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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 1080 (1991), S. 138-142 
    ISSN: 0167-4838
    Keywords: (A. niger) ; Deglycosylation ; Glucose oxidase ; Property
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    ISSN: 0044-2313
    Keywords: Polysulfonyl amines ; lithium dimesylamide monohydrate ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polysulfonyl Amines. XXVI. A Polymeric Lithium Amide with Alternating Tetra- and Hexacoordinate Lithium Atoms: Crystal Structure of Lithium Dimesylamide MonohydrateLiN(SO2CH3)2 · H2O crystallizes in the orthorhombic space group Cmc21. The lithium atoms and the water molecules form infinite zigzag chains —Li(2)—OH2—Li(1)—OH2—Li(2)—. The dimesylamide anion acts as a tridentate bridging ligand, using N and one O atom of each sulfonyl group as donor atoms. In the chain depicted above, Li(1) is additionally coordinated by two N atoms, Li(2) by four O atoms of four different dimesylamide groups. Thus, Li(1) attains a nearly ideal tetrahedral (N2O2)-coordination, Li(2) a distorted octahedral (O6)-coordination. The overall result of the coordination pattern is a string with a repeat unit consisting of four condensed six-membered rings. The repeat units are linked in a spirane-like fashion at Li(2) as the spiro atom. The strings are three-dimensionally interconnected by hydrogen bonds. Two extremely short (S = O) bonds (137pm) are observed in the repeat unit.
    Notes: LiN(SO2CH3)2 · H2O kristallisiert in der orthorhombischen Raumgruppe Cmc21. Die Li-Atome und die Wassermoleküle sind zu unendlichen Zickzack-Ketten —Li(2)—OH2—Li(1)—OH2—Li(2)— verknüpft. Das Dimesylamid-Anion fungiert als dreizähniger Brückenligand mit dem N-Atom und je einem O-Atom der beiden Sulfonylgruppen als Donoratomen. Außer von den Wassermolekülen wird jedes Li(1) von zwei N-Atomen, jedes Li(2) von vier O-Atomen aus vier verschiedenen Dimesylamid-Gruppen koordiniert. Auf diese Weise erreicht Li(1) eine nahezu ideale tetraedrische (N2O2)-Koordination, Li(2) eine verzerrt oktaedrische (O6)-Koordination. Das Ergebnis des Koordinationsmusters ist ein Strang, dessen Repetiereinheit aus vier kondensierten Sechsringen besteht. Die Repetiereinheiten sind über Li(2) spiranartig verknüpft. Die Stränge sind über Wasserstoffbrücken dreidimensional quervernetzt. In der Repetiereinheit werden zwei extrem kurze (S = O)-Bindungen (137 pm) beobachtet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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