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  • Inorganic Chemistry  (97)
  • 1990-1994  (49)
  • 1980-1984  (39)
  • 1935-1939
  • 1930-1934  (9)
  • 1991  (49)
  • 1982  (39)
  • 1934  (9)
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  • 1990-1994  (49)
  • 1980-1984  (39)
  • 1935-1939
  • 1930-1934  (9)
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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 592 (1991), S. 207-216 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and 29Si NMR Spectroscopic Investigation of Polymers with Definite Silicic Acid UnitsThree polymers were synthesized by additive reaction of the cage-like double fourring (D4R) silicic acid derivatives [(CH3)2HSi]8Si8O20 and [CH2=CH(CH3)2Si]8Si8O20 resp., with the unsaturated diviyltetramethyldisiloxane or the multiple functional tetramethylcyclotetrasiloxane and polymethylhydrogensiloxane in a molar ratio of functional groups 1:1. By means of 29Si solid state NMR spectroscopy was shown that the in organic solvents insoluble polymers are built up by D4R silicic acid units, which are connected by chain-like or cyclic siloxane bridges. With increasing functional groups of the reactants the sterical hindrance of the reaction of D4R derivates grows. The polymers show small surfaces of 1 to 8 m2/g.
    Notes: Durch Additionsreaktion der käfigartigen Doppelvierring-(D4R-)kieselsäurederivate [(CH3)2Hsi]Si8O20 mit dem zweifach ungesättigten Divinyltetramethyldisiloxan bzw. den mehrfachfunktionellen Tetramethylcyclotetrasiloxan und Polymethylhydrogensiloxan in molaren Verhältnis der funktionellen Gruppen von 1:1 wurden 3 in organischen Lösungsmitteln unlösliche Polymere hergestellt. 29Si-Festkörper-NMR-Untersuichungen zeigen, daß sich die Polymere aus D4R-Kieselsäureeinheiten aufbauen, die über ketten- oder ringförmige Siloxanbrückcn miteinander vernetzt sind. Mit zunehmender Zabl funktioneller Gruppen in den Reaktionspartnern der D4R-Derivate wächst die räumliche Behinderung der Vernetzungsreaktionen. Die Polymere weisen nur eine kleine Oberfläche zwischen 1 und 8 m2/g auf.
    Additional Material: 2 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Nickel(II), cobalt(II) phosphinothioic-N-organylamidato chelates ; magnetism ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nickel(II) and Cobalt(II) Phosphinothioic-N-Organylamidato Chelates [R2P(S)NR′]2M: Magnetic Properties and Crystal StructuresPhosphinothioic-N-organylamidato chelates [R2P(S)NR′]2M (R, R′ = organyl; M = Ni, Co) 1, 2 have been obtained by reaction of MCl2 with [R2P(S)NR′]Li. According to magnetic and spectroscopic measurements (UV/VIS) NiII complexes 1 d (R = i-Pr, R′ = Me), 1 h (R = t-Bu, R′ = Me), 1 i (R = t-Bu, R′ = Et) and 1 m (R = t-Bu, R′ = Ph) are planar in solid state. For 1 i transgeometry of the donor atoms in the chromophore NiN2S2 has been proved. NiII complexes 1 a (R = Me, R′ = i-Pr) and 1 b (R = Me, R′ = c-Hex) show magnetic moments of c. 1.2 B.M. Magnetic moments of all other solid complexes 1, 2 are in a range usually found with tetrahedral coordination. In solution 1 c (R = Me, R′ = t-Bu), 1 e-g (R = i-Pr; R′ = i-Pr, c-Hex, t-Bu), and 1 j-l (R = t-Bu; R′ = i-Pr, c-Hex, t-Bu) are entirely tetrahedral while with 1 a, 1b, 1 i, and 1 m there exists an equilibrium planar ⇌ tetrahedral. This is shifted to the right with increasing R and R′ the influence of R being less than that of R′. The crystal structures of 1 k (R = t-Bu, R′ = c-Hex) and 2 a (R, R′ = t-Bu) reveal a distorted tetrahedral coordination. 1 k: orthorhombic, a = 1 343.7(1), b = 1 514.9(1), c = 1 632.4(2) pm; Pccn, Z = 4, 3 205 reflections, R = 0.03. 2 a: orthorhombic, a = 1 637.9(2), b = 2 997.0(3), c = 1 282.4(1) pm; Pbca, Z = 8, 4 742 reflections, R = 0.04.
