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  • 1
    Electronic Resource
    Electronic Resource
    Nucleophile Additionen an Cyclopentadienyl-cyclohexadienyl-kobalt-Kation (1970)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 3615-3618 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Addition of Nucleophiles to Cyclopentadienyl(cyclohexadienyl)cobalt CationCyclopentadienyl(cyclohexadienyl)cobalt salts [Co(C5H5) (C6H7)]X (X = I, PF6) at room temperature readily add nucleophiles to form 5-exo-substituted derivatives of cyclopenta-dienyl(cyclohexadiene)cobalt Co(C5H5)(C6H7Y)(Y = CH(CO2CH3)2, N(CH3)2, N[C2H4]2O, OCH3).
    Notes: Cyclopentadienyl-cyclohexadienyl-kobalt-Salze [Co(C5H5)(C6H7)]X (X = J, PF6) addieren bei Raumtemperatur Nucleophile unter Bildung von 5-exo-substituierten Derivaten des Cyclopentadienyl-cyclohexadien-kobalts Co(C5H5)(C6H7Y) (Y = CH(CO2CH3(2) N(CH3)2, N[C2H4]2O, OCH3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19701031124
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  • 2
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, VIII: Ein neuer Weg zu Alkalimetallborinaten. Synthesen von Ruthenium-, Osmium-, Rhodium- und Platin-Verbindungen mit Borinat-Liganden (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 2382-2388 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, VIII: A New Route to Alkalimetal Borinates. Syntheses of Ruthenium, Osmium, Rhodium, and Platinum Compounds with Borinate LigandsDegradation of bis(borinato)cobalt complexes Co(C5H5B — R)2(R = C6H5, CH3) with alkalimetal cyanides MCN (M = Na, K) yields alkalimetal borinates M[C5H5B — R]. These are versatile synthetic intermediates as demonstrated by the syntheses of Ru(C5H5B — R)2 (R = C6H5, CH3), Os(C5H5B — C6H5)2, Rh(1,5-C8H12)(C5H5B — R), and Pt(CH3)3(C5H5B — C6H5).
    Notes: Der Abbau von Bis(borinato)kobalt-Komplexen Co(C5H5B — R)2 (R = C6H5, CH3) mit Alkalimetallcyaniden MCN (M = Na, K) liefert Alkalimetallborinate M[C5H5B — R]. Diese sind vielseitige Synthesezwischenprodukte, wie mit der Darstellung von Ru (C5H5B — R)2 (R = C6H5,CH3), Os(C5H5B — C6H5)2, Rh(1,5-C8H12)(C5H5B — R) und Pt(CH3)3((C5H5B — C6H5) gezeigt wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090704
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  • 3
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, IX. Paramagnetische Chrom-Komplexe des 1-Methyl- und 1-Phenylborinat-Ions (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 816-819 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, IX. Paramagnetic Chromium Complexes of 1-Methylborinate and 1-Phenylborinate IonsPotassium borinates, K[C5H5B-R] (R = CH3, C6H5), react with CrCl3 or CrCl2·THF to give paramagnetic bis(borinato)chromium complexes, Cr(C5H5B-R)2 (R = CH3, C6H5). For these a sandwich structure with a 16-electron valence shell is proposed.
    Notes: Durch Umsetzung von Kaliumborinaten, K[C5H5B-R] (R = CH3, C6H5), mit CrCl3 oder CrCl2·THF werden paramagnetische Bis(borinato)chrom-Komplexe, Cr(C5H5B-R)2 (R = CH3, C6H5), erhalten. Für diese wird eine Sandwich-Struktur mit einer 16-Elektronen-Valenzschale vorgeschlagen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100303
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  • 4
    Electronic Resource
    Electronic Resource
    Nachbargruppen-Beteiligung und Ringerweiterung bei Heterolysen in der Tricarbonyl-cyclopentadien-eisen-Reihe (1971)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 2781-2785 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neighbouring Group Participation and Ring Expansion in the Heterolyses of Tricarbonylcyclopentadieneiron DerivativesHeterolysis of tricarbonyl[5-endo-methyl-5-exo-(tosyloxymethyl)cyclopentadiene]iron (3a) in (CH3CO)2O/aqueous HBF4 at 30° leads to the tricarbonyl(1-methylcyclohexadienyl)iron cation resulting from neighbouring group participation of the cyclopentadiene iron moiety and ring expansion. The cation is isolated as hexafluorophosphate 4 in 80% yield. In contrast, the geometrical isomer tricarbonyl[5-exo-methyl-5-endo-(tosyloxymethyl)cyclopentadiene]iron (3b) is slowly decomposed under the same conditions producing CO and Fe2+ salt; no complex product could be detected.
