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  • 1
    Electronic Resource
    Electronic Resource
    Benzyltitanium- und -zirconium/Al2O3-Katalysatoren zur partiellen Hydrierung von AcetylenHerrn Professor Dr. Dr. H. G. O. Becker zum 70. Geburtstag gewidmet (1992)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 334 (1992), S. 521-525 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Benzyl Titanium and Zirconium Alumina Catalysts for Partial Hydrogenation of AcetyleneBenzyl titanium and zirconium compounds of the types Bzl4M, C5H5MBzl3, and (C5H5)2MBzl2 form surface compounds on dehydroxylated alumina (15% α-, and 85% δ-Al2O3) which on hydrogenolysis yield TiH- and ZrH-species. The supported systems were studied with respect to catalytic activity in the partial hydrogenation of acetylene. Supported (C5H5)2TiBzl2 was proved to be inactive and the systems C5H5TiBzl3(Al2O3) and Bzl4/Al2O3 catalyze the formation of polyacetylene, but catalysts containing benzyl zirconium species are suitable for the partial hydrogenation of acetylene. Acitivity and selectivity of the system C5H5ZrBzl3/Al2O3 are comparable to industrial used Pd/Al2O3 catalysts.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19923340613
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  • 2
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. 63. Darstellung und Kristallstruktur von Tetramethyltitan-tetrahydrofuran (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 861-864 
    Details
    ISSN: 0044-2313
    Keywords: Tetramethyltitanium tetrahydrofuran ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. 63. Preparation and Crystal Structure of Tetramethyltitanium TetrahydrofuranMe4Ti · 2THF 1 dissoziates partially in n-pentane. The formed Me4Ti · THF 2 could be isolated. According to X-ray structure determination the molecules of 2 have a trigonalbipyramidal shape with the THF molecule in axial position.
    Notes: Me4Ti · 2THF 1 unterliegt in n-Pentan einer partiellen Dissoziation. Das dabei entstehende Me4Ti · THF 2 konnte isoliert und die Kristallstruktur ermittelt werden. Danach liegen die Moleküle von 2 im Kristall in trigonal-bipyramidaler Form vor, mit dem THF-Molekül in axialer Position.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210526
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  • 3
    Electronic Resource
    Electronic Resource
    Darstellung und Reaktionen von Natriumtellurid, Na2Te - Kristallstruktur von [Na(CH3OH)3]2Te2Professor Gerhard Thiele zum 60. Geburtstag gewidmet (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 231-234 
    Details
    ISSN: 0044-2313
    Keywords: Sodium tellurides ; dialkyl tellurides ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Reactions of Sodium Telluride, Na2Te - Crystal Structure of [Na(CH3OH)3]2Te2Sodium telluride, Na2Te 1, is easily obtained by reaction of sodium with hexagonal tellurium in 1,2-dimethoxy-ethane in the presence of catalytic amounts of naphthalene. Upon exposure to oxygen 1 reacts with methanol forming [Na(CH3OH)3]2Te2 2, which crystal structure was determined. Compound 1, prepared in situ, can be conveniently converted into dialkyl tellurides, R2Te (R = C2H5, i-C3H7, CH2 = CH—CH2 3).
    Notes: Natriumtellurid, Na2Te 1, läßt sich auf bequeme Art und Weise aus Natrium und hexagonalem Tellur in 1,2-Dimethoxy-ethan als Reaktionsmedium in Anwesenheit katalytischer Mengen an Naphthalin gewinnen. Bei der Einwirkung von Sauerstoff auf 1 in Gegenwart von Methanol entsteht [Na(CH3OH)3]2Te2 2, dessen Kristallstruktur ermittelt wurde. In situ gewonnenes 1 kann auf einfache Weise in Dialkyltelluride, R2Te, übergeführt werden (R = C2H5, i-C3H7, CH2 = CH—CH2 3).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220205
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  • 4
    Electronic Resource
    Electronic Resource
    Tetramethyldisilan-1,2-diyl-verbrückte Dicyclopentadienyl-und Diindenylmetalldichloride der 4. Gruppe - Kristallstruktur von (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1806-1810 
    Details
    ISSN: 0044-2313
    Keywords: Metallocene dichlorides, bridged cyclopentadienyl and indenyl compounds ; crystal structure ; 1H ; 13C ; 29Si n.m.r., and MS spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetramethyldisilane-1,2-diyl bridged Dicyclopentadienyl and Diindenyl Metal Dichlorides of the Group 4 Metals - Crystal Structure of Dicyclopentadienyl and diindenyl metal dichlorides of the type Cp′—SiMe2SiMe2—Cp′MCl2 (Cp′ = C5H4, M = Ti (1), Zr (2), Hf (3); Cp′ = C9H7, M = Zr (4), Hf (5)) were synthesized and characterized by means of their 1H, 13C, 29Si-n.m.r., MS, and IR spectra. The crystal structure of 2 was determined.
