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  • 1970-1974  (6)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 404 (1974), S. 81-86 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Komplex-Carbonate des Chrom(III)Durch Mischen von Cr(III)-Lösungen mit Lösungen von (NH4)2Co3 oder KHCO3 werden tieffarbige Lösungen und mit NaHCO3 ein Niederschlag erhalten. Das Spektrum von Cr(NO3)3 (violett) gelöst in 35proz. KHCO3-Lösung zeigt Absorptionsmaxima bei 430 und 580 nm, wogegen Cr(NO3)3 (violett) Absorptionsmaxima bei 410 und 575 nm hat. Die Lösung von Cr(III) in 20proz. KHCO3-Lösung wurde durch Ionenaustausch untersucht. Die Komplex-Carbonate des Chroms (Formeln siehe Abstract) wurden dargestellt und thermogravimetrisch untersucht sowie die IR-Spektren aufgenommen und Bandenzuordnungen vorgenommen.
    Notes: On adding chromium(III) solution to solutions of (NH4)2CO3 or KHCO3, deep coloured solutions are obtained, whereas, in the case of NaHCO3 a precipitate is obtained. The spectrum of chromium(III) nitrate (violet) dissolved in KHCO3 (35%) solution shows maximum absorbances at 430 and 580nm, whereas the spectrum for chromium(III) nitrate (violet) shows maximum absorbances at 410 and 575 nm. The chromium(III) solution dissolved KHCO3 (20%) is studied by ion exchange method. The complex carbonates of chromium (III), viz., (i) (NH4)2[Cr2(OH)4(CO3)2] · H2O, - (ii) K7[Cr4(OH)9(CO3)5] · 6 H2O, - (iii) Na3[Cr2(OH)5(CO3)2] · 4 H2O, - (iv) NH4[Co(NH3)6] [Cr3(OH)7(CO3)3] · 4 H2O, and (v) K6[Co(NH3)6]2[Cr2(OH)4(CO3)3]3 are isolated and studied by thermogravimetry. The infrared spectra of these compounds are recorded and probable band assignments made.
    Additional Material: 1 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 403 (1974), S. 327-336 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Komplex-Carbonate des Eisen (III).Komplex-Carbonate des Eisen(III) (Formeln siehe Abstract) wurden dargestellt und thermogravimetrisch untersucht. Das Eisen liegt hier im Anion des Komplexes vor, und die Lösungen dieser Komplexe haben ein Absorptionsmaximum bei 460 nm. Die IR-Spektren wurden aufgenommen und Bandenzuordnungen vorgenommen. Die Reaktion zwischen KHCO3 und Fe(NO3)3 wurde mit chemischen und physikalischen Methoden untersucht.
    Notes: The complex carbonates of iron(III) are shown to be anionic in nature. The solutions containing these complexes show a maximum absorbance at 460 nm. The complex carbonates of iron(III), viz., (i) K6[Fe2(OH)2(CO3)5] · H2O,  -  (ii) Na2[Fe3O2(OH)3(CO3)2],  -  (iii) K[Co(NH3)6]2[Fe3(OH)4(CO3)6],  -  (iv) K5[Co(NH3)6]3[Fe3(OH) 4(CO3)6]2,  -  (v) K[Co(NH3)6][Fe2(OH)4(CO3)3], and (vi) NH4[Co(NH3)6][Fe2(OH)4(CO3)3] are isolated and studied by thermogravimetry. The infrared spectra of these compounds are recorded and probable band assignments made. Besides, the reaction between KHCO3 and Fe(NO3)3 was studied through chemical and physicochemical methods.
    Additional Material: 2 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es wird über die Darstellung der Monooxopentafluorovanadate(V) MI2VOF5 von Kalium, Ammonium und Åthylendiamin sowie der Monooxotetrafluorovanadate(V) MIVOF4 von Natrium, Pyridin, α Picolin, Chinolin, Guanidin, Äthylendiamin, α,α′-Dipyridyl und o-Phenanthrolin berichtet. Die Tetrafluoroverbindungen des Natriums, Chinolins und α,α′-Dipyridyl wurden IE-spektroskopisch charakterisiert (700-4000 cm-1), und bei (py · H)VOF4, (Chinolin · H)VOP4 und (α,α′-Dipyridyl · H2) (VOF4)2 wurde thermogravimetrisch unreines V2O5 als Endprodukt der thermischen Zersetzung an Luft beobachtet.
