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  • 1975-1979  (9)
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  • 1
    Electronic Resource
    Electronic Resource
    Gitterschwingungsspektren 13. Mitt. Normalkoordinatenanalyse und Kraftkonstantenrechnungen von Chromthiospinellen (1977)
    Springer
    Colloid & polymer science 255 (1977), S. 1018-1018 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01776231
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Erdalkalimetall- und Bleihalogenat-Monohydrate. Röntgenographische, thermoanalytische und IR-spektroskopische Untersuchungen (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 423 (1976), S. 83-90 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Alkaline Earth Metal and Lead Halogenate Monohydrates. Thermal Analysis, X-Ray and IR-spectroscopic DataExcepting Ca(BrO3)2 · H2O and Sr(JO3)2 · H2O the chlorate, bromate, and iodate monohydrates of calcium, strontium, barium, and lead crystallize in the monoclinic space group C2/c. Data see „Inhaltsübersicht“.According to DTA-measurements the dehydration of the monohydrates takes place between 93°C (Sr(BrO3)2 · H2O) and 192°C (Ba(CIO3)2 · H2O) in two steps mostly. On further heating the halogenates are decomposed, the iodates to the periodates, the chlorates to the chlorides forming perchlorates as intermediate compounds (high temperature i.r.-spectra), the bromates to the bromides, and the lead compounds under bursting to the oxides. Before decomposition the melting point of anhydrous Ba(ClO3)2 and Ba(BrO3)2 can be observed (408 and 273°C).
    Notes: Die Chlorat-, Bromat- und Jodat-Monohydrate des Calciums, Strontiums, Bariums und Bleis kristallisieren mit Ausnahme des Ca(BrO3)2 · H2O in der monoklinen Raumgruppe C2/c: .Nach DTA-Messungen wird das Kristallwasser der Monohydrate zwischen 93°C (Sr(BrO3)2 · H2O) und 192°C (Ba(ClO3)2 · H2O) meist in zwei Schritten abgegeben. Bei weiterem Erhitzen werden (nach Hochtemperatur-IR-Messungen) die Jodate zu Perjodaten, die Chlorate über die Zwischenstufe der Perchlorate zu Chloriden, die Bromate zu Bromiden und die Bleiverbindungen explosionsartig zu Oxiden zersetzt. Beim Ba(CIO3)2 · H2O und Ba(BrO3)2 · H2O kann vor der Zersetzung der Schmelzpunkt der wasserfreien Verbindungen (408 und 273°C) beobachtet werden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764230112
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Calcium-, Strontium-, Barium-, Blei- und Cadmiumsulfite. Spektroskopische, röntgenographische und thermoanalytische Untersuchungen (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 425 (1976), S. 134-144 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Calcium, Strontium, Barium, Lead, and Cadmium Sulfites. Thermal Analysis, X-ray, Raman, and I.R. Spectroscopic DataCalcium, strontium, barium, lead, and cadmium form the following sulfites and sulfite hydrates: CaSO3 · 1/2 H2O, CaSO3, SrSO3, BaSO3, PbSO3 · H2O (?), 2 CdSO3 · 3 H2O, α-CdSO3 as well as β-CdSO3 which we have obtained by dehydration of 2 CdSO3 · 3 H2O. Method of preparation, i. r. and Raman spectroscopic data and d-values from Guinier photographs are presented. Except of CaSO3 · 1/2 H2O the crystal structures of these compounds are yet unknown. The coordination of the sulfite ions can nevertheless be ascertained from the frequences of the SO stretching modes as a result of NYBERG et al. [1]. The decomposition of the sulfites has been examined with help of thermal analysis.The dehydration happens from 300 to 380°C (CaSO3 · 1/2 H2O) resp. at 115 and 150°C (2 CdSO3 · 3 H2O). With higher temperatures decomposition (disproportionation and/or generating of SO2) occurs, and mixtures of oxides, sulfides, sulfates as well as basic sulfates (PbO · PbSO4, CdO · CdSO4, 2 CdO · CdSO4) remain.
