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  • preparation  (14)
  • Bischler-Napieralski reaction  (3)
  • Fullerenes  (2)
  • Iod  (2)
  • magnetic properties  (2)
Collection
Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    A Novel Approach to the Synthesis of Endohedral Fullerenes as Demonstrated by Endohedral Barium Fullerenes (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1761-1764 
    Details
    ISSN: 0009-2940
    Keywords: Endohedral ; Barium ; Fullerenes ; Dibarium fullerenes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new route to endohedral fullerenes involving the evaporation of carbon and a metal at different positions, i.e. at different temperatures, in a radio-frequency furnace is described. For the first time, endohedral barium fullerenes within the composition range Ba@C74 to Ba@C136 have been produced in high yields as compared to hollow fullerenes, and have been extracted with CS2. Ba@C60, and Ba@C70, are only soluble in CS2 following sublimation. Furthermore, the first nonlanthanoid dimetallo fullerenes ranging in composition from Ba2@C88 to Ba2@C116 have been obtained. All endohedral barium fullerenes were characterized by mass spectrometry. Properties such as sublimation behaviour, solubility, and sensitivity to air have been studied.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301209
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  • 2
    Electronic Resource
    Electronic Resource
    Synthese und Konformation von Hexahydro-isochino[1,2-b][3]benzazepinen (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 447-457 
    Details
    ISSN: 0947-3440
    Keywords: Isoquino[1,2-b][3]benzazepines ; Iso-C-homoberbines ; Conformation analysis ; Bischler-Napieralski reaction ; Methyl ∊-hydroxycarboxylates ; Heterocycles ; Alkaloids ; Drug research ; Medicinal chemistry ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Conformation of Hexahydro-isoquino[1.2.-b][3]benzazepinesThe synthesis of the six hexahydro-isoquino[1,2-b][3]benzazepines 13a-f is described; their conformation is investigated by NMR spectroscopic methods, X-ray analysis and dehydrogenation with mercury(II) acetate.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719970225
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  • 3
    Electronic Resource
    Electronic Resource
    Synthese und Konformation von Hexahydro-isochino[3,2-a][2]benzazepinen des B-Homoberbin-TypsHerrn Prof. Dr. Felix Zymalkowski aus Anlaß seines 40. Dozentenjubiläums gewidmet. (1995)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1995 (1995), S. 567-574 
    Details
    ISSN: 0947-3440
    Keywords: Isoquino[3,2-a][2]benzazepines ; B-Homoberbines ; Bischler-Napieralski reaction ; Calculations, MMX force-field ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Conformation of Hexahydro-isoquino[3,2-a][2]benzazepines of the B-Homoberbine TypeThe two-step synthesis of the hexahydro-isoquino[3,2-a][2]-benzazepines („B-homoberbines“) 4b-e is described. The main and some further products of the Bischler-Napieralski reaction of hydroxyamide 3c were isolated and identified. The conformation of the B-homoberbines was investigated by X-ray analysis, spectroscopic methods and dehydrogenation with mercury(II) acetate.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199519950377
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  • 4
    Electronic Resource
    Electronic Resource
    Kristallstrukturanalyse der Metaperiodsäure, HIO4, mit kombinierter Röntgen- und NeutronenbeugungProfessor Dieter Seebach zum 60. Geburtstag gewidmetDie Arbeit wurde von der Deutschen Forschungsgemeinschaft. dem Bundesministerium für Bildung und Forschung (PN 40469) und dem Fonds der Chemischen Industrie gefördert. Wir danken Dr. Wolfgang Schäfer, Forschungszentrum Jülich, für die Messung des Neutronenpulverdiffraktogramms. (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 109 (1997), S. 1842-1843 
    Details
    ISSN: 0044-8249
    Keywords: Iod ; Metaperiodsäure ; Neutronenbeugung ; Strukturaufklärung ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19971091632
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  • 5
    Electronic Resource
    Electronic Resource
    Konstitution des Iodyl-KationsDiese Arbeit wurde vom Fonds der Chemischen Industrie gefördert. (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 109 (1997), S. 255-256 
    Details
    ISSN: 0044-8249
    Keywords: Iod ; Nichtmetallchemie ; Sauerstoff ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19971090314
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  • 6
    Electronic Resource
    Electronic Resource
    Verbesserte Darstellung, Kristallzüchtung und Strukturanalyse von P4O6S2 und P4O6S3Professor Hartmut Bärninghausen zum 60. Geburtstage gewidmet (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 281-286 
    Details
    ISSN: 0044-2313
    Keywords: Tetraphosphorus hexaoxide disulfide and trisulfide ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Improved Syntheses, Crystal Growth, and Crystal Structure Determination of P4O6S2 and P4O6S3Syntheses and single crystal growths of the title compounds are described. Both compounds crystallize in the space group P21/c (P4O6S2: a = 11.293(4); b = 6.457(3); c = 11.588(4) Å; β = 90.29(2)°, 2 450 diffractometer data, Rw = 0.035/P4O6S3: a = 15.611(5); b = 8,303(3); c = 9.697(4) Å; β = 127.12(2)°, 2 481 diffractometer data, Rw = 0.034). The structural data for the series P4O6Sn (n = 1 - 4) thus completed are compared to their oxide analogues P4O6On (n = 1 - 4). The changes in the geometry of the P4O6-cage in course of its successive oxidation are discussed.
