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  • Chemistry  (122)
  • Inorganic Chemistry  (111)
  • Organic Chemistry  (10)
  • Bis(1, 3-diketonato)cobalt-bisimidazoles  (1)
  • Cobalt (nickel) complexes  (1)
  • [Li(TMED)2][Co(COD)2]  (1)
  • binuclear complexes  (1)
  • Wiley-Blackwell  (122)
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  • Wiley-Blackwell  (122)
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  • 1
    Electronic Resource
    Electronic Resource
    O- und N-alkylsubstituierte 2-(2′-Hydroxyphenyl)-benzimidazole und -1,3,4-oxadiazole als Komplexbildner und Extraktionsmittel für Kupfer-II-ionen (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 708-718 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: O- and N-Alkylsubstituted 2-(2′-Hydroxyphenyl)-benzimidazoles and -1,3,4-Oxadiazoles as Complexing and Extracting Agents for Copper-II-Ions2-(2′-Alkoxyphenyl)-benzimidazoles 1, 1-alkyl-2-(2′-hydroxyphenyl)-benzimidazoles 2, 2-(2′hydroxy-4′-alkoxyphenyl)-benzimidazoles 3, 2-(2′,4′-dialkoxyphenyl)-benzimidazoles 4 and 1-alkyl-2-(2′-hydroxy-5′-nitrophenyl)-benzimidazoles 7 are synthesized by condensation of 2-hydroxybenzoic acid derivatives and o-phenylenediamine or its derivatives. Alkyl chains C4, C8 or C12 are introduced by alkylation before or after the ring closure in order to increase the solubility of the reagent in toluene or n-octane. Furthermore the extraction properties of the benzimidazoles are investigated. Also some new analogous compounds of the benzothiazole and the 1,3,4-oxadiazole series were synthesized.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250505
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  • 2
    Electronic Resource
    Electronic Resource
    Hoyer, E.; Beyer, L.; Dietze, F.; Seifert, W.; Wagler, D.: Säuren und Basen - Lehrprogrammbuch. Aufl., 95 S., Leipzig: VEB Deubscher Verlag f. Grundstoffindustrie 1987.16,- Mark (1989)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 331 (1989), S. 684-684 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19893310421
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  • 3
    Electronic Resource
    Electronic Resource
    Komplexchemisches Verhalten von N-substituierten 2-(o—Hydroxyphenyl)-Δ2-imidazolinen als Metallextraktionsmittel (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 211-224 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Coordinative Behaviour of N-Substituted 2-(Δ2-Imidazolin-2-yl)-phenols as Metal ExtractantsN-Substituted 2-(Δ2-imidazolin-2-yl)-phenols (R4NNOH) are obtained by the reaction of N-alkyl diaminoethane-1, 2 and 2-hydroxybenzoic acid esters. In contrast to many other copper(II) complexes with the donor set N2O22-(A), the species Cu(R4NNO)2(B) are easily soluble in nonpolar solvents. The reason is the monomeric square-planar structure of B, which differs from the polymeric distorted octahedral structure of A.The two maxima in the vis-spectra of Cu(R4NNO)2 and Ni(R4NNO)2 are assigned to the 3 dxy → 3 dx2-y2 and the 3 dxz, 3 dyz → 3 dx2-y2 electron transitions. The shift of these maxima, which is connected with the dissolution in chloroform, is explained by the formation of hydrogen bonds between the solvent and the N-alkylated nitrogen atoms of the ligands.1H-n. m. r.-spectra and solubility of the ligands and the crystal structure of Cu[(C4H9)NNO]2 are described.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250206
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  • 4
    Electronic Resource
    Electronic Resource
    The electro-osmotic actuation of implantable insulin micropumps (1983)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 17 (1983), S. 931-943 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: A study using an electro-osmotic cell suitable for actuating an implantable insulin micropump showed that controlled variable flow rates in the order of 0.2 mL/day are possible. The cell functioned continuously with low energy and power requirements and long service life. The principle of operation is compatible with achieving the very low flow rates necessary if highly concentrated insulin is to be used to avoid frequent insulin reservoir refilling. An electro-osmotic cell, Ag/ AgCl/NaCl(aq)/ cation exchange membrane/NaCl(aq)/ AgCl/ Ag, was connected to a constant current power supply which reversed the direction of the current every 10 mins causing a to-and-fro transport of fluid through the membrane. Flow rates of 0.15-0.60 μL/min were achieved with currents of 2.5-10 mA. At the low flow rate, energy consumption was 6.4 × 10-2 J/μL and peak power requirement was 〈2.0 × 10-4 W. Fluid was transported against a pressure gradient of 52 cm Hg. The cell contained a total electrolyte volume of 〈0.25 mL. The membrane showed no change in properties after 10,000 current reversals (69 days). To function as an actuator for an implantable insulin micropump, the electro-osmotic cell requires a switching and valving assembly; a suitable design for this is briefly considered.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820170605
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  • 5
    Electronic Resource
    Electronic Resource
    2,5-Bis-(β-hydroxy-äthylamino)-terephthalsäure als Indikator in der Argentometrie. II (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 316 (1962), S. 34-40 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 2,5-Bis-(β-hydroxy-ethylamino)-terephthalic acid is converted by oxidation by means of silver nitrate into an intensively red semiquinone. Therefore, the aminoacid can be used as an indicator for argentometric titrations. The estimation of J-, SCN-, S--, and Tl+ is described.
