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  • Articles  (398)
  • Inorganic Chemistry  (283)
  • Physical Chemistry  (86)
  • Gas chromatography
  • Wiley-Blackwell  (398)
  • 1985-1989  (206)
  • 1975-1979  (192)
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  • Articles  (398)
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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of nonreactive surfaces for reaction-rate studies (1976)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 8 (1976), S. 23-24 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550080104
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  • 2
    Electronic Resource
    Electronic Resource
    Collisional deactivation of O2(1Σg+) (1979)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 11 (1979), S. 175-185 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Relaxation rates for O2(1Σg+) by nonradiative pathways have been determined using the fast-flow technique. O2(1Σg+) is formed from O2(1Δg) by an energy pooling process. O2(1Δg) is generated by passing purified oxygen through a microwave discharge. Oxygen atoms are removed by distilling mercury vapor through the discharge zone. It has been observed that the wall loss rate for O2(1Σg+) decreases with increasing pressure of oxygen and thus appears to be diffusion controlled. Quenching rate constants for O2, N2, and He have been determined and found to be (1.5 ± 0.1) × 104, (1.0 ± 0.05) × 106 and (1.2 ± 0.1) × 105 l./mol·sec, respectively.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550110209
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  • 3
    Electronic Resource
    Electronic Resource
    Caracterisation Structurale de l′Oxyfluorotungstate de Cuivre CuWO3F2 (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 539 (1986), S. 165-174 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of CuWO3F2The crystal structure of the copper(II) oxyfluoridetungstate CuWO3F2 has been determined from single crystal X-ray data. The symmetry is monoclinic (space group P21/m) with lattice parameters a = 5.223(1) Å, b = 9.599(4) Å, c = 3.670(1) Å, β = 106.26(1)° (Z = 2). The structure has been fixed by the heavy atom method and refined by least square calculations down to a R factor of 0.019. Oxygen-fluorine ordering has been determined on the network built up by corner sharing octahedra constituting infinite chains, by several methods: Raman spectroscopy, electrostatic energy calculations, and bond valence determinations. The structural formulation of the octahedra is (WO2F2O2/2)2-.
    Notes: La structure cristalline de l′oxyfluorotungstate de cuivre CuWO3F2 a été déterminée par diffraction × sur monocristal (R = 0,019). CuWO3F2 cristallise dans le système monoclinique avec le groupe spatial P21/m et les paramètres a = 5,223(1) Å, b = 9,599(4) Å, c = 3,670(1) Å, β = 106,26(1)°, Z = 2. Le réseau est constitué d′octaèdres WX6 (X = O, F) liés par des sommets en position trans formant une chaîne infinie. Les atomes de cuivre divalent sont insérés entre les chaînes en coordinence octaédrique déformée (4+2). L′ordre oxygène-fluor au sein de CuWO3F2 a été établi à l′aide de la spectroscopie Raman, de calculs d′énergie électrostatique et de la méthode des bilans des valences de liaisons. La chaîne octaédrique peut se formuler (WO2F2O2/2)2-.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865390815
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  • 4
    Electronic Resource
    Electronic Resource
    Thermodynamic and spectroscopic properties of 2-pyrrolidinones. 3.For Part 2, see P. Ruostesuo and P. Pirilä-Honkanen, submitted for publication, J. Sol. Chem. NMR spectroscopic studies on 2-pyrrolidinone in different solvents (1989)
    Chichester : Wiley-Blackwell
    Journal of Physical Organic Chemistry 2 (1989), S. 565-572 
    Details
    ISSN: 0894-3230
