ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Inorganic Chemistry  (237)
  • 1975-1979  (161)
  • 1950-1954  (7)
  • 1930-1934  (69)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 439 (1978), S. 265-274 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Hydrates of Na2PHO3, Phase Relations and Crystallographic InvestigationsDehydration of Na2PHO3,5 H2O to the respective anhydrous salt was investigated by thermogravimetry and differential thermal analysis. In the course of dehydration an intermediate lower hydrate is formed, Na2PHO3,0.5 H2O. Single crystals of this phase were grown from solution. Na2PHO3,0.5 H2O is rhombohedral, space group R32, R3m or R3m, with a = 18.918(5) Å and α = 33.00(2)°. - The crystal structure of Na2PHO3,5 H2O was redetermined. The pentahydrate is orthorhomic, space group Pnm21, with a = 7.190(1), b = 6.447(1), c = 9.230(2) Å. The structure consists of layers of Na-coordinating polyhedra which share edges and vertices. The layers are connected to a threedimensional structure by hydrogen bonds of the water molecules.
    Notes: Die Dehydratisierung von NaaPHO3 · 5 H2O zum wasserfreien Salz wurde mit Thermogravimetrie und Differentialthermoanalyse untersucht. Die Entwässerung verläuft über die Stufe eines intermediären niederen Hydrates, Na2PHO3 · 0,5 H2O. Einkristalle des Hemihydrates konnten aus Lösung gezüchtet werden; es kristallisiert rhomboedrisch, Raumgruppe R32, R3m oder R3m, mit a = 18,918(5) ß und α = 33,00(2)°. - Die Kristallstruktur von Na2PHO3 · 5 H2O wurde neu bestimmt. Das Pentahydrat kristallisiert orthorhombisch, Raumgruppe Pnm21 mit a = 7,109(1), b = 6,447(1), c = 9,230(2) Å. Die Struktur ist aus Schichten von kanten- und eckenverknüpften Na-Koordinationspolyedern aufgebaut. Die Schichten werden durch Wasserstoffbrückenbindungen der Wassermoleküle zu einem dreidimensionalen Strukturverband verknüpft.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of Thallium(I) Hexaiodomercurate(II), Tl4HgI6In the structure of the tetragonal Tl4HgI6 (a = 944.6 pm, c = 926.0 pm, Z = 2, space group P 4/mnc) isolated, in c-direction compressed HgI6 octahedra are situated. The mercury atoms are disordered; they occupy statistically 4 positions in the equatorial plane of the octahedra in such a manner that strongly deformed HgI4 tetrahedra are produced. The thallium atoms are eightfold coordinated like a bicapped trigonal prism. The relationship between the Tl4HgI6 structure and the cubical K2PtCl6 type will be discussed.
    Notes: In der Struktur des tetragonalen Tl4HgI6 (a = 944,6 pm, c = 926,0 pm, Z = 2, Raumgruppe P 4/mnc) liegen isolierte, in Richtung der c-Achse gestauchte HgI6-Oktaeder vor. Die Quecksilberatome sind fehlgeordnet; sie besetzen statistisch 4 Positionen in der Äquatorebene der Oktaeder derart, daß stark verzerrte HgI4-Tetraeder entstehen. Die Thallium-Atome sind achtfach in Form eines bicapped trigonalen Prismas koordiniert. Die Beziehungen der Tl4HgI6-Struktur zum kubischen K2PtCl6-Typ werden diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 29Si-NMR Spectroscopy of Silicate Solutions. II. On the Dependence of the Structure of Silicate Anions in Water Solutions from the Na : Si RatioThe 29Si-FT-NMR spectra of 13 sodiumsilicate solutions with different Na:Si ratios are investigated with regard to the structure of the silicate anions in the solutions. The 5 typical building units (Monosilicate, end-, middle-, branching and crosslinking groups) show characteristic and non overlapping ranges of the 29Si chemical shift with many signals splittings caused by different neighbouring group effects. The relative intensities of the signals give informations on the concentrations and the equilibrium of condensation of the silicate anions in dependence of the Na:Si ratio. It is shown, that many types of anions with different degree of condensation coexist in an equilibrium, which is shiftet to the polymer silicate anions with high content of branching and crosslinking groups on the decrease of the Na:Si ratio.
    Notes: Die 29Si-FT-NMR-Spektren von 13 Natriumsilicatlösungen mit unterschiedlichem Na:Si-Verhältnis werden in Hinblick auf die Struktur der in den Lösungen auftretenden Silicatanionen untersucht. Für die 5 möglichen Baugruppen (Monosilicat, Endgruppen. Mittelgruppen, Verzweigungs- und Vernetzungsgruppen) lassen sich definierte Bereiche der 29Si-chemischen Verschiebung angeben, in denen durch Einfluß der weiteren strukturellen Umgebung i. a. zahlreiche Signalaufspaltungen beobachtet werden. Aus den relativen Intensitäten der Signale können Aussagen über die Konzentrationsverteilung und damit über das Kondensationsgleichgewicht der Silicatanionen in Abhängigkeit vom Na:Si-Verhältnis abgeleitet werden. Es zeigt sich, daß zahlreiche Anionentypen mit unterschiedlichem Kondensationsgrad nebeneinander in einem Gleichgewicht vorliegen, das sich mit fallendem Na:Si-Verhältnis stark auf die Seite höhermolekularer Silicatanionen mit hohem Gehalt an Verzweigungs- und Vernetzungsgruppen verschiebt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organocobalt-Clusterverbindungen. 26. Die Darstellung von Mercaptosubstituenten enthaltenden Methylidyntricobaltnonacarbonyl-KomplexenDie Umsetzung von Bromo- und Chloromethylidyntricobaltnonacarbonyl, XCCo3(CO)9 (X = Br, Cl) mit Zinndimethylbis(alkylmercaptiden), (CH3)2Sn(SR)2 in Toluol unter Rückfluß in 20-30 min stellt eine gute Methode zur Herstellung von schwefelsubstituierten Methylidyntricobaltnonacarbonylkomplexen des Typs RSCCo3(CO)9 (R = Alkyl, Aryl, Acetyl, Benzoyl) dar. Ebenfalls effektiv, aber weniger praktisch waren Trimethylzinnalkylmercaptide und Quecksilber-bis(ethylmercaptid).
    Notes: The reaction of bromo- and chloromethylidynetricobalt nonacarbonyl, XCCo3(CO)9 (X = Br, Cl) with dimethyltin bis (alkyl mercaptides), (CH3)2Sn(SR)2, in toluene solution at reflux for 20-30 min provides a useful procedure for the preparation of sulfur-substituted methylidynetricobalt nonacarbonyl complexes of type RSCCo3(CO)9 (R = alkyl, aryl, acetyl, benzoyl). Also effective, but less practical, in such applications were trimethyltin alkylmercaptides and mercury bis (ethyl mercaptide).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 187 (1930), S. 193-208 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 193 (1930), S. 106-112 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 195 (1931), S. 164-172 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 234-240 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Reaktion zwischen Natriumnitrit und Jodkalium in essigsaurer Lösung ist in bezug auf beide Körper monomolekular.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 199 (1931), S. 225-234 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 196 (1931), S. 284-288 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...