    Notes: Dicyclopentadienyl- und Diindenylmetalldichloride des Typs Cp′—Me2Si—Me2Si—Cp′MCl2(Cp′ = C5H4; M = Ti(1), Zr (2), Hf (3); Cp′ = C9H7; M = Zr (4), Hf (5)) wurden synthetisiert und mittels ihrer 1H-, 13C- und 29Si-NMR-Spektren sowie MS- und IR-Spektren charakterisiert. Die Kristallstruktur von 2 wurde ermittelt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966221028
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. 54. Bildung cyclischer Chalkogenide des Typs [Cp2*Zr(μ-E)]2bei der Thermolyse von Permethylzirconocendivinyl in Gegenwart von Schwefel, Selen und Tellur (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 573 (1989), S. 195-198 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Organo Transition Metal Compounds. 54. Formation of Cyclic Chalcogenides of the Type [Cp2*Zr(μ-E)]2 at Thermolysis of Permethylzirconocene Divinyl in Presence of Sulfur, Selenum, and Tellurium4-membered cyclic chalcogenides of the type [Cp2*Zr(μ-E)]2are formed at thermolysis of Cp2*Zr(CH=CH2)2 in presence of sulfur, selenum and tellurium using an aliphatic hydrocarbon as a solvent. During the reactions acetylene and ethylene are liberated in equimolar amounts, which indicates the formation of a zirconocene acetylene ethylene complex as an intermediate.
    Notes: Die Thermolyse von Cp2*Zr(CH=CH2)2 in aliphatischen Kohlenwasserstoffen als Lösungsmittel führt in Gegenwart von Schwefel, Selen und Tellur zur Bildung viergliedriger cyclischer Chalkogenide des Typs [Cp2*Zr(μ-E)]2. Die Reaktionen verlaufen unter Freisetzung äquimolarer Mengen an Acetylen und Ethylen, was auf die intermediäre Bildung eines Zirconocenethylen-acetylen-Komplexes schließen läßt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895730119
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XI. Über Darstellung und Eigenschaften von Lithiumalkylotitanaten (IV) (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 401 (1973), S. 113-120 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Chemistry of Transition Metal Alkyl Compounds. XI. Preparation and Properties of Lithium Alkylo Titanates(IV)Tetramethyl titanium and other titanium compounds react with organolithium compounds forming complexes which can be isolated in form of crystalline, coloured adducts in presence of mono or bidentate oxygen or nitrogen containing ligands.On account of the experimental results these compounds may be considered as ionic alkylo titanates(IV).
    Notes: Titantetramethyl und andere Titantetraorganyle reagieren mit lithiumorganischen Verbindungen und mit Lithiumchlorid zu Komplexen, die in Gegenwart geeigneter ein- und zweizähniger sauerstoff- oder stickstoffhaltiger Liganden in Form kristalliner, farbiger Addukte isoliert werden können.Auf Grund der experimentellen Ergebnisse wird auf das Vorliegen ionisch gebauter Alkylotitanate(IV) geschlossen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19734010114
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  • 7
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XIV. Untersuchungen über Benzylwolframverbindungen-Darstellung und Charakterisierung des Wolframtetrabenzyls (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 412 (1975), S. 11-19 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XIV. Investigations on Benzyl Tungsten Compounds. - On the Formation and Characterization of Tetrabenzyl TungstenUnstable benzyl tungsten pentachloride is formed from tribenzyl boron and tungsten hexachloride. Other benzylating agents yield only less defined reduction products. - Reacting WCl4 · 2 THF with dibenzyl magnesium W(CH2C6H5)4 can be obtained. The new compound is stable at room temperature and is thoroughly characterized.
