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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 24 (1985), S. 1288-1292 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 143-151 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Selenostannates from Aqueous Solutions: Preparation and Structure of Na4SnSe4 · 16 H20Pure selenostannates(IV) are prepared from aqueous solutions by reaction of SnSe2, with alkali selenides, strictly excluding oxygen. Na4SnSe4 · 16 H2O, being obtained from stoicheo-metric 1:2 quantities, is characterized by a complete X-ray structure analysis and by vibrational spectra. The compound is monoclinic (P21/m) with a = 8.673(3), b = 16.563(4), c = 8.647(2) Å, β = 92.10(2)°, Z = 2; it contains isolated tetrahedral SnSe44- ions [Sn—Se 2.504(2)-2.527(2) Å, Se—Sn—Se 106.6(1)-111.1(1)°] which are in contact to the hydrated octahedral [Na(OH2)6]+ ions through Se…H—O bridges within an extensive hydrogen bridge system.The stretching vibrations of the SnSe44- ion are observed at 195 (n̈1) and 252 cm-1 (n̈3). The stretching force constant is approximately 1.59 mdyn/Å.
    Notes: Selenostannate(IV) sind aus wäßriger Lösung bei Ausschluß von Sauerstoff durch Umsetzung von Alkaliseleniden mit SnSe2 rein darstellbar. Das aus stöchiometrischen Ansätzen synthetisierte Na4SnSe4 · 16 H2O wurde durch eine vollständige Röntgenstrukturanalyse charakterisiert. Es kristallisiert monoklin (P21/m) mit a = 8,673(3), b = 16,563(4), c = 8,647(2) Å, β = 92,10(2)°, Z = 2 und enthält isolierte tetraedrische SnSe44- -Ionen [Sn—Se 2,504(2) bis 2,527(2)Å, Se—Sn—Se 106,6(1) bis 111,1(1)°], die über Se…H—O-Brücken in einem ausgedehnten Wasserstoff-brückensystem mit den hydratisierten Kationen in Kontakt stehen.Die Valenzschwingungen des SnSe44- -Ions werden bei 195 (ν1) und 252 cm-1 (ν3) beobachtet. Die Valenzkraftkonstante beträgt etwa 1,59 mdyn/Å.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 92 (1980), S. 479-480 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Contribution to the Coordination in the Gaseous MAl2Cl8 Complexes. Visible Spectrum of CoAl2ClnI8-n and Crystal Structure of PdAl2Cl8The band wavenumbers in the visible spectrum of the mixed halogen complexes CoAl2ClnI8-n are observed between those of CoAl2Cl8 and CoAl2I8. The molar extinctions are comparable for all three cases. It can be concluded that the halogen coordination around cobalt is distorted octahedral.The crystal structure of PdAl2Cl8 was determined from single crystals. The compound is monoclinic, space group P21/c, with a = 6,583(3), b = 7.342(3), c = 13.033(5) Å, β = 96.40(3)°. The structure contains two molecular PdAl2Cl8 units per cell. Pd is in a tetragonal planar coordination of 4 Cl.The remissionspectrum of solid PdAl2Cl8 corresponds to the spectrum of the gaseous compound. The crystal structures of the compounds MAl2Cl8 are discussed, especially the relationship of the structure of the gaseous molecule CoAl2Cl8 with the known crystal structure of this compound.
    Notes: Das für gasförmige halogen-gemischte Komplexe CoAl2ClnI8-n gemessene Spektrum liegt auf der Skala der Wellenzahlen zwischen denen von CoAl2Cl8 und CoAl2I8. Die molare Extinktion ist in allen drei Fällen von vergleichbarer Größe. Daraus ist zu schließen, daß die Koordination des Kobalts durch Halogen bei diesen Verbindungen verzerrt oktaedrisch ist.Die Kristallstruktur von PdAl2Cl8 wurde mit Einkristallen bestimmt. Die Verbindung kristallisiert monoklin mit a = 6,583(3), b = 7,342(3), c = 13,033(5) Å, β = 96,40(3)°; Raumgruppe P21/c. Es liegt ein Molekelgitter mit 2 PdAl2Cl8-Molekeln/Zelle vor. Pd ist quadratisch-planar von Cl umgeben.Das Remissionsspektrum des festen PdAl2Cl8 stimmt mit dem Absorptionsspektrum der gasförmigen Verbindung überein.Die Kristallstrukturen der Verbindungen MAl2Cl8, insbesondere der Zusammenhang der Struktur der Gasmolekel CoAl2Cl8 mit der bekannten Kristallstruktur dieser Verbindung werden behandelt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 19 (1980), S. 481-482 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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