    Keywords: Organic Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 1H, 13C, 15N and 17O NMR chemical shifts, 1JNH and 1JCH coupling constants and line widths (Δν1/2) of the 14N and 17O resonance lines were determined for 2-pyrrolidinone neat and for several 2-pyrrolidinone-solvent systems. The 17O NMR chemical shift of 2-pyrrolidinone was clearly most sensitive to the solvent effects, but changes with the solvent were also observable in the 13C (C=O) and 15N NMR chemical shifts, the 1JNH coupling constants and especially the line widths of the 14N and 17O resonance lines. In general, the results reflected a hydrogen bonding effect between the oxygen atom of 2-pyrrolidinone and the proton-donating solvents and a weak molecular interaction of the NH proton of 2-pyrrolidinone with the proton-accepting solvents. The results are compared with the NMR data for the corresponding binary mixtures of 1-ethyl-2-pyrrolidinone.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/poc.610020709
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen an oxidischen Katalysatoren. XLVI. Synthetische Boroalumosilicate mit Pentasilstruktur (SABO): Strukturelle, oberflächenchemische und katalytische EigenschaftenProfessor Ch. M. Minačew zum 80. Geburtstage am 24. Dezember 1988 gewidmet (1988)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 566 (1988), S. 39-48 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on Oxide Catalysts. XLVI. Synthetic Boroaluminosilicates with Pentasil Structure (SABO): Structural, Surface Chemical, and Catalytical PropertiesA remarkable modification of ZSM-5 type zeolites is possible by isomorphous substitution of silicon and/or aluminium by boron. In the H-forms of these SABO zeolites the boron atoms mainly exist in a trigonal lattice oxygen environment and hence they are not envolved in the formation of Broensted acid sites. Consequences of incorporated boron for catalytic reactions result from a decrease in the strength of existing Broensted sites as well as from a partial lattice contraction.
    Notes: Eine bemerkenswerte Modifizierung von Zeolithen des ZSM-5-Typs gelingt auf dem Wege der isomorphen Substitution von Silicium und/oder Aluminium durch Bor. In den H-Formen derartiger SABO-Zeolithe liegt Bor bevorzugt in trigonaler Gittersauerstoffkoordination vor und ist 30mit an der Bildung von Brönsted-Säurezentren nicht beteiligt. Konsequenzen eines isomorphen Boreinbaus für katalytische Reaktionen ergeben sich im wesentlichen aus einer Verringerung der Stärke vorhandener Brönsted-Zentren sowie aus einer mehr oder weniger starken Gitterkontraktion.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19885660106
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  • 6
    Electronic Resource
    Electronic Resource
    Komplexkatalyse. XXXIII. Zum Einfluß von Anionen (B(O2C6H4)2-, CF3CO2-, Br-, I-) auf die Einschubreaktion von Hexa-1,5-dien in die Allyl-nickel(II)-Bindung. Darstellung und Charakterisierung des η2,η1,η2-Nona- und Deka-1,8-dien-5-yl-nickel(II)-bis(brenzcatechinato)boratsProfessor Kurt Issleib zum 70. Geburtstage am 19. November 1989 gewidmet (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 578 (1989), S. 89-98 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Catalysis. XXXIII. To the Influence of Anions (B(O2C6H4)2-, CF3CO2-, Br-, I-) on the Insertion Reaction of Hexa-1,5-diene into the Allyl Nickel(II) Bond. Preparation and Characterization of η2,η1,η2-Nona- and Deka-1,8-diene-5-yl-nickel(II) bis(brenzcatechinato)borate[η3-C3H5NiB(O2C6H4)2] and [η3-C4H7NiB(O2C6H4)2] react with hexa-1,5-diene in CH2Cl2 by an insertion reaction into the allyl nickel bond to give the corresponding η2,η1,η2-nona- and deca-1,8-diene-5-yl-nickel(II) complex, respectively. Both chelate organyl nickel(II) complexes are monomeric; they are examples demonstrating the special suitability of the bis(brenzcatechinato)-borate anion for the preparation of organometallic reaction products in the allyl nickel chemistry. The known dimeric allyl nickel(II) compounds [C3H5NiX]2 (X- = CF3CO2-, Br-, I-) do not show this reaction.
