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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 1391-1398 
    ISSN: 1572-8943
    Keywords: adducts ; complexes ; 8-hydroxyquinoline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die hergestellten Addukte von [Mo(CN)8]3− und von [W(CN)8]3− mit 8-Hydroxyquinolin (Oxin) haben die allgemeine Formel K3[Mo(CN)8](C9H7ON)8·4H2O bzw. K3[W(CN)8](C9H7ON)6·3H2O. Die FTIR-Spektren beweisen die Gegenwart der (CN)- bzw. der Oxingruppen in den Adduktverbindungen durch die Peaks im Bereich 2047–2108 cm bzw. 1015–1461 cm−1. Die untere Region des FTIR-Spektrums zeigt die M=O Valenzschwingung, die obere Region (N-H) und (OH). Nichtkoordiniertes Wasser wird in diesen Addukten in einem einzigen Schritt bei 110°C abgegeben. Die Zersetzung der Adduktverbindungen beginnt bei 125°C und setzt sich in verschiedenen Schritten bis hin zu 850°C fort. Der zweite Schritt der Zersetzung wird durch die Abgabe von Oxinmolekülen beherrscht, wobei polymere Oxide der allgemeinen Formel K2OM2O5 (mitM= Mo oder W) als Pyrolyseprodukte erhalten werden.
    Notes: Abstract The adducts of [Mo(CN)8]3− and [W(CN)8]3− with 8-hydroxyquinoline (oxine) synthesized were of the type K3[Mo(CN)8]·(C9H7ON)8·4H2O and K3[W(CN)8]·(C9H7ON)6·3H2O. The FTIR spectra show the presence of the (CN) and oxine group in the adduct compounds through the peaks in the range 2047–2108 cm−1 and 1015–1461 cnf−1 respectively. The lower region of FTIR spectra show the M=O stretching while the higher range to v(N-H) and v(OH) modes. The uncoordinated water in these adducts was removed at around 110°C in a single step. The decomposition of adduct compounds starts from 125°C and continues to higher temperatures upto 850°C in different stages. The second stage of decomposition was predominant with the removal of oxine molecules with the formation of polymeric oxide of the type K2O·M2O5 (whereM=Mo or W) obtained as the pyrolysis product.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 46 (1996), S. 1763-1774 
    ISSN: 1572-8943
    Keywords: adducts ; complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The photoproduct of octacyanomolybdate(IV) and -tungstate(IV) with ethylenediamine and triethylenetetramine give complexes of the type K3[Mo(O2)(O)(OH)(C9H7ON)]·3C9H7ON I, K2[W(O2)(O) (C9H7ON)3] II and K3[Mo(CN)3(OH)4(C9H7ON)]·2C9H7ON·3H2O III with 8-quinolinol (oxine). The IR spectra of the complex III shows the presence ofv(CN) peaks in the range 2047–2108 cm−1 and oxine groupv(C-O) in the complex I, II and III in the range of 1100–1150 cm−1. The lower region of IR spectra shows the M=O stretching while the higher thev(N-H) andv(OH). Thermal studies show the removal of uncoordinated water at 131
    Type of Medium: Electronic Resource
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