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  • 1
    Electronic Resource
    Electronic Resource
    Properties of dichlorine hexaoxide in the gas phase and in low-temperature matrixes (1988)
    s.l. : American Chemical Society
    Inorganic chemistry 27 (1988), S. 1703-1706 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00283a009
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  • 2
    Electronic Resource
    Electronic Resource
    Kristallstruktur und thermisches Verhalten von Tetrakaliumcyclo-tetraphosphat(V)-Dihydrat, (KPO3)4·2H2O (1985)
    Springer
    Monatshefte für Chemie 116 (1985), S. 203-210 
    Details
    ISSN: 1434-4475
    Keywords: Potassium-cyclo-tetraphosphate(V)-dihydrate ; Crystal structure ; Dehydration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The crystal structure of (KPO3)4 · 2H2O was solved by direct methods andFourier-syntheses (triclinic; P $$\bar 1$$ ;a=1 114.9 (2),b=821.9 (2),c=815.7 (3) pm; α=88,88 (2), β=84.51 (2), γ=82.70 (2)°;Z=2; 5910 unique reflections;R=0.052). The cyclic anions exhibit point symmetry S4 with four terminal oxygens in axial and four in equatorial position. Thermal investigations (DTA, TGA, X-Ray-methods) show that the dehydration occurs in two steps. The anhydrous form of (KPO3)4 is stable above 230 °C and undergoes a second order phase transition which is complete at 515±5 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798455
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  • 3
    Electronic Resource
    Electronic Resource
    Cyclopentenone Derivatives, X. An Easy Approach to Bicyclo[6.3.0]undecane Derivatives (1986)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1986 (1986), S. 456-464 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclopentenon-Derivate, X.  -  Ein einfacher Zugang zu Bicyclo[6.3.0]undecan-DerivatenEs wird ein einfacher Weg zu funktionalisierten Bicyclo[6.3.0]undecan-Derivaten beschrieben, die als Zwischenprodukte bei Terpensynthesen genutzt werden können. Die trans-Konfiguration des Acetals 12 wird durch eine Röntgenstrukturanalyse bewiesen.
    Notes: A straightforward route to functionalized bicyclo[6.3.0]undecane derivatives, which can be used in terpene synthesis, is described. The trans configuration of the acetal 12 is established by an X-ray structural analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198619860305
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  • 4
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von Ag2O3Professor Marianne Baudler zum 65. Geburtstage am 27. April 1986 gewidmet (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 535 (1986), S. 39-46 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal Structure of Ag2O3The novel compound Ag2O3 was obtained by anodic oxidation of aqueous solutions of AgBF4, AgClO4, and AgPF6. According to single crystal investigations Ag2O3 belongs to the orthorhombic crystal system (Fdd2; a = 1286.9(1), b = 1049.0(1), c = 366.38(5) pm; Z = 8; 309 independent diffractometer data; R = 1.2%). Ag2O3 is isostructural to Au2O3 and contains silver square-planarly coordinated by oxygen. The AgO4 groups are connected via common vertices forming a 3-d framework.
    Notes: Durch anodische Oxydation wäßriger Lösungen von AgBF4, AgClO4 und AgPF6 wurde erstmals Ag2O3 erhalten. Nach Einkristalluntersuchungen liegt ein orthorhombisches Kristallsystem vor (Fdd2; a = 1286,9(1); b = 1049,0(1), c = 366,38(5) pm; Z = 8; 309 symmetrieunabhängige Reflexe; R = 1,2%). Ag2O3 ist isotyp mit Au2O3 und enthält Silber nahezu quadratisch planar von Sauerstoff koordiniert (d̄(Ag—O) = 201 pm). Die AgO4-Polyeder verknüpfen über gemeinsame Ecken zu einer Raumnetzstruktur.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865350406
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  • 5
    Electronic Resource
    Electronic Resource
    Neue Verbindungen im Sillenittyp (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 542 (1986), S. 153-156 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Sillenite-Type CompoundsNew sillenite-type compounds (Bi12(V3/4Na1/4)O20, Bi12MnO20, Bi12(Mn1/2Ge1/2)O20, Bi12(Mn3/4Na1/4)O20, Bi12(Mn2/3M1/3)O20 with M = Cu, Cd and Bi12(Mn1/2M1/2)O20 with M = B, Al, Co) were synthesized at 700-750°C in corundum crucibles. Lattice constants have been determined and UV/VIS spectra have been recorded.
