resulting t-butyl 2-methylene-3-oxoalkanoates 12 are stabilized by sterically demanding and also by aromatic groups R. For primary unhindered alkyl groups, stability is low. The compounds enter into Michael reactions, hetero Diels-Alder additions with enol ethers, and self-dimerization.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241118
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of 9,10-Dihydro-9,10-propanoanthracen-12-ones Substituted at the Bridgehead (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2803-2807 
    Details
    ISSN: 0009-2940
    Keywords: Rings, bridged, seven-membered ; Ketones, α,α'-dibromo ; Ultrasound reactions ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A variety of 9,10-dihydro-9,10-propanoanthracen-12-ones 1-11 has been prepared from anthracenes 15-23, α,α′-dibromo ketones 12-14 and zinc/copper couple by using dioxane as solvent and ultrasonication at 15-20°C. 2,2,4,4-Tetrabromoacetone (12) afforded cycloadducts, in which the two bromine atoms at C-11 and C-13 are introduced stereoselectively cis and adopt a syndiaxial instead of a cis-diequatorial position (5 examples). Even the cis-configurated methyl groups in adducts 8, 9 and cis-11 adopt syndiaxial positions preferentially.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251228
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of 9,10-Dihydro-9,10-propanoanthracene-12-ones from Anthracenes and Oxyallyl Cation Intermediates Generated by the the BSA [N,O-Bis(trimethylsilyl)acetamide] Method (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1755-1760 
    Details
    ISSN: 0009-2940
    Keywords: Anthracenes ; Oxyallyl cations ; Ketones, α,α'-oligobromo- ; Dibenzohomobarrelenes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Sonication of a zinc/copper couple, N,O-bis(trimethylsilyl)-acetamide (BSA) and α,α'-oligobromo ketones in benzene gives rise to oxyallyl intermediates which cycloadd to anthracene. Starting from 1,1,3,3-tetrabromoacetone (2a) and anthracene (1a), we obtained 11,11,13-tribrominated adduct 4 as the major product (42%). The expected 11,13-dibrominated adduct trans-3 was formed as a minor product (5%), but it became the main product when the known oxyallyl methodology was applied. Dibenzohomobarrelenes 9 and 17 were prepared by short routes.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270927
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  • 5
    Electronic Resource
    Electronic Resource
    Ein neuer Perowskit mit Lücken im Anionenteil: Ba4[Na2W2O11]Professor Walter Rüdorff in memoriam (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 575 (1989), S. 154-164 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Perowskite with Deficiencies in the Oxygen Part: Ba4[Na2W2O11]For the first time colourless single crystals of Ba2NaWO5.5 were prepared by reaction of Na4WO5 [2] and „BaO2“ [Ba:Na:W = 4:4:1, Ni-cylinder, 725°C, 35 d]. Single crystal data [432 of 505 I0 (hkl), Four-circle-diffractometer Siemens AED2, MoKα, R = 6.1%, Rw = 5,6%] verify the space group P mmm with a = 579.16(8), b = 580.85(8), c = 859.4(1) pm, Z = 1.The structure is based upon the CaTiO3-type of structure. Ba2+ take the place of Ca2+ meanwhile Ti4+ is substituted alternately by W6+ and Na+. Complete occupation of all lattice positions would lead to a deficite of positive charge. This is compensate by deficiencies in the oxygen part of the lattice. Related to [Na(1)1Na(2)1W(1)1W(2)1O(1)4O(2)2O(3)2O(4)3] these deficiencies are statistically distributed on O(4).Structural relations are deduced by Schlegel-Diagrams. The Madelung Part of Lattice Energie, MAPLE, Effektive Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, are calculated and discussed.