    Notes: [η3-C3H5NiB(O2C6H4)2] und [η3-C4H7NiB(O2C6H4)2] reagieren mit Hexa-1,5-dien in CH2Cl2 unter Einschubreaktion in die Allylnickel-Bindung zu dem entsprechenden η2,η1,η2-Nona-bzw. Deka-1,8-dien-5-yl-nickel(II)-Komplex. Beide Chelatorganylnickel(II)-Komplexe sind monomer und ein Beispiel für die besondere Eignung des Bis(brenzcatechinato)borat-Anions zur Darstellung von metallorganischen Reaktionsprodukten in der Allylnickelchemie. Die bekannten dimeren Allylnickel(II)-Verbindungen [C3H5NiX]2 (X- = CF3CO2-, Br-, I-) zeigen diese Reaktion nicht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895780111
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  • 7
    Electronic Resource
    Electronic Resource
    Komplexkatalyse. XXXII. Synthese und Charakterisierung von η3-Allyl-, η3-Crotyl-und η1,η2-Cyclooct-4(Z)-en-1-yl-nickel(II)-bis(brenzcate-chinato)-borat und ihre Eignung als Katalysatoren für die stereospezifische Butadienpolymerisation (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 577 (1989), S. 245-254 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Catalysis. XXXII. Synthesis and Characterization of η3-Allyl-, η3-Crotyl-, and η1,η2-Cyclooct-4(Z)-en-1-yl-nickel(II)-bis(brenzcatechinato)borate and their Suitability as Catalysts for the Stereospecific Butadiene PolymerizationBy reaction of [(η3-C3H5)2Ni], [(η3-C4H7)2Ni], and [Ni(cycloocta-1,5-diene)2] with one equivalent bis(brenzcatechinato)boric acid HB(O2C6H4)2 in ether the complexes given in the title could be synthesized in good yields. The allyl complex [η3-C3H5NiB(O2C6H4)2] reacts with cycloocta-1,5-diene (COD) to give a cationic complex [η3-C3H5Ni(COD)]B(O2C6H4)2 and catalyses the 1,4-trans-polymerization of butadiene with an activity of ca. 150 ml C4H6/mol Ni · h and a selectivity of 78% under standard conditions at room temperature.
    Notes: Durch Reaktion von [(η3-C3H5)2Ni], [(η3-C4H7)2Ni] und [Ni(cycloocta-1,5-dien)2] mit jeweils einem Äquivalent Bis(brenzcatechinato)borsäure HB(O2C6H4)2 in Ether sind die im Titel genannten Komplexe in guter Ausbeute zugänglich. Der Allylkomplex [η3-C3H5NiB(O2C6H4)2] bildet mit Cycloocta-1,5-dien (COD) einen kationischen Komplex [η3-C3H5Ni(COD)]B(O2C6H4)2 und katalysiert unter Standardbedingungen bei Raumtemperatur mit einer Aktivität von etwa 150 mol C4H6/mol · Ni · h und einer Selektivität von etwa 78% die 1,4-trans-Polymerisation des Butadiens.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895770128
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  • 8
    Electronic Resource
    Electronic Resource
    Etude par RMN de 19F de la Solution Solide K1-xBixF1+2x et de la Phase Ordonnée KBi3F10 (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 537 (1986), S. 40-52 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Study on the 19F NMR of the Solid Solution K1-xBixF1+2x and the ordered KBi3F10 phase KBi3F10The solid solution K1-xBixF1+2x (0.50 ≤ x ≤ 0.70) and the ordered KBi3F10 phase have been investigated by 19F NMR. The evolution of the absorption spectra shows that the number of mobile F- ions increases with temperature. The higher the fluorine concentration, the higher the temperature required to observe for all F- ions a jump frequency exceeding dipolar frequency; it increases from 250 K for K0.49Bi0.51F2.02 to 425 K for KBi3F10.The analysis of the results vs x confirms that the lower limit of the solid solution corresponds to 0.49 〈 x 〈 0.51. The results are consistent with a progressive extension of the local clustering of defects (F8 cubes and F12 cubooctahedra) up to formation of the long range ordered phase KBi3F10.Comparison with electrical conductivity measurements shows that the motions detected by NMR are diffusive ones.