    Notes: Bortribenzyl reagiert mit Wolfram(VI)-chlorid zu instabilem Benzylwolframpentachlorid, während mit anderen Benzylierungsmitteln nur wenig definierte Reduktionsprodukte entstehen. - Aus WCl4 · 2 THF und Magnesiumdibenzyl konnte das bei Raumtemperatur stabile Wolframtetrabenzyl gewonnen werden, das eingehend charakterisiert wurde.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754120103
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  • 8
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XV. Bildung und Eigenschaften von Phenylvanadindichlorid (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 415 (1975), S. 104-108 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XV Preparation and Properties of Phenyl Vanadium DichlorideVanadium(IV) chloride reacts with diphenyl zinc forming extremely air sensitive, at room temperature stable phenyl vanadium dichloride. The diffuse reflectance spectrum indicates an octahedral structure of the vanadium compound which is to regard as a coordination polymer. - Diethyl ether causes a cleavage of the V - C bond with formation of a vanadium dichloride etherate.
    Notes: Bei Einwirkung von Zinkdiphenyl auf Vanadin(IV)-chlorid entsteht äßerst luftempfindliches, bei Zimmertemperatur stabiles Phenylvanadindichlorid C6H5VCl2, das eingehend charakterisiert wurde. Das Reflexionsspektrum spricht für eine oktaedrische Anordnung der Liganden am Vanadin und damit für die Struktur eines Koordinationspolymeren. Diäthyläther bewirkt eine Spaltung der V-C-Bindung unter Bildung eines Vanadin(II)-chlorid-ätherates.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754150203
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  • 9
    Electronic Resource
    Electronic Resource
    Untersuchungen an Vanadinsäureestern. Zur Thermolyse und Assoziation von Trialkyl-orthovanadaten (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 434 (1977), S. 271-276 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Vanadic Acid Esters. II. Thermolysis and Association of Trialkyl OrthovanadatesA reaction mechanism for the course of thermal decomposition of orthovanadic acid esters is derived from gaschromatographic investigations. The decomposition starts with an association of the ester molecules. Cryoscopic molecular mass determinations of vanadic acid esters in cyclohexane indicate a strong association, which depends on the ester concentration and the constitution of the alcoxide groups.
    Notes: Aus gaschromatographischen Untersuchungen wird ein Reaktionsmechanismus für den thermischen Zerfall von Orthovanadinsäureestern abgeleitet. Danach beginnt der Zerfall mit einer Assoziation der Estermolekeln. Kryoskopische Molmassebestimmungen an Vanadinsäureestern in Cyclohexan lassen eine starke Assoziation erkennen. Der Assoziationsgrad hängt ab von der Esterkonzentration und von der Konstitution der Alkoxidgruppen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774340133
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  • 10
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XX. [1]. Zur Reaktion von NiCl2 · 2PR3 und CoCl2 · 2PR3 mit LiSn(CH2C6H5)3 (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 425 (1976), S. 151-154 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XX. On the Reaction of NiCl2 · 2 PR3 and CoCl2 · 2 PR3 with LiSn(CH2C6H5)3LiSn(CH2C6H5)3 reacts with NiCl2 · 2 P(n-C4H9)3 in tetrahydrofuran forming benzyl nickel chloride, which could be isolated in form of the bipyridyl complex C6H5CH2-NiCl · dipy. NiCl2 · 2 P(C6H5)3 and CoCl2 · 2 P(C6H5)3 are reduced to complexes of the formula MCl · 2 P(C6H5)3 · 3 THF (M = Ni, Co).
    Notes: LiSn(CH2C6H5)3 reagiert mit NiCl2 · 2 P(n-C4H9)3 in Tetrahydrofuran zu Benzylnickelchlorid, das als Dipyridylkomplex isoliert werden konnte. Bei Einsatz von NiCl2 · 2 P(C6H5)3 und CoCl2 · 2 P(C6H5)3 erfolgt dagegen eine Reduktion zu Komplexen der Zusammensetzung MCl · 2 P(C6H5)3 · 3 THF (M = Ni, Co).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764250209
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