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  • 1975-1979  (16)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 17 (1978), S. 1665-1667 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 22 (1977), S. 177-181 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The clinical significance of lactose malabsorption and the individual sensitivity to lactose were investigated in 20 patients with verified lactose malabsorption. Thirteen patients were relieved of all symptoms while seven improved only on a lactose-free diet. The healthy patients did not experience any symptoms following provocation with lactose-free milk but following provocation with increasing amounts of lactose, the tendency to diarrhea and abdominal discomfort increased considerably. Three patients experienced discomfort after provocation with only 5 g lactose. On provocation with increasing amounts of lactose the seven patients who had not recovered also developed increased abdominal discomfort but none of them developed increased tendency to diarrhea. It is concluded that, in addition to lactose malabsorption, these patients must suffer from irritable colon with tendency to constipation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 437 (1977), S. 299-303 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosyl Metal Coordination Compounds. I. Synthesis and Properties of Iron and Cobalt Complexes of the Type Complex compounds of the type , with M = Fe, Co and thiodibenzoylmethanate (TDBM) and N-(morpholinothiocarbamoyl)-benzamidate (MTBA) have been synthesized. It has been established by means of molecular weigths measurements, IR and ESCA spectroscopy, and magnetic investigations that the iron complex 1 is a sulfur bridged dimeric molecule [Fe(TDBM)2NO]2, where each iron atom has the coordination number six. The cobalt complexes Co(TDBM)2NO, 2, and Co(MTBA)2NO, 3, are both monomeric with square pyramidal structures. The ESCA spectra are in each case in accordance with the formal oxidation number three of the central metal and a negative charged nitrosyl ligand.
    Notes: Komplexverbindungen des Typs , mit M = Fe, Co und Thiodibenzoylmethanat (TDBM) und N-(Morpholinothiocarbamoyl)-benzamidat (MTBA), wurden synthetisiert. Mittels Molmassebestimmung, IR- und ESCA-Spektroskopie sowie magnetochemischen Untersuchungen wurde nachgewiesen, daß der Eisenkomplex 1 als schwefelverbrückter Zweikern-komplex [Fe(TDBM)2NO]2 vorliegt, in dem jedes Eisenatom sechsfach koordiniert ist. Die Kobalt-komplexe Co(TDBM)2NO, 2, und Co(MTBA)2NO, 3, liegen monomer in quadratisch-pyramidaler Struktur vor. In allen Fällen weisen die ESCA-Spektren formal dreiwertige Zentralmetalle mit negativ geladenem Nitrosylliganden aus.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: d-N.M.R. Studies of Hindered Rotation on N—C(X) Bond Increment. VIII. Metal Complexes of 1,1-Diethyl-3-benzoylthio- and selenoureaThe coordination of 1,1-Diethyl-3-benzoylthiourea (debtu) and 1,1-Diethyl-3-benzoylselenourea (debsu) to a metal ion leads both with subgroup elements (Ni(II), Pd(II), Co(III), Zn(II), Cu(I)) and with main group elements (Pb(II), Tl(I)) to an increase of the free enthalpy of activation of the rotational process about the terminal N—C(X) bond. The order of the increase is with debtu: Ni(II) 〉 Pb(II) 〉 Pd(II) 〉 Co(III) 〉 Tl(I) and with debsu: Ni(II) 〉 Zn(II) 〉 Pd(II) 〉 Co(III). A decrease of the barrier of rotation was observed with Tl(debsu) only, which is dimeric in benzene solution. The characteristic IR-data of the ligand debtu and its Pd(II)-, Ni(II)-, and Tl(I)-complexes, and of the Cu(debtu)3Cl complex are given. The results are discussed.
    Notes: Die Koordination der Liganden 1,1-Diäthyl-3-benzoylthioharnstoff (debtu) und 1,1-Diäthyl-3-benzoylselenoharnstoff (debsu) an ein Metallatom führt sowohl bei Nebengruppenelementen (Ni(II), Pd(II), Co(III), Zn(II), Cu(I)) als auch bei Hauptgruppenelementen (Pb(II), Tl(I)) zur Erhöhung der freien Aktivierungsenthalpie ΔGc≠ der Rotation um die N—C(X)-Bindung. Die Reihenfolge der Erhöhung ist beim debtu: Ni(II) 〉 Pb(II) 〉 Pd(II) 〉 Co(III) 〉 Tl(I) und beim debsu: Ni(II) 〉 Zn(II) 〉 Pd(II) 〉 Co(III). Nur beim Tl(debsu) beobachtet man eine Erniedrigung der Rotationsbarriere. Es liegt in benzolischer Lösung dimer vor. Die charakteristischen IR-Daten des Liganden debtu und seiner Pd(II)-, Ni(II)- und Tl(I)-Komplexe, sowie die des Cu(debtu)3Cl werden angegeben. Die erhaltenen Ergebnisse werden diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 432 (1977), S. 275-279 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: ESCA Investigations on Heavy Metal Chelates of Substituted N-acyl-thio- and -selenoureasN-acylthio- and -selenoureas give as 1,3-dichalcogenketones stable chelates of heavy metals, which are easy to synthesize. From the measurement of the chemical shifts of the N1s-, S2p- or Se3p- and metal nl-ESCA lines follows, that the bonding between the ligand and the central atom involves a σ-bond of oxygen and a donor bond of sulfur and selenium, with a decrease of the electronic density on S or Se, resp. The appearence of two N1s-signals can be explained by deprotonation, which is necessary for the formation of the complex.
