Summary
From the reaction systemsCyclam/Mecyclam-KVO3-H2O-HCl-EtOH (Cyclam=1,4,8,11-tetraazacyclotetradecane; Mecyclam=5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane), the first polyvanadates with cations of macrocyclic amines were isolated: (CyclamH2)2-H2V10O28·2H2O, (MecyclamH2)2H2V10O28·6H2O, (CyclamH2)(VO3)2·3H2O, (CyclamH2)(VO3)2·2H2O, and (MecyclamH2)(VO3)2·H2O. The metavanadates with theCyclamH 2+2 cation differ markedly in their IR spectra, obviously due to the different structure of the polyanion. The interruption of dynamic heating at the thermal analysis of the crystallohydrates of dihydrogendecavanadates resulted in the formation of corresponding anhydrous dihydrogendecavanadates.
Zusammenfassung
Aus demCyclam/Mecyclam-KVO3-H2O-HCl-EtOH Reaktionssystem (Cyclam=1,4,8,11-tetraazacyclotetradecane;Mecyclam=5,5,7,12,12,14-hexamethyl-1,4,8,11-tetrazacyclotetradecane) wurden die ersten Polyvanadate mit cyclischen Aminen als Kationen isoliert: (CyclamH2)2V10O28·H2O, (MecyclamH2)2H2V10O28·6H2O, (CyclamH2)(VO3)2·3H2O, (CyclamH2)(VO3)2·2H2O und (MecyclamH2)(VO3)2·H2O. Die zwei Metavanadate mit dem KationCyclamH 2+2 unterscheiden sich wesentlich in ihren Infrarotspektren, was auf unterschiedliche Polyanionstruktur der Metavanadate hinweist. Durch Unterbrechen der dynamischen Erhitzung bei der thermischen Analyse von Kristallhydraten der Dihydrogendekavanadate wurden entsprechende Verbindungen ohne Kristallwasser gewonnen.
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Sucháa, V., Sivák, M. Metavanadates and dihydrogendecavanadates with cations of macrocyclic tetraamines. Monatsh Chem 127, 1–6 (1996). https://doi.org/10.1007/BF00807403
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DOI: https://doi.org/10.1007/BF00807403