    Notes: Durch Umsetzung von MCl2 mit [R2P(S)NR ′]Li wurden die Thiophosphinsäureamidato-Chelate [R2P(S)NR ′]2M (R, R′ = Organyl; M = Ni, Co) 1, 2 erhalten. Magnetischen und spektroskopischen Messungen (UV/VIS) zufolge sind die NiII-Komplexe 1 d (R = i-Pr, R′ = Me), 1 h (R = t-Bu, R′ = Me), 1i (R = t-Bu, R′ = Et) und 1m (R = t-Bu, R′ = Ph) im Festkörper planar, wobei für 1i trans-Stellung der Donatoratome im Chromophor NiN2S2 nachgewiesen wurde. Im Festzustand weisen die NiII-Komplexe 1a (R = Me, R′ = i-Pr) und 1 b (R = Me, R′ = c-Hex) magnetische Momente von ca. 1,2 B.M. auf, während die aller anderen Komplexe 1, 2 in einem Bereich liegen, wie man ihn bei tetraedrischer Koordination erwartet. In Lösung erweisen sich 1 c (R = Me, R′ = t-Bu), 1 e-g (R = i-Pr; R′ = i-Pr, c-Hex, t-Bu) und 1 j-l (R = t-Bu; R′ = i-Pr, c-Hex, t-Bu) als rein tetraedrisch, während 1 a, 1 b, 1 i und 1 m einem Konformerengleichgewicht planar ⇌ tetraedrisch unterliegen, das sich mit steigender Raumerfüllung von R und R′ nach rechts verschiebt. Der Einfluß von R ist hierbei geringer als der von R′. Kristallstrukturanalysen für 1 k (R = t-Bu, R′ = c-Hex) und 2 a (R, R′ = t-Bu) bestätigen eine verzerrt tetraedrische Koordination. 1 k: rhombisch, a = 1 343,7(1), b = 1 514,9(1), c = 1 632,4(2) pm; Pccn, Z = 4; 3 205 Reflexe, R = 0,03. 2 a: rhombisch, a = 1 637,9(2), b = 2 997,0(3), c = 1 282,4(1) pm; Pbca, Z = 8; 4 742 Reflexe, R = 0,04.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 136-146 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dichlorophosphato Complexes of Tin, Titanium, and Molybdenum. Crystal Structure of (AsPh4)2[MoOCl3(PO2Cl2)]2The dichlorophosphate complexes (AsPh4)2[SnCl4(PO2Cl2)]2 (I), (AsPh4)2[TiCl4(PO2Cl2)]2 (II) and (AsPh4)2[MoOCl3(PO2Cl2)]2 (III) are prepared by the reactions of SnCl4, TiCl4, and MoCl5, respectively, with AsPh4[PO2Cl2] in dichlormethan solutions. According to their i.r. spectra, the complex anions form dimeric species via the oxygen atoms of the dichlorophosphate groups; the 119Sn Mössbauer spectra of I are reported in addition. The crystal structure of III is solved by X-ray diffraction methods and refined to R = 4.3%. (AsPh4)2[MoOCl3(PO2Cl2)]2 crystallizes in the triclinic space group P1 with one formula unit pro unit cell. The structure consists of tetraphenylarsonium cations and centrosymmetric anions [MoOCl3(PO2Cl2)]22⊖. The molybdenum atoms of the anions are linked via the O atoms of the dichlorophosphate groups forming nonplanar Mo2O4P2 eight-membered rings.
    Notes: Die Dichlorphosphato-Komplexe (AsPh4)2[SnCl4(PO2Cl2)]2 (I), (AsPh4)2[TiCl4(PO2Cl2)]2 (II) und (AsPh4)2[MoOCl3(PO2Cl2)] 2 (III) werden aus SnCl4, TiCl4 bzw. MoCl5 mit AsPh4[PO2Cl2] in Dichlormethanlösung hergestellt. Nach den Schwingungsspektren sind die komplexen Anionen über die O-Atome der Dichlorphosphatgruppen zu Dimeren assoziiert; für I wird zusätzlich das 119Sn-Mößbauer-Spektrum mitgeteilt. Die Kristallstruktur von III wurde mittels Röntgenbeugung ermittelt und bis R = 4,3% verfeinert. (AsPh4)2[MoOCl3(PO2Cl2)]2 kristallisiert triklin in der Raumgruppe P1 mit einer Formeleinheit pro Elementarzelle. Die Struktur besteht aus Tetraphenylarsoniumkationen und zentrosymmetrischen Anionen [MoOCl3(PO2Cl2)]22⊖. Die Molybdänatome der Anionen sind über die O-Atome der Dichlorphosphatgruppe zu einem gewellten Mo2O4P2 Achtring verknüpft. Die äquatorial angeordneten, terminalen Oxoliganden (r MoO = 166 pm) üben auf die Mo—O-Bindungen der Dichlorphosphatliganden einen starken trans-Effekt aus, so daß sich zwei verschiedene Mo—O-Bindungsabstände von 227 bzw. 210 pm ergeben.