    Notes: Von Calcium, Strontium, Barium, Blei und Cadmium werden folgende Sulfite und Sulfithydrate gebildet: CaSO3 · 1/2 H2O, CaSO3, SrSO3, BaSO3, PbSO3, PbSO3 · H2O (?), 2 CdSO3 · 3 H2O, α-CdSO3 und ein bei der Dehydratisierung des 2 CdSO3 · 3 H2O entstehendes β-CdSO3. Darstellung, IR- und Raman-Spektren sowie die aus Guinieraufnahmen erhaltenen Netzebenenabstände d dieser Verbindungen werden mitgeteilt.Die Kristallstrukturen sind mit Ausnahme der des CaSO3 · 1/2 H2O noch nicht bekannt. Die Koordination der Sulfitionen kann jedoch nach NYBERG et al. [1] aus der Lage der SO-Streckschwingungen ermittelt werden.Mit Hilfe von DTA- und TG-Messungen wurde die thermische Zersetzung der Sulfite untersucht. Die Wasserabspaltung erfolgt bei 300-380°C (CaSO3 · 1/2 H2O) bzw. 115 und 150°C (2 CdSO3 · 3 H3O). Bei höheren Temperaturen tritt unter SO2-Abspaltung und/oder Disproportionierung Zersetzung ein, wobei Gemische der Oxide, Sulfide, Sulfate und basischer Sulfate, z. B. PbO · PbSO4, CdO · CdSO4, 2 CdO · CdSO4, gebildet werden.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764250207
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  • 4
    Electronic Resource
    Electronic Resource
    Gitterschwingungsspektren. XVI. FIR-Spektren und Schwingungsanalyse von Dichalkogeniden und Diphosphiden des Eisens, Rutheniums, Osmiums und Platins (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 428 (1977), S. 199-203 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Lattice Vibration Spectra. XVI. FIR Spectra and Vibration Analysis of Dichalcogenides and Diphosphides of Iron, Ruthenium, Osmium, and PlatinumThe FIR absorption spectra of pyrite type compounds RuS2, RuS2-xSex, RuSe2, RuTe2, OsS2, OsSe2, and PtP2 as well as loellingite type phosphides FeP2, RuP2, and OsP2 are reported. For RuS2, RuSe2, RuTe2, OsS2, and PtP2 all of the five infrared allowed modes (k = 0) are observed. As a first result of a numerical normal coordinate treatment vibration forms of pyrite structure are communicated. The spectra show that lattice forces of corresponding sulfides, tellurides, and phosphides are about the same strength, but increase strongly by substitution of iron by ruthenium and especially of ruthenium by osmium. The lattice constants of the RuS2-xSex solid solution obey Vegard's rule.
    Notes: Die FIR-Spektren der Pyrite RuS2, RuS2-xSex, RuSe2, RuTe2, OsS2, OsSe2 und PtP2 sowie der Löllingite FeP2, RuP2 und OsP2 werden im Bereich von 500-30 cm-1 analysiert. Von RuS2, RuSe2, RuTe2, OsS2 und PtP2 konnten alle fünf IR-aktiven (k = 0) Gitterschwingungen des Pyritgitters registriert werden. Die als Ergebnis einer numerischen Normalkoordinatenrechnung erhaltenen Schwingungsformen werden mitgeteilt. Die Spektren zeigen, daß die Substitution der Schwefelatome durch Selen und Tellur bzw. durch Phosphor nur wenig an den Gitterkräften ändert. Die Bindungskräfte nehmen jedoch zu, wenn Eisen durch Ruthenium bzw. Ruthenium durch Osmium ersetzt werden. Die Gitterkonstanten der RuS2-xSex-Mischkristalle entsprechen der Vegardschen Regel.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774280124
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Hydrate des Bariumchlorids. Röntgenographische, thermoanalytische, Raman- und IR-spektroskopische Untersuchungen (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 457 (1979), S. 84-90 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrates of Barium Chloride. X-ray, Thermoanalytical, Raman, and I.R. DataIn the system BaCl2—H2O the hydrates BaCl2 · 2 H2O, BaCl2 · 1 H2O, BaCl2 · 1/2 H2O, and BaCl2 · uH2O were obtained. X-ray powder data, i.r. and Raman spectra, as well as thermoanalytical measurements (TG, DTA) are reported. BaCl2 · 1 H2O and BaCl2 · 1/2 H2O, which are both isotype with the corresponding hydrates of SrCl2, were prepared by dehydration of BaCl2 · 2 H2O or by back hydration of anhydrous BaCl2 with the calculated amounts of water. BaCl2 · uH2O (u ≍ 1) is formed as the primary product by the reaction of anhydrous BaCl2 with water vapour at room temperature. Preparation methods of salt hydrates by controlled back hydration of the anhydrous salts are reported.