    Notes: Neue in der Sillenitstruktur kristallisierende Verbindungen wurden durch Reaktion bei 700-750°C in Korundtiegeln dargestellt: Bi12(V3/4Na1/4)O20, Bi12MnO20, Bi12(Mn1/2Ge1/2)O20, Bi12(Mn3/4Na1/4)O20, Bi12(Mn2/3M1/3)O20 mit M = Cu, Cd und Bi12(Mn1/2M1/2)O20 mit M = B, Al, Co. Gitterkonstanten wurden bestimmt und UV/VIS-Spektren gemessen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865421120
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  • 6
    Electronic Resource
    Electronic Resource
    Cyclopentenon-Drivate, XII1) Zur Stereoselektivität intramolekularer Cycloadditionen (1987)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 2007-2013 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclopentenone Derivative, XII1). - Studies on the Stereoselectivity of Intramolecular CycloadditionsChemical as well as stereochemical results of intramolecular cycloadditions in the cyclopentenone series are shown to depend very strongly on the nature of the connecting unit. With linking carbon chains as in 6 and 7, cycloaddition products 8 and 9 are formed with high but differing stereoselectivity, while the sulfur analogue 11 gives rise to a 1:1.4 mixture of steroisomers 12 and 13. Some stereoselective transformations of the cycloadducts are reported.
    Notes: Das chemische wie auch stereochemische Resultat intramolekularer Cycloadditionen in der Cyclopentenon-Reihe zeigt eine starke Abhängigkeit von der Natur des Verknüpfungsgliedes. Bei Überbrückung mit einer Kohlenstoffkette werden aus den Vorstufen 6 und 7 die Cycloadditionsprodukte 8 und 9 mit ausgezeichneter, wenn auch entgegengesetzter Stereoselektivität hervorgebracht. Einbau eines Schwefelatoms in die Kohlenstoffkette indessen führt vom Thioether-Analogon 11 zu einem 1:1.4-Gemisch der stereoisomeren Cycloaddukte 12 und 13. Einige stereoselektive Transformationen der Cycloaddukte werden mitgeteilt.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19871201212
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  • 7
    Electronic Resource
    Electronic Resource
    Highly alkylated cyclohexanes. - X-Ray crystal structures, force-field calculations, and conformations of cis/trans-1,4-disubstituted cyclohexane isomers (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 1469-1474 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hochalkylierte Cyclohexane. - Röntgenstrukturanalyse, Kraftfeld-Berechnungen und Konformationen von cis/trans-1,4-disubstituierten Cyclohexan-IsomerenDie Struktur von mesyliertem cis- und trans-Tetramethylshisool cis-2 und trans-2 wurde durch Einkristall-Röntgenmethoden aufgeklärt. In cis-2 nimmt die Isopropenylgruppe im Kristall eine axiale Stellung ein, und die erhaltenen Strukturdaten stehen in gutem Einklang mit Kraftfeldberechungen. In trans-2 wurden zwei Rotamere, die durch Rotation der Isopropenylgruppe entstehen, durch NOE-Messungen zugeordnet. Der Vergleich der spektroskopischen Daten mit denen anderer Tetramethyllimonenderivate zeigt, daß diese in Verbindungen mit bevorzugt äquatorialer und bevorzugt axialer Lage der Isopropenylgruppe eingeordnet werden können.
    Notes: The structures of mesylated cis- and trans-tetramethylshisool cis- 2 and trans-2 have been elucidated by single-crystal X-ray techniques. In cis-2 the isopropenyl group adopts an axial position in the crystal, and the structural data obtained are in good agreement with those from force-field calculations. In trans-2 the two rotamers arising from rotation of the isopropenyl group were assigned by NOE measurements. Comparison of the spectroscopic data with those of other tetramethyllimonene derivatives showed that these can be classified into compounds with preferred equatorial and preferred axial position of the isopropenyl group.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881210821
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  • 8
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von Na2Mn3O7 (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 531 (1985), S. 177-182 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal-Structure of Na2Mn3O7Single crystals of Na2Mn3O7 have been grown hydrothermally applying high oxygen pressure (pO2 = 2 kbar). The new compound cystallizes triclinic; space group P1; a = 6.636(6) Å, b = 6.854(6) Å, c = 7.548(6) Å, α = 105.76(6)°, β = 106.86(6)°, γ = 111.60(6)°; Z = 2. The crystal structure has been solved and refined to R = 7.9% and Rw = 6.2% (diffractometer data, 1044 independent reflexions). The crystal structure consists of ∞2Mn3O72- anions with manganese coordinated octahedrally by oxygen. These layered anions are hold together by Na+ ions (coordination numbers 5 and 6).