    Notes: Die N-Acyl-thio- und -selenoharnstoffe bilden als 1,3-Dichalkogenketone relativ einfach zugängliche stabile Schwermetallchelate. Aus der Messung der chemischen Verschiebung der N 1s-, S 2p-, bzw. Se 3p- und Schwermetall nl-ESCA-Linien kann man den Schluß ziehen, daß die σ-Bindung des Zentralatoms über den Sauerstoff erfolgt. Die S- und Se-Atome gehen eine dative Bindung ein, wobei sich ihre Elektronendichte erniedrigt. Das Auftreten zweier N-Signale läßt sich durch die bei der Komplexbildung erforderliche Deprotonierung verstehen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Chemistry of Acylthioureas. III. Synthesis of 1,3,5-Thiadiazine-2-thiones by the Reaction of Acylisothiocyanates with AminesIn course of synthesis of benzoyl-thioureas from benzoyl-isothiocyanate and sec. amines some new 6-amino-4-phenyl-1,3,5-thiadiazine-2-thione 5 are prepared and characterized chemically and spectroscopically.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 317 (1975), S. 265-272 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Synthese α-unsubstituierter dimerer β-Mercaptozimtaldehyde 1 a - d, zugänglich über die β-Chlorvinylaldehyde, sowie daraus abgeleiteter Azomethine 2 a - f wird beschrieben. Die dargestellten Verbindungen und einige ihrer diamagnetischen Nickelchelate werden u. a. IR-, UV/VIS-, NMR- und massenspektroskopisch charakterisiert. Eine Template-Reaktion mit o-Phenylendiamin am Nickelchelat des p-Chlor-β-mercaptozimtaldehyds 3 b ergibt ein makrocyclisches Chelat system des Typs NiN2S2.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 317 (1975), S. 829-839 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die 1,1-Dialkyl-3-benzoyl-thioharnstoffe 1 erweisen sich als ausgezeichnete Chelatbildner mit Übergangsmetallionen.Die Chelate mit Nickel(II), Kupfer(II), Kobalt(III) und Palladium (II) werden charakterisiert. Für den Kupfer(II)-Komplex von 1,1-Diäthyl-3-benzoylthioharnstoff 2d wird ESR-spektroskopisch eine CuO2S2-Koordination mit rhombischer Symmetrie bewiesen. Die Chelatkomplexe von 1 mit Nickel(II) und Kobalt(III) verhalten sich magnetisch anormal. Die Nickel(II)-chelate bilden magnetisch normale hellgrüne Bispyridinaddukte 4.In einigen Fällen wurden kristalline Addukte mit einem Mol Chloroform pro Mol Komplex isoliert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 434 (1977), S. 16-28 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Chelates with N-Benzoylthiobenzamide, N-Benzoylbenzamide, and N-ThiobenzoylbenzamidineN-Benzoylthiobenzamide, 1, N-benzoylbenzamide, 2, and N-thiobenzoylbenzamidine-hydrochloride, 3, yield neutral complexes with numerous metal ions which have been characterized by i.r., electronic, and mass spectra as well as magnetic measurements. Compared with the CH2-analogous monothiodibenzoylmethane, H-MTDBM, the isosteric NH group in 1 preferentially influences the properties of the free ligand, e. g. tautomerism, configuration, acidity. ESCA data are used for the discussion of structures and bonding situations of the ligands and its metal complexes.
    Notes: N-Benzoylthiobenzamid, 1, N-Benzoylbenzamid, 2, und N-Thiobenzoyl-benzamidinhydrochlorid, 3, geben mit zahlreichen Metallionen Neutralkomplexe, die durch IR-, UV/VIS- und Massenspektren sowie magnetische Messungen charakterisiert werden. Verglichen mit dem CH2-analogen Monothiodibenzoylmethan, H-MTDBM, wirkt sich die isostere NH-Gruppe in 1 vorwiegend auf die Eigenschaften des freien Liganden (Tautomerie, Konfiguration, Azidität) aus. ESCA-Spektren werden zur Struktur- und Bindungsinterpretation bei Liganden und Metallkomplexen herangezogen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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