    Notes: Erstmals wurden farblose Einkristalle von Ba4[Na2W2O11] durch Reaktion von Na4WO5 [2] mit „BaO2“ [Ba:Na:W = 4:4:1, Ni-Bömbchen, 725°C, 35 d] dargestellt. Einkristalldaten [432 von 505 I0 (hkl), Vierkreis-Diffraktometer Siemens AED2, MoKα, R = 6,1%, Rw = 5,6%] belegen die Raumgruppe P mmm mit a = 579,16(8), b = 580,85(8), c = 859,4(1) pm, Z = 1.Der Struktur hegt der Perowskit-Typ zugrunde, wobei Ca2+ durch Ba2+ und Ti4+ gesetzmäßig durch W6+ und Na+ ersetzt ist. Das bei vollständiger Besetzung aller Positionen resultierende Defizit positiver Ladung ist durch Lücken im Anionenteil kompensiert. Gemäß [Na(1)1Na(2)1W(1)1W(2)1O(1)4O(2)2O(3)2O(4)3] liegen diese nur bei O(4), statistisch verteilt, vor.Die strukturellen Zusammenhänge werden mit Hilfe von Schlegel-Diagrammen erklärt. Der Madelunganteil der Gitterenergie, MAPLE, sowie Effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, berechnet, werden mitgeteilt und diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895750119
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  • 6
    Electronic Resource
    Electronic Resource
    Zinn(IV)-Mangancarbonyl-Cluster mit offener und geschlossener Metall-Metall-Verknüpfung aus Umsetzungen von SnX2 (X = Halogen) mit Mn2(CO)10 (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 429 (1977), S. 162-172 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Formation of Tin(IV)-Manganesecarbonyl Clusters with Open and Closed Metal-Metal Skeleton by Reaction of SnX2 (X = Halogen) with Mn2(CO)10The oxidative addition of SnX2 (X = Br, I) and Mn2(CO)10 results in the product X2Sn[Mn(CO)5]2, the clusters of this type are final reaction products in a bomb tube. The starting materials SnX2 (X = Cl, Br, I) and Mn2(CO)10 lead in a manifold CO overpressure discharged Schlenk tube mainly to the formation of th new clusters of the type Mn2(CO)8[μ-Sn(X)Mn(CO)5]2 (X = Cl, Br, I). It was possible to prepare Mn2(CO)8[μ-Sn(Br)Mn(CO)5]2 by an application of the Schlenk tube technique with the reaction systems: Br4-nSn[Mn(CO)5]n (n = 1, 2)/Mn2(CO)10 (or BrMn(CO)5)/Xylol and BrSn[Mn(CO)5]3/Xylol. FSn[Mn(CO)5]3 could be prepared with SnF2 and Mn2(CO)10 in a bomb tube.
    Notes: SnX2 (X = Br, J) und Mn2(CO)10 liefern das Additionsprodukt X2Sn[Mn(CO)5]2. Während die Produkte dieses Typs in Bombenrohren Endprodukte sind, entstehen bei den gleichen Umsetzungen in mehrfach vom CO-Überdruck entlasteten Schlenkrohren überwiegend die neuen Cluster des Typs Mn2(CO)8[μ-Sn(X)Mn(CO)5]2 (X = Cl, Br, J). Mn2(CO)8[μ-Sn(Br)Mn(CO)5]2 ließ sich unter Anwendung der Schlenkrohrtechnik aus den Reaktionssystemen Br4-nSn[Mn(CO)5]n (n = 1, 2)/Mn2(CO)10/Xylol (bzw. BrMn(CO)5/Xylol) sowie durch Thermolyse von BrSn[Mn(CO)5]3 in Xylol erhalten. FSn[Mn(CO)5]3 wurde die Umsetzung von SnF2 mit Mn2(CO)10 im Bombenrohr dargestellt.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774290121
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  • 7
    Electronic Resource
    Electronic Resource
    Zwei neue Ordnungs-Varianten des NaCl-Typs: Li4MoO5 und Li4WO5 (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 573 (1989), S. 157-169 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Two New Variants of the NaCl Type of Structure: On Li4MoO5 and Li4WO5For the first time in form of colourless, transparent single crystals of Li4MoO5 [annealed mixtures of Li2O and MoO3, Li:Mo = 4.2:1, Ni-cylinder, 950°C, 28 d] as well as Li4WO5 [annealed mixtures of Li2O and WO3, Li:W = 4.4:1, Au-tube, 950°C, 28 d, slowly cooling] have been prepared. Single crystal data show isotypic oxides of the Li4TeO5-type, a deformed variant of the NaCl-type of structure [Li4MoO5: 1379 IO(hkl), four-circle-diffraktometer Philips PW 1100, ω--2Θ scan, AgKα, R = 8.7% and RW = 8.3%, space group P1 with a = 511.9(1), b = 772.7(2), c = 506.4(1) pm, α = 101.70(1)°, β = 101.48(1)°, γ = 108.58(2)°, Z = 2 and Li4WO5: 1027 IO(hkl), Philips PW 1100, ω-2Θ scan, MoKα, R = 4.0% und RW = 3.7%, space group P1 with a = 510.94(5), b = 771.59(7), c = 506.09(4) pm, α = 101.804(8)°, β = 101.78(1)°, γ = 108.770(9)°, Z = 2]. The structural relations are deduced from Schlegel Diagrams. The Madelung Part of Lattice Energie, MAPLE, and Effective Coordination Numbers, ECON, these via Mean Fictive Ionic Radii, MEFIR, are calculated and discussed.