    Notes: Einkristalle von bislang unbekanntem Na2Mn3O7 wurden hydrothermal unter hohem Sauerstoffdruck (pO2 = 2 kbar) erhalten, die Kristallstruktur unter Verwendung von Diffraktometerdaten aufgeklärt und verfeinert: P1; a = 6,636(6) Å, b = 6,854(6) Å, c = 7,548(6) Å, α = 105,76(6)°, β = 106,86(6)°, γ = 111,60(6)°; Z = 2; 1044 unabhängige Reflexe; R = 7,9% bzw. Rw = 6,2%. Es liegen im Sinne dichter Packungen angeordnete Sauerstoffdoppelschichten vor, deren Oktaederlücken zu 6/7 mit Mn unter Ausbildung eines ∞2Mn3O72--Anions besetzt werden. Na+ (Koordinationszahl 5 und 6) befindet sich zwischen diesen Schichtpaketen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855311224
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von Na5HI2O10 · 14 H2O (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 538 (1986), S. 159-165 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Na5HI2O10 · 14 H2OSingle crystals of Na5HI2O10 · 14 H2O were obtained for the first time. According to the results of an X-ray crystal structure determination (P1, a = 8.450(7), b = 8.533(6), c = 9.066(6) Å, α = 76.96(6), β = 62.94(5), γ = 86.98(6°, Z = 1, 4970 diffractometer data) iodine is in a distorted octahedral coordination. Two IO6 polyhedra are connected by a common edge forming dimeric anions H2I2O104-, the site symmetry is 1. Sodium exhibits C.N. 6 (mainly hydrate). A 3-d network is formed largely by H-bonds.
    Notes: Erstmals wurden Einkristalle von Na5HI2O10 · 14 H2O erhalten. Nach der Röntgenstrukturanalyse (P1; a = 8,450(7), b = 8,533(6), c = 9,066(6) Å, α = 76,96(6), β = 62,94(5), γ = 86,98(6)°, Z = 1, 4970 Diffraktometerdaten, RW = 5,41) ist Iod angenähert oktaedrisch koordiniert. Je zwei IO6-Polyeder sind über eine gemeinsame Kante zu einem dimeren Anion H2I2O104- verknüpft, das die Lagesymmetrie 1 aufweist. Natrium ist jeweils sechsfach (überwiegend durch Kristallwasser) koordiniert. Die Verknüpfung zu einem dreidimensionalen Verband erfolgt im wesentlichen über H-Brücken.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865380716
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  • 10
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von CsVHP3O10 (1988)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 567 (1988), S. 77-86 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of CsVHP3O10Hitherto unknown CsVHP3O10 crystallizes from melts prepared from Cs2CO3, V2O3 and H3PO4 (2 d at 350°C; cooling rate: 10°/h). Best yields were obtained at a molar ratio 1:1:3 of the components. According to an X-ray crystal structure determination (C2/c; a = 1208.7(5), b = 877.7(3), c = 894.4(3) pm, β = 110.76(3)°; Z = 4; R = 0.043) the title compound is a catena-triphosphate. Bond lengths and angles are compared to those of triphosphates investigated earlier.
    Notes: Vorher unbekanntes CsVHP3O10 kristallisiert aus Cs2CO3/V2O3/H3PO4-Schmelzen (2 d bei 350°C, Abkühlrate: 10°/h). Optimale Ausbeuten werden bei einem molaren Verhältnis der Komponenten von 1:1:3 erzielt. Nach der Kristallstrukturanalyse (C2/c; a = 1208,7(5), b = 877,7(3), c = 894,4(3) pm, β = 110,76(3)°; Z = 4; R = 0,043) liegt ein catena-Triphosphat vor. Die Bindungslängen und -winkel im Anion werden mit denjenigen früher untersuchter catena-Triphosphate verglichen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19885670109
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