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  • 1
    Electronic Resource
    Electronic Resource
    Axial-ligation and macrocyclization of novel (E,E)-dioximes of nickel(II) palladium(II), platinum(II) and cobalt(III) (1995)
    Springer
    Transition metal chemistry 20 (1995), S. 234-238 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The synthesis and characterization of new NiII, PdII, PtII and CoIII complexes, with the BF inf2 sup+ -bridged,bis(α-di-oximato) ligands are described. The initially formed six-coordinate hydrogen-bonded macrocycles, were used as metal templates to prepare the corresponding BF inf2 sup+ - capped macrocycles. The complexes were characterized by1H-n.m.r. and i.r. spectroscopy, and by elemental analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00143483
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis and Characterization of Mono- and Trinuclear Complexes of BF2+ Bridged Macrocycles (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 654-658 
    Details
    ISSN: 0044-2313
    Keywords: Cobalt complexes ; BF2+ bridged macrocycles ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Charakterisierung von Ein- und Dreikernkomplexen von BF2+ -verbrückten MacrocyclenDibenzo[e,k]-2,3-bis(hydroxyimino)-1,4-dithia-7,10-diaza-2,3,8,9-tetrahydrocyclododecin (H2L) ist aus 1,2-Bis(o-mercaptoanilino)ethan (4) und (E,E)-Dichlorglyoxim dargestellt worden. Ein Einkernkomplex mit einem Metall: Ligand-Verhältnis von 1:2 ist von Cobalt(III) isoliert worden. Der Cobalt(III)-Komplex von H2L ist mit L′ = 2,6-Lutidin und einem weiteren Chlorion als axialen Liganden dargestellt worden. Ein weiterer Cobalt-Komplex, der BF2+-Brücken enthält, wurde mit dem Bis(E,E)-Liganden erhalten. Von diesem Cobalt(III)-Komplex wurde ein Dreikernkomplex durch Reaktion mit Pd[bis(benzonitril)]Cl2 erhalten. Die Strukturen dieser Komplexe wurden aus analytischen, 1H-, 13C-NMR, IR und massenspektrometrischen Daten geschlossen.
    Notes: Dibenzo[e,k]-2,3-bis(hydroxyimino)-1,4-dithia-7,10-diaza-2,3,8,9-tetrahydrocyclododecine (H2L) has been prepared from 1,2-bis(o-mercaptoanilino) ethane (4) and (E,E)-dichloroglyoxime. A mononuclear complex with a metal: ligand ratio of 1:2 has been isolated for cobalt(III). The CoIII complex of H2L has been prepared with L′ = 2,6-lutidine, and with a chlorine ion as axial ligands. In addition to that, the synthesis of a new cobalt complex which contains BF2+ bridges is achieved with the bis(E,E)-dioxime ligand. The trinuclear complex of this CoIII complex has been obtained by the reaction of BF2+ bridged CoIII complex with Pd[bis(benzonitrile)]Cl2. The structures of these complexes and (E,E)-dioxime were identified by using elemental analysis, 1H and 13C-NMR, IR and MS spectral data.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210425
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  • 3
    Electronic Resource
    Electronic Resource
    The First Example of Dinuclear Co(III) Complexes Containing Crown Ether Moieties (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1243-1246 
    Details
    ISSN: 0044-2313
    Keywords: Cobalt complexes ; BF2+-bridged macrocycle ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Das erste Beispiel für zweikernige, Kronenether-enthaltende Cobalt(III)-KomplexeNeue zweikernige, oktaedrische Cobalt(III)-Komplexe wurden dargestellt und ihre Eignung zur Reaktion mit 4,4′-Trimethylendipyridin untersucht. 1H- und 13C-NMR, IR und analytische Daten belegen, daß diese Cobalt(III)-Komplexe zweikernig sind.