    Notes: Erstmals wurde in Form farbloser, transparenter Einkristalle Li4MoO5 [aus Gemengen von Li2O und MoO3. Li:Mo = 4,2:1, Ni-Bömbchen, 950°C, 28 d] sowie Li4WO5 [aus Gemengen von Li2O und WO3, Li:W = 4,4:1, Au-Rohr, 900°C, 30 d] dargestellt. Nach Einkristalldaten liegt bei den isotypen Oxiden vom Li4TeO5-Typ eine Ordnungsvariante des NaCl-Typs [Li4MoO5: 1379 IO(hkl), Vierkreisdiffraktometer Philips PW 1100, ω-2Θ scan, AgKα, R = 8,7% und RW = 8,3%, Raumgruppe P1 mit a = 511,9(1), b = 772,7(2), c = 506,4(1) pm, α = 101,70(1)°, β = 101,48(1)°, γ = 108,58(2)°, Z = 2 bzw. Li4WO5: 1027 IO(hkl), Philips PW 1100, ω-2Θ scan, MoKα, R = 4,0% und RW = 3,7%, Raumgruppe P1 mit a = 510,94(5), b = 771,59(7), c = 506,09(4) pm, α = 101,804(8)°, β = 101,78(1)°, γ = 108,770(9)°, Z = 2] vor.Die strukturellen Zusammenhänge werden aus den Schlegel-Diagrammen abgeleitet. Der Madelunganteil der Gitterenergie, MAPLE, sowie Effektive Koordinationszahlen, ECON, diese über Mittlere Fiktive Ionenradien, MEFIR, berechnet, werden mitgeteilt und diskutiert.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895730116
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  • 8
    Electronic Resource
    Electronic Resource
    Ein Oxowolframat mit „Kanalstruktur“: KNa3WO5 (Mit einer Bemerkung über den Aufbau von Na4WO5) (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 573 (1989), S. 143-156 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An Oxotungstate with „Channel Structure“: KNa3WO5 (With a Remark on Na4WO5)For the first time single crystals of Na4WO5 were prepared by heating of annealing mixtures of Na2WO4 [2] and Na2O [Na:W = 4,2:1, Ni-cylinder, 725°C, 28 d]. Four-circle-diffraktometer data [PW 1100, 1900 IO(hkl), ω-2Θ scan, AgKα-radiation, R = 6,5%, RW = 5,7%] determine the triclinic structure of Na4WO5 with a = 569.4(2), b = 847.7(2), c = 565.7(1) pm, α = 101.29(2)°, β = 102.25(3)°, γ = 109.20(3)°. It is isotypic with the NaCl-type of structure Li4WO5. By heating Na4WO5 with K2O [Na:K:W = 4:3:1, Au-tube, 750°C, 35 d] colourless single crystals of KNa3WO5 were obtained for the first time. The structure determination [four-circle-diffraktometer data, PW 1100, ω-2Θ scan, 943 IO(hkl), MoKα-Strahlung R = 4.9%, RW = 3.9%] proves space group C2/m with a = 907.8(3), b = 753.9(2), c = 911.8(3) pm, β = 104.07(4)°, Z = 4. The structure is characterised by undulating layers of Na, W and O and two different kinds of channels.The Madelung Part of Lattice Energie, MAPLE, Effective Coordination Numbers, ECON, these via Mean Fictive Ionic Radii, MEFIR, are calculated and discussed.