    Notes: Tricarbonyl-[5-endo-methyl-5-exo-tosyloxymethyl-cyclopentadien]-eisen (3a) heterolysiert in (CH3CO)2O/wäßr. HBF4 bei 30° unter Nachbargruppen-Beteiligung der Cyclopentadien-eisen-Gruppierung und Ringerweiterung. Das gebildete Tricarbonyl-[1-methyl-cyclohexadienyl]-eisen-Kation wird als Hexafluorophosphat 4 mit 80% Ausb. isoliert. Im Gegensatz dazu wird das zu 3a geometrisch isomere Tricarbonyl-[5-exo-methyl-5-endo-tosyloxymethyl-cyclopentadien]-eisen (3b) im gleichen Medium langsam zersetzt unter Bildung von CO und Fe2+-Salz; komplexe Produkte konnten nicht gefunden werden.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19711040915
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  • 5
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, I Kobalt-Komplexe des 1-Phenyl- und 1-Methylborinat-Ions1) (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3413-3423 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, ICobalt Complexes of 1-Phenylborinate and 1-Methylborinate Ions1)Derivatives of the unknown borabenzene (C5H5B, borin) become accessible by the reaction of Co(C5H5)2 with organoboron dihalides (C6H5BCl2, C6H5BBr2, CH3BBr2). Uncharged paramagnetic complexes Co(C5H5)(C5H5BR) and Co(C5H5BR)2 as well as diamagnetic cations [Co(C5H5)(C5H5BR)]- (R = C6H5, CH3) are described. In these novel transitionmetal π-complexes borinate ions [C5H5BR]- are bound to the metal as benzenoid hexahapto-ligands.
    Notes: Ein Weg zu Derivaten des unbekannten Borabenzols (C5H5B, Borin) wird durch die Reaktion von Co(C5H5)2 mit Organylbordihalogeniden (C6H5BCl2, C6H5BBr2, CH3BBr2) erschlossen. Paramagnetische Neutralkörper Co(C5H5)(C5H5BR) und Co(C5H5BR)2 sowie diamagnetische Kationen [Co(C5H5)(C5H5BR)]- (R = C6H5, CH3) werden beschrieben. In diesen Übergangsmetall-π-Komplexen neuen Typs sind Borinat-Ionen [C5H5BR]- als benzolähnliche Hexahapto-Liganden an das Metall gebunden.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721051029
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  • 6
    Electronic Resource
    Electronic Resource
    (η-1,5-Cyclooctadien)(1-4-η-1-phenyl-1-borato-1,3-cycloheptadien)rhodium  -  ein Komplex mit einem neuartigen B-C-Liganden (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 1171-1174 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (η-1,5-Cyclooctadiene)(1-4-η-1-phenyl-1-borato-1,3-cycloheptadiene)rhodium - a Complex with a Novel B-C LigandThe title complex 6 which represents the first example of the novel 1-4-η-1-borato-1,3-butadiene type structure is obtained by reaction of 1-phenyl-4,5-dihydro-1H-borepin with LiC(CH3)3 and [Rh(1,5-C8H12)Cl]2. The constitution of this 16-electron complex and the presence of a rhodiumboron bond is proved by spectroscopic methods.
    Notes: Der Titelkomplex 6, welcher das erste Beispiel des neuartigen 1-4-η-1-Borato-1,3-butadien-Strukturtyps darstellt, wird durch Umsetzung von 1-Phenyl-4,5-dihydro-1H-borepin mit LiC(CH3)3 und [Rh(1,5-C8H12)Cl]2 erhalten. Die Konstitution dieses 16-Elektronen-Komplexes und das Vorliegen einer Bor-Rhodium-Bindung wird mit spektroskopischen Methoden bewiesen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100341
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  • 7
    Electronic Resource
    Electronic Resource
    Derivate des Borabenzols, X. Bildung von Borinato-Liganden aus einem 1-Bora-2,5-cyclohexadien-Derivat in Komplexen von Mangan, Rhenium und Eisen (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 1167-1170 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borabenzene Derivatives, X. Formation of Borinato Ligands from a 1-Bora-2,5-cyclohexadiene Derivative in Complexes of Manganese, Rhenium, and IronBorinato complexes LMn(CO)3, LRe(CO)3, and FeL2 (3-5), where L is the 4-methyl-1-phenylborinato ligand, are obtained by thermal reaction of 4,4-dimethyl-1-pheny-1-bora-2,5-cyclohexadiene (1) with Mn2 (CO)10 and Re2(CO)10 and by thermolysis of tricarbonyl(4,4-dimethyl-1-phenyl-1-bora-2,5-cyclohexadiene)iron (2).