    Notes: The preparation of potassium, ammonium and ethylenediamine monooxopentafluorovanadates and of pyridine, α-picoline, quinoline, guanidine, ethylenediamine, α,α′-dipyridyl, o-phenanthroline and sodium monooxotetrafluorovanadates are reported. Infrared spectra of NaVOF4 · 0.7 HaO, (quinoline · H)(VOF4) and (α-α′-dipyridyl · H2) (VOF4)2 have been recorded (700-4000 cm-1). Thermogravimetric study up to 450°C of (pyridine · H)(VOF4), (quinoline H)(VOF4) and (α,α′-dipyridyl · H2)(VOP4)2 show that in all cases impure V2O5 is the ultimate product on heating.
    Additional Material: 2 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 384 (1971), S. 255-259 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ammonium-, Natrium-, Hexamminkobalt (III) und Åthylendiaminium-dioxofluorovanadat(V), MIVO2F2. wurden dargestellt und durch Röntgenpulveraufnahmen, IR-Spektrum und im Falle des NH4-Salzes-Thermogravimetrie charakterisiert.
    Notes: The syntheses of ammonium, sodium, hexamminecobalt(III) and ethylene-diamine dioxodifluorovanadate(V), MIVO2F2, are reported. Their x-ray powder diffraction data are different from those of the corresponding tetrafluoroborates and perchlorates. Their infrared spectra have been recorded (700-4000 cm-1), and probable band assignments made. The ammonium dioxodifluorovanadate has been studied through thermogravimetry, and the composition of an intermediate product is discussed from its chemical analysis and infrared spectrum.
    Additional Material: 1 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 390 (1972), S. 61-63 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Darstellung der Dioxitrifluorovanadate, MI2 (VO2F3)(M = Na+, NH+4, 1/2Ni2+) und MII(HVO2F3)2· xH2O (M = Cu2+, Ni2+, Co2+) wird beschrieben. Leitfähigkeitsmessungen von K2VO2F3 in verschiedener Konzentration deuten auf eine Dissoziation 2K+-und VO2F2-3-Ionen.
    Notes: Preparation of the salts of the series dioxotrifluorovanadates, M2I (VO2F3), where M = Na+, NH+4, 1/2Ni2+ and MII(HVO2F3)2· xH2O where M = Cu2+, Ni2+ and Co2+ are described. Molecular conductivity measurement of potassium dioxotrifluorovanadate(V), K2VO2F3, at different dilutions indicates that it dissociates primarily into 2K+ and VO2F2-3 ions.
    Additional Material: 1 Tab.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 390 (1972), S. 311-315 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es werden die Darstellung und die Eigenschaften der Salze M3IVO2F4 (M = NH4+, Na+, K+, 1/2 Ni2+ 1/3 [Co(NH3)6]3+) beschrieben. Aus Leitfähigkeitsmessungen von Na3VO2F4 in verschiedener Konzentration wird auf eine Dissoziation in 3 Na+- und VO2F43--Ionen geschlossen. Der Ionenaustausch von (NH4)3VO2F4-Lösung am Kationenaustauscher (H+-Form) zeigt, daß die entsprechende Säure zum Teil zu V2O5 zerfällt. (NH4)3VO2F4, reagiert mit BaCl2- und AgNO3- Lösungen unter Bildung von BaVO2F3 bzw. AgVO3. Röntgen-Untersuchungen sind an (NH4) VO2F4- und Na3VO2F4-Pulvern durchgeführt worden.
    Notes: Preparation and properties of the salts of the series MI3VO2F4, where M = NH4+, Na+, K+, 1/2 Ni2+, and 1/3 [Co(NH3)6]3+ are described. Molecular conductivity of Na3VO2F4 at different dilutions indicates that Na3VO2F4 dissociates into 3 Na+ and VOaF43- ions. Ion exchange study of (NH4)3VO2F4 solution through cation exchange resin (H+ form) suggests that the corresponding acid decomposes partly to vanadium pentoxide. Reaction between (NH4)3VO2F4 with BaCl2 and AgNO3 solutions shows the formation of BaVO2F3 and AgVO3 respectively. Thermogravimetric study of (NH4)3VO2F4 shows the formation of impure vanadium pentoxide as the ultimate product on heating up to 450°C. X-ray powder diffraction data are given for (NH4)3VO2F4 and Na3VO2F4.
    Additional Material: 3 Tab.
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