    Notes: Résumé. La solution solide K1-xBixF1+2x (0,50 ≤ x ≤ 0,70) et la phase ordonnée KBi3F10 ont été étudiées par RMN de 19F. L'évolution des spectres d'absorption laisse apparaître une augmentation du nombre de fluors mobiles avec la température. La température à partir de laquelle tous les fluors ont une fréquence de sauts supérieure à la fréquence dipolaire augmente régulièrement de 250 à 425 K lorsque l'on passe de la composition K0,49Bi0,51F2,02 à KBi3F10.L'analyse des résultats obtenus confirme que la limite inférieure de la solution solide correspond à 0,49 〈 x 〈 0,51 et que les défauts s'ordonnent localement en cubelets F8 et cubooctaèdres F12, qui s'étendent progressivement au sein de la solution solide jusqu'à la formation de la phase ordonnée à grande distance KBi3F10.La comparaison avec les mesures de conductivité montre que les mouvements des ions F- vus par RMN sont des mouvements diffusifs.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865370605
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  • 9
    Electronic Resource
    Electronic Resource
    Elektrochemische Darstellung von Cyclopolyphosphanen - Elektrochemische Untersuchung von Phenyldichlorphosphan, o-, m-, p-Bromphenyl-dichlorphosphan sowie tert.-Butyldichlorphosphan (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 542 (1986), S. 167-174 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Different Cyclopolyphosphanes by Cathodic Reduction, Electrochemical Investigation of Phenyldichlorophosphane, o-, m-, p-Bromophenyldichlorophosphane and tert.-ButyldichlorophosphaneThe electrochemical properties of selected dichlorophosphanes R-PCl2 (R = C6H5, o-BrC6H4, m-BrC6H4, p-BrC6H4, t-Bu) have been investigated by the Differential-Pulse-Polarography (DPP) and by cyclic voltammetry. On the basis of the obtained results an electrolysis (cathodic reduction) has been carried out with these substances in a 1,2-dichlorethane/0.1 M tetrabutyl-ammonium tetrafluoroborate solution with a mercury pool. The following cyclopolyphosphanes have been prepared, isolated, and characterized: (C6H5P)5,(4); (o-BrC6H4P)4; (m-BrC6H4P)5,(4,6); (p-BrC6H4P)5,(4); (t-BuP)4.
    Notes: Mit Hilfe von Differential-Puls-Polarographie (DPP) und Cyclovoltammetrie wurde das elektrochemische Verhalten ausgewählter Dichlorphosphan-Verbindungen R-PCl2 (R = C6H5, o-BrC6H4, m-BrC6H4, p-BrC6H4, t-Bu) untersucht. Auf der Grundlage der erhaltenen Werte wurden diese Substanzen in einer 1,2-Dichlorethan/0,1 M Tetrabutylammonium-tetrafluoroborat-Lösung kathodisch an einem Quecksilbersee elektrolysiert. Folgende Cyclopolyphosphane wurden dabei hergestellt, isoliert und charakterisiert: (C6H5P)5,(4); (o-BrC6H4P)4; (m-BrC6H4P)5,(4,6); (p-BrC6H4P)5,(4); (t-BuP)4.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865421122
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  • 10
    Electronic Resource
    Electronic Resource
    Quenching of O2(1Δg) by aliphatic amines (1985)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 17 (1985), S. 1315-1320 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The quenching rate constants of O2(1Δg) with n-butylamine, diethylamine, dipropylamine, dibutylamine, and tripropylamine have been determined in a discharge flow system. The rate constants are found to be (1.6 ± 0.2) × 103, (8.5 ± 0.6) × 104, (9.8 ± 0.5) × 104, (2.1 ± 0.1) × 105, and (8.6 ± 0.5) × 105 1 mol-1 s-1, respectively. The rate constants are found to increase in the order, tertiary amine → secondary amine → primary amine. The “inductive effect” of alkyl substitution is also found to increase the rate constant in a given series of amines.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550171208
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