    Notes: Borinato-Komplexe LMn(CO)3, LRe(CO)3 und FeL2 (3-5), wo L der 4-Methyl-1-phenylborinato-Ligand ist, werden durch thermische Reaktion von 4,4-Dimethyl-1-phenyl-1 bora-2,5-cyclohexadien (1) mit Mn2(CO)10 und Re2(CO)10 und durch Thermolyse von Tricarbonyl-(4,4-dimethyl-1-phenyl-1-bora-2,5-cyclohexadien)eisen (2) erhalten.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100340
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  • 8
    Electronic Resource
    Electronic Resource
    Acetylen-Komplexe des Molybdänocens: Synthese durch Ligandensubstitution an Bis(η5-cyclopentadienyl)[(Z)-stilben]-molybdän, einem Molybdänocen-Derivat mit substitutionslabilem Olefin (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 3112-3122 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acetylene Complexes of Molybdenocene: Synthesis via Ligand Substitution Reactions of Bis(η5-cyclopentadienyl)[(Z)-stilbene]molybdenum, a Molybdenocene Derivative with Substitution-labile OlefinThe reinvestigation of the reaction of molybdenocene dihydride, Mo(C5H5)2H2 (1), with diphenylacetylene led to the isolation and characterization of the (Z)-stilbene complex of molybdenocene, Mo(C5H5)2[(Z)-C6H5CH=CHC6H5] (3). The olefin ligand in this complex is found to be rather labile and substitution reactions with various substituted acetylenes RC≡CR′ readily gave the acetylene complexes of molybdenocene, Mo(C5H5)2(RC≡CR′) (2f-cm). The effect of the acetylene substituents R and R′ in these compounds is discussed in terms of their electronic properties.
    Notes: Bei der Wiederholung der Reaktion von Molybdänocendihydrid, Mo(C5H5)2H2 (1), mit Diphenylacetylen konnte das (Z)-Stilben-Addukt des Molybdänocens, Mo(C5H5)2[(Z)-C6H5CH=CHC6H5] (3), isoliert und charakterisiert werden. Der olefinische Ligand in 3 erweist sich als substitutionslabil: Verschiedene substituierte Acetylene RC≡CR′ reagieren mit 3 glatt zu den Acetylen-Komplexen 2f-m des Molybdänocens, Mo(C5H5)2(RC≡CR′). Der Einfluß der Acetylensubstituenten R und R′ in dieser Verbindungsklasse wird im Hinblick auf ihre elektronischen Eigenschaften untersucht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841171011
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  • 9
    Electronic Resource
    Electronic Resource
    Die Reaktion von 3-Borolenen mit terminalen Acetylenen: Ein neuer Zugang zu 2-Borolenen (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 1625-1627 
    Details
    ISSN: 0009-2940
    Keywords: Dihydroboroles ; Acetylenes ; Allyloboration ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Reaction of 3-Borolenes with Terminal Acetylenes: A New Route to 2-Borolenes3-Borolenes (2,5-dihydro-1H-boroles) (1a: R′=H, R=Ph; 1b: R′=H, R=Cy; 1c: R′=Me, R=Ph) readily react with terminal acetylenes R″C≡CH (R″=Bu, tBu, 1-Cyclohexenyl, Ph, ClCH2, BrCH2) to give a variety of 3-substituted 4-vinyl-2-borolenes (2).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230806
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  • 10
    Electronic Resource
    Electronic Resource
    Derivate des Borols, XVI Bis(borol)nickel-Komplexe2) (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 17-23 
    Details
    ISSN: 0009-2940
    Keywords: (Borole)nickel complexes ; Nucleophilic substitution at boron ; 1H-Borole ; Dihydro-1H-borolediide ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatives of Borole, XVI1), - Bis(borole)nickel Complexes2)The dilithium 1-(dialkylamino)dihydroborolediides Li2[C4H4-BNR2] 2a, b: R = Me, Et) react with NiCl2 · DME to give bis(borole)nickel complexes Ni(C4H4BNR2)2. Nucleophilic substitution reactions are used to produce a large variety of derivatives Ni(C4H4BR)2 1 (e.g. R = H, tBu, F, Cl, Br, I, OH, OMe). Treatment of Ni(C4H4BCl)2 (tg) with LiO(CH2)3OLi in THF produces a polymer and a dinuclear complex (μ-{η5:η5-[(CH2)3(OBC4H4)2]}2Ni2 (3) which crystallizes from CH2Cl2 as solvate 3 · CH2Cl2. The complexes 1g and 3 · CH2Cl2 are characterized by X-ray diffraction work. Barriers to internal ring-ring rotation are measured by variable-temperature NMR spectroscopy. The B - H bond of Ni(C4H4BH)2 (1a) is remarkably inert and does not react with H2O or with carboxylic acids in THF at room temperature. With PhCHO slow formation of the benzyloxy compound Ni(C4H4BOCH2Ph)2 (1 m) is observed at 100°C. For typical complexes such as the phenyl derivative 1e cyclic voltammetry in CH2Cl2 reveals an irreversible oxidation at 1.32 and a quasi-reversible reduction at -1.37 V vs. SCE.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240104
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