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  • 5
    ISSN: 0009-2940
    Keywords: Sulfur diimides ; 1,3-Cycloaddition, reductive ; 1,2,4,3-Thiadiazaboretidines ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Properties of 1,2,4,3-Thiadiazaboretidines. Crystal Structure of 2,4-Di-tert-butyl-3-phenyl-1,2,4,3-thiadiazaboretidineReaction of sulfur diimides with alkyl(aryl)bis(methylthio)boranes leads to reductive 1,3-cycloaddition of the NSN sequence with formation of the 1,2,4,3-thiadiazaboretidines 2a-g. NMR (1H, 11B, 13C, 15N, 29Si), mass spectra and the results of the X-ray analysis of 21 are reported and discussed. The 11B chemical shifts have been calculated for 3-phenyl-1,2,4,3-thiadiazaboretidine and some related model compounds by the IGLO method and correlate acceptably with the experimental values.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 3436-3443 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthese und Reaktionsfähigkeit von 2-Aroylbenzoesäuren, II. 2-(4-Hydroxy-3-isopropylbenzoyl)benzoesäureDie Friedel-Crafts-Acylierung von 2-Isopropylphenol mit Phthalsäureanhydrid liefert nur die 2-(4-Hydroxy-3-isopropylbenzoyl)benzoesäure (1) vom p-Acylphenol-Typ. Die Reaktionsfähigkeit der Säure 1 wurde untersucht, und ihre Derivate 2-10 werden beschrieben.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1711-1714 
    ISSN: 0009-2940
    Keywords: 2,4,6,8,10-Hexaoxa-1,3,5,7-tetraphosphatricyclo[3.3.1.1]decane 1-sulfide, molecular and crystal structure ; P4O6 derivatives ; Calculations, SCF, for P4O7 and P4O6S ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: P4O7 and P4O6S, Comparison of Molecular and Crystal StructureSingle crystals of P4O6S were grown for the first time. By X-ray diffraction the space group (P21/c), the unit cell [α = 813.5(1), b = 938.3(1), c = 993.1(1) pm; β = 90.27(1)°], and the crystal and molecular structure have been determined. As compared to P4O7, the geometry of the P4O6 cage remains virtually unchanged upon substitution of the terminal oxygen atom by a sulfur atom. Calculated charge distributions clearly confirm the experimental results. With the exception of P(1), to which the additional chalcogen atom is attached, the effective charges at all other atoms seem not to be affected by an exchange of the terminal oxygen atom by a sulfur atom.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 83-85 
    ISSN: 0009-2940
    Keywords: 1,3,2λ5,4λ5-Dithiadistannetane, 2,4-bis[benzoyl(thiobenzoyl)methanato-O,S]-2,4-dibutyl- ; Anisobidentate ligands ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Butyltin triisopropoxide reacts with benzoyl(thiobenzoyl)methane (LH) to yield BuSn(S)L and an organic sulfide 2 instead of the expected BuSnL3. The use of other butyltin(IV) starting materials invariably leads to the same products. From an X-ray structure determination the tin sulfido complex is found to be a centrosymmetric dimer, [BuSn(S)L]2 (1) with a planar four-membered Sn2S2 ring containing pentacoordinated tin atoms.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 221 (1934), S. 182-186 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird das Fällungsvermögen gealterter Ammoniumsulfidlösungen auf das Manganoion in Gegenwart von Ammoniumsalzen untersucht und gefunden, daß solche Lüsungen mit Beginn der Schwefelabscheidung ihre fällende Wirkung verlieren.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 221 (1934), S. 173-176 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Tab.
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