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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 793 (1984), S. 300-309 
    ISSN: 0005-2760
    Keywords: Lung surfactant ; Phosphatidylcholine ; Phospholipid analog
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 664 (1981), S. 182-187 
    ISSN: 0005-2760
    Keywords: (Rabbit lung) ; Development ; Phosphatidylcholine ; Surfactant phosphatidylcholine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 752 (1983), S. 178-181 
    ISSN: 0005-2760
    Keywords: (Rabbit) ; Lung surfactant ; Phosphatidylcholine ; Precursor incorporation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Potassium hexahydroxoscandate ; rubidium hexahydroxoscandate ; rubidium hexahydroxochromate ; structure determination ; crystal chemistry ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structural Relationship of Potassium Hexahydroxoscandate(III), K3[Sc(OH)6] with the Isotypic Hydroxometallates Rb3[Sc(OH)6], K3[Cr(OH)6], and Rb3[Cr(OH)6]Ternary hydroxides M3I}MIII(OH)6{ with MI = K, Rb and MIII = Sc, Cr were obtained in the same way as K3[Cr(OH)6] [1] from alkali metal amides and d-metal nitrates by a comproportionation reaction of amide and nitrate ions in supercritical ammonia to elementary nitrogen and hydroxide ions at 523 K and 3 ≤ p(NH3) ≤ 6 kbar within 1 to 3 months. Their structures were determined by single crystal x-ray methods inclusive the positions of the hydrogen atoms. The ratio of size of r(MI)/r(MIII) is related to the symmetry of these hydroxometallates. Structural relationships between K3[Sc(OH)6] and Rb3[Sc(OH)6], K3(Cr(OH)6], Rb3[Cr(OH)6]) and K4[CdCl6] [4] are discussed.
    Notes: Ternäre Hydroxide M3I{MIII(OH)6}mit MI = K, Rb und MIII = Sc, Cr wurden analog zu K3[Cr(OH)6] [1] aus Alkalimetallamiden und d-Metallnitraten durch Komproportionierung von Amid- und Nitrationen zu elementarem Stickstoff und Hydroxidionen in überkritischem Ammoniak bei 523 K und 3 ≤ p(NH3) ≤ 6 kbar innerhalb von 1 bis 3 Monaten dargestellt. Die Atomanordnungen der Verbindungen wurden einschließlich der H-Positionen röntgenographisch an Einkristallen bestimmt. Das Größenverhältnis r(MI)/r(MIII) korreliert mit der Symmetrie dieser Verbindungen. Strukturchemische Beziehungen von K3[Sc(OH)6 zu Rb3[Sc(OH)6], K3[Cr(OH)6], Rb3[Cr(OH)6] zu K4[CdCl6] [4] werden diskutiert.
    Additional Material: 4 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 2079-2082 
    ISSN: 0044-2313
    Keywords: Calcium imide CaNH ; preparation ; single-crystals ; structure determination ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of Calcium Imide, CaNHSingle-crystals of calcium imide were obtained for the first time by the reaction of a mixture of calcium amide with sodium amide at 850°C in an autoclave for salt melts. After cooling the autoclave to room temperature the crystals are embedded in solid Na which was extracted by liquid ammonia. The structure of calcium imide was determined from single-crystal diffractometer data:space group Fm3m, Z = 4, a = 5.143(1) Å, R/Rw = 0.032/0.028 mit N(Fº2 ≤ 3σ(Fº2)) = 26, N(Var.) = 5.Ca and N atoms are arranged in the motif of the NaCl structure type. The hydrogen atoms of the imide groups are disordered within the Ca octahedra, and they occupy a six fold split position.
    Notes: Kristalle von Calciumimid wurden durch Aufheizen eines Gemenges von Calcium- und Natriumamid in einem Autoklav für Salzschmelzen auf 850°C zum ersten Mal erhalten. Nach Abkühlen des Autoklavs sind die Kristalle in festem Na eingebettet, das mit flüssigem NH3 extrahiert wurde. Die Struktur von CaNH wurde röntgenographisch aus Einkristall-Diffraktometerdaten bestimmt:Raumgruppentyp Fm3m, Z = 4, a = 5,143(1) Å, R/Rw = 0,032/0,028 mit N(Fº2 ≤ 3σ(Fº2)) = 26, N(Var.) = 5.Ca- und N-Atome sind nach dem Motiv des NaCl-Strukturtyps angeordnet. Die Wasserstoffatome der Imidgruppen sind fehlgeordnet und besetzen in den Oktaedern von Ca eine Splitlage mit sechs Aufenthaltsmaxima.
    Additional Material: 2 Ill.
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