    Notes: Neu dargestellt wurden farblose Einkristalle von Na4WO5 durch Tempern inniger Gemenge von Na2WO4 [2] und Na2O [Na:W = 4,2:1, Ni-Bömbchen, 725°C, 28 d]. Nach Vierkreisdiffraktometerdaten [PW 1100, 1900 IO(hkl), ω-2Θ-scan, AgKα-Strahlung, R = 6,5%, RW = 5,7%] kristallisiert Na4WO5 triklin mit a = 569,4(2), b = 847,7(2), c = 565,7(1) pm, 101,29(2)°, β = 102,25(3)°, γ = 109,20(3)°, Z = 2. Es ist isotyp mit der Kochsalzvarianten Li4WO5.Durch Erhitzen von Na4WO5 im Gemenge mit K2O [Na:K:W = 4:3:1, Au-Rohr, 750°C, 35 d] wurden erstmals farblose Einkristalle von KNa3WO5 erhalten. Die Strukturaufklärung [Vierkreisdiffraktometerdaten, PW 1100, ω-2Θ-scan, 943 IO(hkl), MoKα-Strahlung R = 4,9%, RW = 3,9%] belegt die Raumgruppe C2/m mit a = 907,8(3), b = 753,9(2), c = 911,8(3) pm, β = 104,07 (4)°, Z = 4. Der Aufbau ist durch gewellte Schichten aus Na, W und O und zwei verschiedene Sorten von Kanälen charakterisiert.Der Madelunganteil der Gitterenergie, MAPLE, Effektive Koordinationszahlen, ECON, diese über Mittlere Fiktive Ionenradien, werden berechnet und diskutiert.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895730115
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  • 9
    Electronic Resource
    Electronic Resource
    Neutronenbeugung an Li2CuO2Professor Kurt Issleib zum 70. Geburtstage am 19. November 1989 gewidmet (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 578 (1989), S. 18-26 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neutron Diffraction on Li2CuO2Li2CuO2 was investigated by neutron powder diffraction at 300 K and 4.2 K (diffractometer SV7 at FRJ-2 in KFA Jülich, λ = 109 pm).The crystallographic orthorhombique space group Immm determined previously by x-ray diffraction on single crystals was confirmed. Lattice parameters and atomic positional parameters were refined: a = 366.14(8), b = 286.14(6), c = 939.4(2) pm; z(Li) = 0.7122(17), z(O) = 0.6411(7).Li2CuO2 orders antiferromagnetically below 10 K with an antiparallel coupling of the magnetic moments of Cu2+ in (0, 0, 0) and (1/2, 1/2, 1/2). The moments are orientated perpendicular to the c-axis. The ordered magnetic moment is μ = 0.9(1) μB per Cu2+ at 4.2 K. The magnetic Bravais-Lattice is PI, the magnetic space group is PImmm with similar parameters.
    Notes: Li2CuO2 wurde mit Neutronenpulverdiffraktometrie bei 300 K und 4,2 K untersucht (Diffraktometer SV7 am FRJ-2 in KFA Jülich, λ = 109 pm).Die aus Röntgen-Einkristalldaten bestimmte orthorhombische Raumgruppe Immm wurde bestätigt, Gitterkonstanten und Atompositionsparameter wurden verfeinert: a = 366,14(8), b = 286,14(6), c = 939,4(2) pm; z(Li) = 0,7122(17), z(O) = 0,6411(7).Unterhalb von 10K ordnet Li2CuO2 antiferromagnetisch mit einer antiparallelen Einstellung der magnetischen Momente von Cu2+ in (0, 0, 0) und (1/2, 1/2, 1/2). Die Momentorientierung ist senkrecht zur c-Achse. Das geordnete magnetische Moment beträgt μ = 0,9(1) μB pro Cu2+ bei 4,2 K. Das magnetische Bravais-Gitter ist PI, die magnetische Raumgruppe bei gleichen Gitterkonstanten PImmm.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895780103
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  • 10
    Electronic Resource
    Electronic Resource
    Ueber Ultramarin-Krystalle (1876)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 9 (1876), S. 864-868 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.187600901259
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