    Notes: Darstellung und Einkristallzucht der Titelverbindungen werden beschrieben. Beide Verbindungen kristallisieren in der Raumgruppe P21/c (P4O6S2: a = 11,293(4); b = 6,457(3); c = 11,588(4) Å; β = 90,29(2)°, 2 450 Diffraktometerdaten, Rw = 0,035/P4O6S3: a = 15,611(5); b = 8,303(3); c = 9.697(4) Å; β = 127,12(2)°, 2 481 Diffraktometerdaten, Rw = 0,034). Durch die neu gelösten Strukturen werden die Daten für das System P4O6Sn (n = 1 - 4) komplettiert und können mit denen der analog aufgebauten Oxide P4O6On (n = 1 - 4) verglichen werden. Die Veränderungen der Molekülgeometrie des zentralen P4O6-Käfigs im Zuge der schrittweisen Oxidation werden diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190210
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  • 7
    Electronic Resource
    Electronic Resource
    Modifizierte Darstellung und Kristallstrukturbestimmung von β-Na2CS3Professor Dietrich Mootz zum 60. Geburtstage gewidmet (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1203-1208 
    Details
    ISSN: 0044-2313
    Keywords: β-Sodium thiocarbonate ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Modified Synthesis and Crystal Structure Determination of β-Na2CS3.β-Na2CS3 has been synthesized via a novel route from Na2S and CS2, and its crystal structure has been determined using single crystal techniques (for crystallographic informations see “Inhaltsübersicht”). Structural relations between Li2CO3 and β-Na2CS3 are discussed. The ionic conductivities are 3 · 10-11S cm-1 and 1.3 · 10-2S cm-1 at 50°C and 250°C, respectively.
    Notes: In der Literatur als β-Na2CS3 beschriebenes Natriumthiocarbonat wurde auf einem neuen Wege aus Na2S und CS2 dargestellt und die Kristallstruktur aufgeklärt (C2/c; a = 1 003,6(1) pm, b = 633,7(1) pm, c = 855,5(1) pm, β = 108,05(1)°, Z = 4,1582 unabhängige Reflexe, R = 0,034). Strukturbeziehungen zu Li2CO3 werden diskutiert. Die Ionenleitfähigkeiten betragen 3 · 10-11S cm-1 und 1,3 · 10-2S cm-1 bei 50°C bzw. 250°C.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190709
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Kenntnis Neuer ternärer Oxide mit anionischem GoldProfessor Hans-Uwe Schuster in memoriam (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 201-206 
    Details
    ISSN: 0044-2313
    Keywords: Ternary oxides ; anionic gold ; Cs3AuO ; Rb3AuO ; K3AuO ; preparation ; single-crystal structure determination ; analysis of molar volumes ; electrical conductivity ; magnetic properties ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ternary Oxides containing Anionic GoldThe preparation and crystal structure of the novel ternary oxides M3AuO (M = Cs, Rb, K) containing anionic gold is reported. Cs3AuO (a = 7.830(1) Å, c = 7.060(1) Å) crystallizes as a hexagonal, Rb3AuO (a = 5.501(1) Å) and K3AuO (a = 5.240(1) Å) as a cubic anti perovskite. Concerning to the ionic description (M+)3Au-O2- in Cs3AuO gold exists as an anion. In Rb3AuO and K3AuO the anionic character of gold decreases respectively. The analysis of bond length and molar volumes gives support to this view, as well as investigations of conductivity and magnetic properties do.