    Notes: 2,5-Bis-(β-hydroxy-äthylamino)-terephthalsäure geht bei der Oxydation mit Silbernitrat in ein intensiv rotgefärbtes Semichinon über. Infolge dieser Eigenschaft läßt sich die Aminosäure als Indikator in der Argentometrie einsetzen. Es wird über die Bestimmung der Jodid-, Rhodanid-, Sulfid- und Thallium(I)-Ionen berichtet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623160106
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  • 6
    Electronic Resource
    Electronic Resource
    Komplexbildung mit N-Substitutionsprodukten der 2,5-Diaminoterephthalsäure. III. Verbindungen mit tertiären Aminfunktionen (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 314 (1962), S. 321-333 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 2,5-Bis-[bis-(carboxymethyl)-amino]-terephtalic acid and related compounds react with copper, nickel, and cobalt ions forming mono- and binuclear complexes. In the crystalline state, only polynuclear reaction products have been isolated. The ligand properties of the carboxyl groups have been investigated.
    Notes: Die 2,5-Bis-[bis-(carboxymethyl)-amino]-terephthalsäure und verwandte Verbindungen bilden mit Kupfer-, Nickel- und Kobaltionen in Lösung je nach den Konzentrationsverhältnissen ein- und zweikernige Komplexe. Die Tendenz zur Bildung zweikerniger Komplexe ist erwartungsgemäß stärker ausgeprägt als bei den früher untersuchten 2,5-Diaminoterephthalsäurederivaten, die nur alkoholische Hydroxylgruppen in den Seitenketten enthielten. Im kristallisierten Zustand konnten von den genannten Verbindungen nur Mehrkernkomplexe isoliert werden. Aus dem Kristallwassergehalt und dem Verhalten beim thermischen Abbau ist zu ersehen, daß in einigen der dargestellten Komplexverbindungen nicht alle ionisierten Carboxylgruppen zur Komplexbildung herangezogen werden. In anderen Fällen dagegen wirkt die undissoziierte Carboxylgruppe als Ligand.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623140511
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  • 7
    Electronic Resource
    Electronic Resource
    Stabilitätsmessungen an Komplexen des N-(β-Hydroxy -äthyl)-β-alanins und verwandter Verbindungen (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 112-120 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-(β-Hydroxy-ethyl)-β-alanine (III), 2-(β-hydroxy-ethylamino)-terephathalic acid (IV) and 2,5-bis-(β-hydroxy-ethylamino)-terephathalic acid (V) behave as tridentate ligands against Cu(II), Ni(II) and Co(II) ions forming 1,1 and 1,2 complexes, some of which occur in the protonated form. The stability constants of the 1,2 chelates were found to be smaller than those of the 1,1 chelates. The aliphatic ligand III yields more instable complexes than the aromatic compounds IV and V.
    Notes: N-(β-Hydroxy-äthyl)-β-alanin (III), 2-(β-Hydroxy-äthylamino)-terephthalsäure (IV) und 2,5-Bis-(β-hydroxy-äthylamino)-terephthalsäure (V) wirken Kupfer(II)-, Nickel(II)- und Kobalt(II)-Ionen gegenüber als dreizählige Liganden. Die Stabilitätskonstanten der 1,1-Komplexe, die zum Teil noch Wasserstoffionen anlagern können, wurden bestimmt. In einigen Fällen gelang auch die Ermittlung der Stabilitätskonstanten von 1,2-Chelaten. Sie sind in jedem Fall kleiner als die der 1,1-Chelate. Der aliphatische Ligand III bildet vergleichsweise instabilere Komplexe als die aromatischen Liganden IV und V.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643310117
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Struktur der Reaktionsprodukte von Thallium-1,3-diketonaten mit Schwefelkohlenstoff (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 337 (1965), S. 98-104 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The interaction between CS2 and thallium 1,3-diketonates yields, by electrophilic substitution at the meso-C atom, dithallium salts of the 1-acetyl-2-methyl-2-hydroxy-dithioacrylic acid. CSe2 reacts analogously. The IR spectra of heavy-metal dithiobenzoates are communicated.
