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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 417 (1975), S. 154-160 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Some Characteristics of Copper(I)-Copper(II) SelenocyanatesFrom the system Cu2+-H2O-en-SeCN-in dependence on the conditions two new complexes have been prepared: Cu3en2(SeCN)(CN)3· H2O(I) and Cu3en2(SeCN)2(CN)2· H2O(II). They were studied by the methods of infra-red and EPR spectra as well as by those of X-ray diffraction. It has been found that Cu2+ is coordinated in these complexes with two molecules of ethylene diamine and one molecule water. The anion ligands have a bridging function and coordinate the copper(I).The EPR spectra show that the two complexes exhibit around the atom Cu2+ have different ligand field symmetry. For complex (I) it is a typically axial spectrum with two values of the gfactor g⊥—2.18 and g⊥—2.05 while complex (II) has an asymmetrical isotropic spectrum with one g-factor value only g⊥—2.07.
    Notes: Aus dem System Cu2+-H2O-en-SeCN-wurden in Abhängigkeit von den Bedingungen zwei neue Komplexe hergestellt: Cu3en2(SeCN)(CN)3. H2O(I) und Cu3en2 (SeCN)2(CN)2. H2O(II). Ihre Untersuchung erfolgte mittels der Infrarot- und EPR-Spektroskopie sowie der Röntgendifraktion. Cu2+ liegt in diesen Komplexen durch zwei Äthylendiamin- und eine Wassermolekel koordiniert vor. Die Anionliganden haben eine Brückenfunktion und binden das einwertige Kupfer. Die EPR-Spektren zeigen, daß die Ligandenfeldsymmetrie um das Cu2+- Atom bei den beiden Komplexen nicht gleich ist. Komplex (I) hat ein typisch axiales Spektrum mit zwei g-Faktorwerten g⊥—2,18 und g⊥—2,05, während Komplex (II) ein asymmetrisches, isotropes Spektrum aufweist, mit einem Wert von g⊥—2,07.
    Additional Material: 2 Tab.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 417 (1975), S. 229-234 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Spectral Properties of Cyanocopper(I)-Copper(II) CompoundsThe spectral properties of the compounds: Cu 3 (CN) 4 (NH 3 ) 3, Cu 5 (CN) 6 (NH 3 ) 4, Cu 3 (CN) 4 en 2 H 2 O, Cu 4 (CN) 6 en 2 H 2 O, Cu 5 (CN) 6 en 2 and Cu 3 (CN) 4 (H 2 O) 5 were studied. On the basis of the results of spectral informations in relation with the results of X-ray analysis of the first three compounds, bond posibilities of the CN group and the way of coordination at copper(I) and copper(II) in the investigated compounds of unknown structure are discussed.
    Notes: Die spektralen Eigenschaften der Komplexe Cu 3 (CN) 4 (NH 3) 3, Cu 5 (CN) 6 (NH 3) 4, Cu 3 (CN) 4 en 2 H 2 O, Cu 4 (CN) 6 en 2 H 2 O, Cu 5 (CN) 6 en 2 und Cu 3 (CN) 4 (H 2 O) 5 werden untersucht. Durch Vergleich der Spektren mit den Ergebnissen einer Röntgen-Strukturanalyse der ersten drei Komplexe wird die Bindungsmöglichkeit der Cyanidgruppe und die Art der Koordination des ein- und zweiwertigen Kupfers in den untersuchten Komplexen unbekannter Struktur diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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