    Notes: Im System BaCl2—H2O wurden folgende Hydrate erhalten: BaCl2 · 2 H2O, BaCl2 · 1 H2O, BaCl2 · 1/2 H2O und BaCl2 · uH2O. Röntgenpulverdaten, IR- und Raman-Spektren sowie das Ergebnis thermoanalytischer Messungen (TG, DTA) werden mitgeteilt. BaCl2 · 1 H2O und BaCl2 · 1/2 H2O, die mit den entsprechenden Hydraten des SrCl2 isotyp sind, werden beim Entwässern von BaCl2 · 2 H2O oder durch Umsetzen von wasserfreiem BaCl2 mit der berechneten Menge Wasser erhalten. BaCl2 · uH2O (u ≍ 1) bildet sich als primäres Reaktionsprodukt bei der Umsetzung von wasserfreiem BaCl2 mit Wasserdampf bei Raumtemperatur. Die Darstellung phasenreiner niederer Salzhydrate durch kontrollierte Rückbewässerung der wasserfreien Salze wird beschrieben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794570109
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  • 6
    Electronic Resource
    Electronic Resource
    SrCl2 · 1/2 H2O und SrCl2 · H2O Röntgenographische, thermoanalytische, Raman- und IR-spektroskopische Untersuchungen (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 441 (1978), S. 205-212 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: SrCI2 · 1/2 H2O and SrCl2 · H2O. X-ray, Thermalanalytical, Raman, and I. R. DataThe formation of the new compound SrCI2 · 1/2 H2O was detected with help of high-temperature X-ray and high-temperature Raman measurements. Strontium chloride hemihydrate was prepared by dehydration of the higher hydrates in a water-vapour atmosphere of 1 bar at 165 °C. The Course of dehydration of SrCI2 · 6 H2O, and SrCI2 · 2 H2O is discussed. X-ray, i.r.-and Raman data of SrCI2 · 1/2 H2O and SrCl2 · H2O are reported. SrCI2 · H2O crystallizes ortho-rhombic in the BaCI2 · H2O type (space group Pnma) with a = 1088.1(1), b = 416.2(1), and c = 886.4(1) pm. The water modes of the hydrates as well as the force constants and bond energies of the hydrogen bridges are discussed.
    Notes: SrCI2 · 1/2 H2O. konnte mit Hilfe von Hochtemperatur-Guinier- und Hochtemperatur-Raman-Messungen nachgewiesen und durch Entwässerung Höherer Hydrate des Strontiumchlorids bei 165°C unter einem Wasserdampfpartialdruck von 1 bar dargestellt werden. Der Verlauf der Entwässerung des SrCI2 · 6 H2O und SrCI2 · 2H2O wird diskutiert. Die Röntgenpulverdaten sowie die IR- und Raman-Spektren des SrCl2 · 1/2 H2O und des SrCI2 · H2O werden mitgeteilt. SrCI2 · H2O Kristallisiert orthorhombisch im BaCl2 · H2O-Typ (Raumgruppe Pnma) mit a = 1088,1(1), b = 416,2(1) und c = 886,(1) pm. Die Schwingungen der Kristallwassermolekeln sowie die kraftkonstanten und die Bindungsenthalpien der Wasserstoffbrücken werden diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784410122
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Chlorid-Spinelle Li2MgCl4, Li2MnCl4, Li2FeCl4, Li2CdCl4 (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 453 (1979), S. 121-126 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About the Chloride Spinels Li2MgCl4, Li2MnCl4, Li2FeCl4, Li2CdCl4FIR, Raman, and X-ray data of the spinel type chlorides Li2TCl4 (T = Mg, Mn, Fe, Cd) are presented. The vibrational spectra indicate that there is no 1:1 ordering on the octahedral sites of the lattice. Both DTA measurements and high temperature X-ray photographs show that the chloride spinels undergo a reversible phase transition to a cubic high temperature defect structure at 535°C (Li2MgCl4), 460°C (Li2MnCl4) and 385°C (Li2CdCl4), which has unit cell dimensions two times smaller than the spinel lattice. Disordering of the lithium sublattice still begins at much lower temperatures, as measurements of the electric conductivity indicate.