    Notes: Bei der Umsetzung von Schwefelkohlenstoff mit Thallium-1,3-diketonaten erfolgt eine elektrophile Substitution am meso-Kohlenstoffatom, und es entstehen Dithalliumsalze der 1-Acetyl-2-methyl-2-hydroxy-dithioacrylsäure. Selenkohlenstoff ist zu einer analogen Umsetzung befähigt. Es werden die IR-Spektren von Schwermetalldithiobenzoaten mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653370113
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  • 9
    Electronic Resource
    Electronic Resource
    Untersuchungen an Oximkomplexen. III. Nickelchelate des Bis-(diacetylmonoxim-imino)-propans-1,3 und des Bis-(diacetylmonoxim-imino)-äthans-1,2 (1966)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 343 (1966), S. 299-307 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The two compounds mentioned in the title (“[DOH]2pn” and “[DOH]2en”, resp.) react with nickel salts forming the complex compounds Ni{(DOH)(DO)pn}X with X = ClO4, Br, J, SCN; and Ni{(DOH)(DO)en}Y with Y = ClO4, J, SCN. The two perchlorates are supposed to have a planarquadratic structure with ionically bound anions. The other anions, however, interact co-ordinatively with the complex cations, forming thus compounds with, probably, tetragonal-pyramidal configurations.
    Notes: Die in der Überschrift genannten Verbindungen (Abkürzung [DOH]2pn und [DOH]2en) bilden mit Nickelsalzen einwertiger Anionen Komplexe der allgemeinen Formeln Ni{(DOH)(DO)pn}X (X = ClO4, Br, J, SCN) und Ni{(DOH)(DO)en}Y (Y = ClO4, J, SCN). Für die beiden Perchlorate wird auf Grund physikalischer Untersuchungen eine planarquadratische Struktur mit ionischer Funktion des Anions vorgeschlagen. Bromid, Jodid und Rhodanid treten dagegen mit den komplexen Kationen [Ni{(DOH)(DO)pn}]+ bzw. [Ni{(DOH)(DO)en}]+ in koordinative Wechselwirkung. Dabei entstehen wahrscheinlich Verbindungen mit tetragonal-pyramidaler Struktur.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19663430510
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  • 10
    Electronic Resource
    Electronic Resource
    Untersuchungen an Oximkomplexen, V. Nickel(II)- und Palladium(II)-chelate von Aminderivaten des Dimethylglyoxims (1966)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 348 (1966), S. 12-20 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dimethyl(and -ethyl)-amino-dimethylglyoxime (H2L and H2M, respectively) react with Ni(II) and Pd(II) forming innercomplexes which are analogs of bis-(dimethylglyoximato)-nickel resp. -palladium. The tertiary amino groups have no ligand functions, they are, however, readily protonated to give quarternary ammonium salts such as Ni(H2L)2X2 with X = Cl, ClO4. In connection with the compounds Ni(H2L)2Cl2 and Ni(H2L)2Cl2, 2 H2O, the problem of isomeric Ni(II) complexes of vic-dioximes is discussed.
    Notes: Dimethylamino- und Diäthylamino-dimethylglyoxim (H2L und H2M) bilden mit Nickel(II) und Palladium(II) Innerkomplexe, die Analoga zum Bis-(dimethyl-glyoximato)-nickel bzw.-palladium darstellen. Die tertiären Aminogruppen von H2L und H2M nehmen nicht an der Komplexbildung teil, vermögen aber auch dann, wenn die Dioximliganden an ein Zentralatom gebunden sind, Protonen anzulagern und geben damit den Anlaß zur Bildung quarternärer Ammoniumsalze wie Ni(H2L)2Cl2 und Ni(H2L)2(ClO4)2. Im Zusammenhang mit den Verbindungen Ni(H2L)2Cl2 und Ni(H2L)2, 2 H2O wird das Isomerieproblem bei Nickel(II)-Komplexen vicinaler Dioxime diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19663480103
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