    Notes: The new dinuclear, octahedral cobalt(III) complexes have been synthesized and then their ability to interact with 4,4′-trimethylene dipyridine investigated. The 1H and 13C-NMR, IR and elemental analysis data indicated that the cobalt(III) complexes are dinuclear.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210723
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis and Metal Complex Formation of Nitrogen-Oxygen Donor Macrocyclic Ligands (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 959-964 
    Details
    ISSN: 0044-2313
    Keywords: Macrocyclic N,O-Donor Ligands ; Metal Complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Metallkomplexbildung von makrozyklischen Stickstoff-Sauerstoff-DonorligandenDie Reduktion von 2,3:9,10-Dibenzo-5,12-diaza-1,8-dioxacyclotetradecan-5,11-dien(1) mit Natriumborhydrid in Ethanol ergibt 2,3:9,10-Dibenzo-5,12-diaza-1,8-dioxacyclotetradecan(2) in guter Ausbeute. Der makrozyklische Ligand 2,3:9,10-Dibenzo-5,12-diaza-1,8-dioxacyclotetradecan-N,N′-diessigsäure(3) wurde synthetisiert und analysiert.Die Reaktion von 2 mit einem Überschuß von Acrylnitril ergibt 2,3:9,10-Dibenzo-5,12-diaza-1,8-dioxacyclotetradecan-N,N′-di(2-cyanethyl) (4). Verschiedene Komplexe von diesen Liganden mit NiII, CuII und CoII wurden dargestellt und untersucht. Die Strukturen dieser Komplexe werden auf Grund von elementaranalytischen Daten, 1H, 13C-NMR, IR-, UV-VIS, magnetischen- und Leitfähigkeitsdaten vorgeschlagen.
    Notes: Reduction of 2,3:9,10-dibenzo-5,12-diaza-1,8-dioxacylotetradecane-5,11-diene(1) with sodium borohydride in ethanol generates 2,3:9,10-dibenzo-5,12-diaza-1,8-dioxacyclotetradecane(2) in high yield. The macrocyclic ligand 2,3:9,10-dibenzo-5,12-diaza-1,8-dioxacyclotetradecane-N,N′-diacetic acid (3) has been synthesized and characterized. In addition, reaction of (2) with an excess of acrylonitrile gives 2,3:9,10-dibenzo-5,12-diaza-1,8-dioxacyclotetradecane-N,N′-di(2-cyanoethyl) (4). Several new complexes of these ligands with nickel(II), copper(II) and cobalt(II) have been prepared and identified. The structures of these complexes are proposed on the basis of elemental analysis, 1H, 13C-NMR, IR, UV-VIS spectra, magnetic susceptibility and conductivity data.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200536
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of the free ligand 5,6:13,14-dibenzo-9,10-benzo(15-crown-5)-2,3-bis(hydroxyimino)-7,12-dioxo-1,4,8,11-tetraazacyclotetradecane and its mono and tri nuclear complexes (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1237-1242 
    Details
    ISSN: 0044-2313
    Keywords: Cobalt complexes ; BF2+-bridged macrocycles ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Charakterisierung des freien Liganden 5,6:13,14-Dibenzo-9,10-benzo(15-crown-5)-2,3-bis(hydroxyimino)-7,12-dioxo-1,4,8,11-tetraazacyclotetradecan und seines Mono- und DreikernkomplexesDas neue (E,E)-Dioxim 5,6:13,14-Dibenzo-9,10-benzo(15-Krone-5)-2,3-bis(hydroxyimino)-7,12-dioxo-1,4,8,11-tetraazacyclotetradecan (H2L) wurde durch Reaktion von 4′,5′-Diaminobenzo(15-Krone-5) mit N,N′-Bis(2-carbomethoxyphenyl)diaminoglyoxim (1) dargestellt. Bei einem Metall/Ligand-Verhältnis von 1:2 wurden nur einkernige CoIII-bzw. RuII-Komplexe isoliert. Ein über BF2+ verbrückter CoIII-Komplex wird mit einem H—CoIII-Komplex und BF3 · (C2H5)2O erhalten. Die Reaktion des BF2-verbrückten Cobalt(III)-Komplexes mit Bis(benzonitril)palladium(II)-chlorid ergibt einen Dreikernkomplex. Die Strukturen des Dioxims und seiner Komplexe werden aufgrund von elementaranalytischen, 1H-, 13C-NMR, IR und massenspektrometrischer Daten gefolgert.
    Notes: The novel (E,E)-dioxime 5,6:13,14-dibenzo-9,10-benzo(15-crown-5)-2,3-bis(hydroxyimino)-7,12-dioxo-1,4,8,11-tetraazacyclotetradecane (H2L) has been synthesized by the reaction of 4′,5′-diaminobenzo(15-crown-5) with N,N′-bis(2-carbomethoxyphenyl)diaminoglyoxime (1). Only mononuclear CoIII and RuII complexes with a metal/ligand ratio of 1:2 have been isolated. The cobalt(III) complex bridged with BF2+ is achieved with H-bonded cobalt(III) complex and borontrifluoride ethyl ether complex. The reaction of BF2 bridged cobalt(III) complex with bis(benzonitril)palladium(II) chloride gives a trinuclear complex. The structures of dioxime and its complexes are proposed according to elemental analyses, 1H and 13C-NMR, IR and mass spectral data.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210722
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