    Notes: Die Ergebnisse FIR- und Raman-spektroskopischer sowie röntgenographischer Untersuchungen an den im Spinelltyp kristallisierenden Chloriden Li2TCl4 (T = Mg, Mn, Fe, Cd) werden mitgeteilt. Die Schwingungsspektren zeigen, daß keine 1:1-Ordnung der Kationen auf den Oktaederplätzen vorliegt. Thermoanalytische Messungen sowie Röntgenheizaufnahmen zeigen, daß sich die Chlorid-Spinelle beim Erhitzen auf 535°C (Li2MgCl4), 460°C (Li2MnCl4) sowie 385°C (Li2CdCl4) reversibel in eine kubisch indizierbare Hochtemperatur-Defektstruktur mit gegenüber dem Spinellgitter um den Faktor 2 kleineren Gitterkonstanten umwandeln. Die Fehlordnung des Lithiumteilgitters setzt jedoch, wie Messungen der elektrischen Leitfähigkeit zeigen, schon bei erheblich niedrigeren Temperaturen ein.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794530615
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  • 8
    Electronic Resource
    Electronic Resource
    Lattice vibration spectra. XXIIFor paper XXI in this series see H. D. Lutz, R.-A. Becker, B. G. Kruska and H. J. Berthold, Spectrochim. Acta (in press). - infrared and Raman spectra of strontium chloride dihydrate, SrCl2·2H2O and SrCl2·2(H, D)2O (1979)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 8 (1979), S. 189-194 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The infrared absorption and Raman spectra of SrCl2·2H2O powder as well as SrCl2·2D2O, and partially deuterated and isotopically dilute samples, have been recorded in the range from 30 to 4000 cm-1 at 95 and 295 K and analysed with regard to the strongly asymmetric force field in the H2O molecules. This is shown by an unusually large splitting of the OH and OD stretching fundamentals of the HDO molecules: 3426 and 3243 cm-1 and 2534 and 2408 cm-1 respectively at 95 K. Uncoupled OD stretching frequencies of SrCl2·6H2O and SrCl2·H2O are also presented. In SrCl2·2H2O both a relatively strong and a weak hydrogen bond to chloride ions are present; these are essentially straight.The spectra of SrCl2·2H2O exhibit the following characteristics: (1) no intramolecular coupling of the OH stretching vibrations; (2) very large Fermi resonance of νOH and 2δH2O; (3) the same high intensity of H2O twisting librations in the infrared spectra as for wagging and rocking modes; (4) splitting of the librational fundamentals of the HDO molecules, as large as 100 cm-1, caused by different structural arrangements of the H and D atoms in the asymmetric H2O molecules; and (5) strong intermolecular coupling of bending and librational fundamentals, which results in correlation splittings up to 75 cm-1. Possibilities of assigning the librational modes of H2O molecules which are in an asymmetric force field are discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250080403
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  • 9
    Electronic Resource
    Electronic Resource
    Gitterschwingungsspektren. XIXXVIII. Mitt.: H. Haeuseler und H. D. Lutz, J. Solid State Chem. 22, 201 (1977). - infrarot- und Ramanspektren von BaBr2·2H2O und BaBr2·2D2O (1978)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 7 (1978), S. 130-136 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Low temperature infrared and Raman spectra of polycrystalline BaBr2·2H2O at different degrees of deuteration are studied in the frequency range from 4000 to 30 cm-1. The single peaks observed for the bending fundamentals of isotopically dilute H2O and D2O show that the molecules of the water of crystallization are equivalent, as required by Bang's structure determination. The singlets observed for the three fundamentals of isotopically dilute HDO show that there is a symmetric force field in the water molecules which is not predicted from the structure determination. In BaBr2·2H2O weak hydrogen bonds to the bromine ions are present which are largely bent. From the shift of the stretching modes relative to the frequencies of free water the hydrogen bond enthalpy was found to be 20 kJ. The temperature shifts of all the stretching modes are positive, which is not in agreement with Falk's results on bent hydrogen bridges. The internal modes and the twisting libration of the water molecules show an unusual large correlation splitting due to intermolecular coupling of the vibrations of the two water molecules in the 2Br-·2H2O structure unit.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250070305
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