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  • 1
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1159-1161 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title complex, [Co2Cl2(μ-O2)(cyclam)2](C24H20B)2·2Me2CO, was obtained when [Co(cyclam)Cl2](BPh4)2 was crystallized from acetone in air; cyclam is 1,4,8,11-tetraazacyclotetradecane, C10H24N4. The peroxo O–O moiety straddles a crystallographic centre of inversion (the two octahedral Co atoms are symmetrically bridged by the O2 moiety), hence only half of the complex cation is in the asymmetric unit. A comparison of the O—O [1.483 (3) Å], Co—Cl [2.2647 (8) Å] and Co—O [1.894 (2) Å] bond lengths with similar bonds in previously determined structures indicates the oxidation of CoII to CoIII during the crystallization process. In the crystal lattice, cation dimers are encapsulated by six [BPh4]− anions, with C—H...π hydrogen bonds between the cyclam methylene groups and the phenyl rings of the anion.
    Type of Medium: Electronic Resource
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