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  • 1
    Electronic Resource
    Electronic Resource
    Selected ion monitoring determination of mono- and bifunctional amines by using phosphorus-containing derivativesPresented in parts at the 17th International Symposium on ‘Advances in Chromatography’, Las Vegas, Nevada, USA (1982). (1983)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 10 (1983), S. 175-182 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Numerous monofunctional amines have been reacted with dimethylthiophosphinic chloride to form stable derivatives. Their good gas chromatographic properties and abundant molecular ions afforded highly sensitive and specific detection by selected ion monitoring (SIM) down to the picogram level. Based upon this derivatization procedure, new methods for the determination of aniline in serum and urine by SIM were developed. The minimum detectable concentration of aniline was 500 pg ml-1. Linear response curves were obtained from 1.5 to 150 ng ml-1 using (2H5)aniline as the internal standard. Specific derivatization of a series of bifunctional amines was achieved with methyldichlorophosphine and sulfur resulting in the formation of stable phospholidine-thiones. These derivatives chromatograph well on nonpolar stationary phases, and their mass spectra exhibit abundant molecular ions. This derivatization reaction was applied to the quantification of ephedrine from urine and serum by SIM with (2H2)ephedrine as the internal standard. The detection limit of the method was 1 ng ml-1. The linearity was established in the range from 10 to 160 ng ml-1.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200100312
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  • 2
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XXXVII. Zur Existenz von 1-Norbornylverbindungen des Wolframs und Molybdäns (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 50-54 
    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. XXXVII. About the Existence of 1-Norbornyl Compounds of Tungsten and MolybdenumReactions of WCl6, WCl4, WO2Cl2, WOCl4, MoCl5, and MoO2(acac)2 with 1-Norbornyl lithium (1-NorLi1)) are described. From WCl6 and WCl4 [(1-Nor)2W]n is formed, whereas in dependence of the solvent WO2Cl2 and WOCl4 are transformed into the complexes Li2[1-NorWOCl4] · THF, Li[WOCl4], Li[WO2Cl2], and Li2[WO2Cl2]. MoCl5 and MoO2(acac)2 are reduced with formation of Li[MoCl5], Li[MoO2(acac)2] and Li2[MoO2(acac)2].  -  Stable (1-Nor)4M-derivatives of molybdenum and tungsten, comparable those of 3d-metals (M = Ti—Co) seem not to exist.
    Notes: Es wird über Reaktionen von WCl6, WCl4, WO2Cl2, WOCl4, MoCl5 und MoO2(acac)2) mit 1-Norbornyllithium (1-NorLi1)) berichtet. Ausgehend von WCl6 und WCl4 wird [(1-Nor)2W]n gebildet, während WO2Cl2 und WOCl4 je nach Lösungsmittel Komplexe der Formeln Li2[1-NorWOCl4] · THF, Li[WOCl4], Li[WO2Cl2] und Li2[WO2Cl2] ergeben. MoCl5 und MoO2(acac)2 werden zu Li[MoCl5], Li[MoO2(acac)2] und Li2[MoO2(acac)2] reduziert. - Den stabilen (1-Nor)4M-Derivaten der 3d-Metalle (M = Ti—Co) vergleichbare Verbindungen des Molybdäns und Wolframs scheinen nicht zu existieren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845080108
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  • 3
    Electronic Resource
    Electronic Resource
    Rapid and simple direct determination of porphyrins in urine by ion-pair reversed-phase high performance liquid chromatography (1980)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 3 (1980), S. 85-86 
    Details
    ISSN: 0935-6304
    Keywords: Liquid chromatography, HPLC ; Ion-pair reversed-phase ; Free porphyrin carboxylic acids in urine, complete separation ; Quantitation within 4.4-5.4% precision ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240030206
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  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XXX. Synthese und Charakterisierung von Nitrobenzylnickel-Verbindungen (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 177-184 
    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. XXX. Synthesis and Characterization of Nitrobenzyl Nickel Compounds(C2H5)2Ni · dipy reacts with benzyl chlorides forming complexes of the type RNiCl · dipy. In this way nitro groups containing thermally stable organonickel compounds can be obtained, which cannot be achieved by means of organolithiiim or Grignard reagents. - In a similar way (C2H5)Ni · dipy reacts with to form · dipy.The composition of the compounds achieved was proved by analysis, by characteristic reactions, magnetic moments, and in part by their IR and M spectra.