    Notes: Über die Darstellung und Kristallstrukturen der neuen ternären Oxide M3AuO (M = Cs, Rb, K) mit anionischem Gold wird berichtet. Cs3AuO (a = 7,830(1) Å, c = 7,060(1) Å) kristallisiert als hexagonaler, Rb3AuO (a = 5,501(1) Å) und K3AuO (a = 5,240(1) Å) als kubischer anti-Perowskit. Gemäß der Formulierung (M+)3Au-O2- liegt Gold in Cs3AuO als Anion vor. In den Verbindungen der leichteren Alkalimetalle nimmt der anionische Charakter von Gold sukzessiv ab. Die Analyse der Bindungslängen und Molvolumina belegt diese Sichtweise, ebenso die durchgeführten Leitfähigkeitsuntersuchungen und magnetischen Messungen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210207
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  • 9
    Electronic Resource
    Electronic Resource
    Li2H4I2O10, das erste Tetrahydrogendimesoperiodat (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1901-1906 
    Details
    ISSN: 0044-2313
    Keywords: Tetrahydrogen mesoperiodate ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Li2H4I2O10, the First TetrahydrogendimesoperiodateLi2H4I2O10 has been obtained as an intermediate during the dehydration of LiH4IO6 · H2O to LiIO4, for the first time. According to the results of an X-ray structure determination (monoclinic, P21/n, a = 533.98(4), b = 471.85(4), c = 1431.48(10) pm, β = 91.614(7)°, Z = 2, 726 diffractometer data, R = 0.056), Li2H4I2O10 contains the previously unknown tetrahydrogendimesoperiodate ion H4I2O102-, consisting of two edge-shared IO6 octahedra. They are connected with LiO6 octahedra via common edges and vertices. The crystals are non-merohedrally twinned along (100).
    Notes: Li2H4I2O10 wurde als Zwischenstufe während der Entwässerung von LiH4IO6 · H2O zu LiIO4 erstmals erhalten. Nach der Röntgenstrukturanalyse (monoklin, P21/n, a = 533,98(4), b = 471,85(4), c = 1431,48(10) pm, β = 91,614(7)°, Z = 2, 726 unabhängige Reflexe, R = 0,056) liegt das bisher unbekannte Tetrahydrogendimesoperiodatanion H4I2O102- in Form zweier kantenverknüpfter IO6-Oktaeder vor, die ihrerseits mit LiO6-Oktaedern kanten- und eckenverknüpft sind. Die Kristalle sind systematisch verzwillingt. Es handelt sich um monokline Ebenenzwillinge nach (100).
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966221115
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  • 10
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von cis-NatriumhyponitritProfessor Rudolf Hoppe zum 75. Geburtstag gewidmet (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1803-1809 
    Details
    ISSN: 0044-2313
    Keywords: Hyponitrites ; cis-Na2N2O2 ; preparation ; properties ; crystal structure ; vibrational spectra ; 15N-MAS-NMR spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: To the Knowledge of cis-Sodium HyponitriteSurprisingly, cis-sodium hyponitrite can be prepared by reacting gaseous N2O and solid Na2O. For the first time, the structure of a simple salt of cis hyponitrous acid has been determinated unambigously. According to an abinitio structure determination based on powder data, cis-Na2N2O2 crystallizes monoclinic (P21/c, a = 5.107(1); b = 9.211(1); c = 6.159(1) Å; β = 97.91(1)°; Z = 4). Results of spectroscopic investigations (vibrational spectroscopy, 15N-MAS-NMR) agree with the symmetry of the cis-N2O22- anion as it has been proved by the crystal structure. Consider able differences regarding some chemical and physical properties have been observed for samples of cis-Na2N2O2 synthesized via different routes.
    Notes: Durch Gas-Festkörper-Reaktion von N2O und Na2O läßt sich überraschend cis-Natriumhyponitrit darstellen. Auf der Basis der so erhaltenen reinen, gut kristallisierten Präparate gelang erstmals die eindeutige strukturelle Charakterisierung eines einfachen Salzes der cis-Hyposalpetrigen Säure. Gemäß der voraussetzungsfrei anhand von Pulverdaten durchgeführten Strukturbestimmung kristallisiert cis-Na2N2O2 monoklin (P21/c, a = 5,107(1); b = 9,211(1); c = 6,159(1) Å; β = 97,91(1)°; Z = 4). Die Resultate der spektroskopischen Untersuchungen (Schwingungsspektroskopie, 15N-MAS-NMR) stehen im Einklang mit der durch die Kristallstrukturanalyse ermittelten Symmetrie des cis-N2O22--Anions. Präparate von cis-Na2N2O2, die auf verschiedenen Synthesewegen dargestellt wurden, zeigen auffallende Unterschiede in einigen chemischen und physikalischen Eigenschaften.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231124
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