    Notes: (C2H5)2Ni · dipy reagiert mit Benzylchloriden zu Benzylnickelchlorid-Komplexen des Typs RNiCl · dipy. Auf diesem Wege sind auch Nitrogruppen enthaltende thermisch stabile Organonickelverbindungen zugängig, die mittels Organolithium-oder Grignardverbindungen nicht erhalten werden können. - Auf analoge Weise reagiert (C2H5)2Ni · dipy mit zu · dipy.Die Zusammensetzung der erhaltenen Verbindungen wurde analytisch, durch die magnetischen Momente sowie IR-Daten und M-Spektren und durch charakteristische Reaktionen gesichert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804620120
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von übergangsmetallen. XXXI. Darstellung und Eigenschaften von Benzylmangannitrosyl, C6H5CH2Mn(NO) (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 479 (1981), S. 143-146 
    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. XXXI. Preparation and Properties of Benzyl Manganese Nitrosyl, C6H5CH2Mn(NO)(C6H5CH2)2Mn reacts with NO with formation of dibenzyl and C6H5CH2Mn(NO), which contains the manganese in the valence state 0. The manganese compound was characterized by elementary analysis, molecular weight, magnetic moment, ir-spectrum and the course of the thermal decomposition.
    Notes: (C6H6CH2)2Mn reagiert mit NO zu C6H5CH2Mn(NO), einer Mangan(0)-Verbindung, und Dibenzyl. Die Manganverbindung wurde eingehend charakterisiert durch Elementaranalysen, Bestimmung der Molmasse und des magnetischen Momentes, das IR-Spektrum und durch den Verlauf der thermischen Zersetzung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814790817
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XXXIV. Darstellung und Eigenschaften von 3-(N,N-Dialkylamino)-propylmangan-Verbindungen (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 498 (1983), S. 115-120 
    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. XXXIV. Synthesis and Properties of 3-(N,N-dialkylamino)propyl Manganese CompoundsMnCl2 reacts with lithium organyls of the type R2N(CH2)3Li with formation of definite organomanganese complexes. The pure [(CH3)2N(CH2)3]2Mn, [(C2H5)2N(CH2)3]2Mn, [(CH2)5N(CH2)3]2Mn and the complexes [(CH3)2N(CH2)3]2Mn · LiCl and Li{Mn[(CH2)3N(CH3)2]3} · 1,5 THF were isolated.[(CH3)2N(CH2)3]2Mn · 2 Li(acac) was obtained as a result of reactions of Mn(acac)2 and Mn(acac)3 with the corresponding lithium organyl.The σ-organomanganese(II) derivatives were characterized in detail by elementary analysis, molecular weight determination, ESR- and IR-spectra, conductivity measurements and the magnetic moments.
    Notes: MnCl2 reagiert mit Lithiumorganylen des Typs R2N(CH2)3Li zu definierten Organomanganverbindungen. In reiner Form wurden [(CH3)2N(CH2)3]2Mn, [(C2H5)2N(CH2)3]2Mn, [(CH2)5N(CH2)3]2Mn und Komplexe der Zusammensetzung [(CH3)2N(CH2)3]2Mn · LiCl und Li{Mn-[(CH2)3N(CH3)2]3} · 1,5 THF isoliert. Ausgehend von Mn(acac)2 und Mn(acac)3 wurde [(CH3)2N(CH2)3]2Mn · 2 Li(acac) erhalten.Die nähere Charakterisierung der σ-Organomangan(II)-Derivate erfolgt durch Elementaranalysen, kryoskopische Molmassebestimmungen, ESR- und IR-Untersuchungen, Leitfähigkeitsmessungen und Ermittlung der magnetischen Momente.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19834980315
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  • 7
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XXXVIII. Reaktion von Dibenzylmangan mit Sauerstoff (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 89-94 
    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. XXXVIII. Reactions of Dibenzyl Manganese with Oxygene(C6H5CH2)2Mn · C4H8O2 reacts with oxygen forming an unstable deep violet compound which changes in a stable unsoluble yellow peroxide of the formula C6H5CH2MnO—OMnCH2C6 H5. With excess oxygen a polynuclear complex of 3 valent manganese is formed with the composition Mn4O4(OH)4(OCHC6H5)2.The compounds isolated were characterized by the products of hydrolyses and thermolyses, anaerobic reaction with iodine, magnetic moments, i.r. and e.s.r. spectra.
    Notes: Dibenzylmangan-1,4-dioxan reagiert mit Sauerstoff zu einer tiefvioletten instabilen Substanz. Diese wandelt sich in ein stabiles gelbes, schwerlösliches Peroxid der Formel C6H5CH2MnO—OMnCH2C6H5 um. Mit überschüssigem Sauerstoff entsteht daraus ein Mehrkernkomplex des 3wertigen Mangans der Zusammensetzung Mn4O4(OH)4(OCHC6H5)2.Die isolierten Verbindungen wurden durch ihre Hydrolyse- und Thermolyseprodukte, anaerobe Iodierung, magnetischen Momente sowie IR- und ESR-Spektren näher charakterisiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845110411
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