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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 534 (1986), S. 115-120 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NH4[Re3Cl10(OH2)2] · 2 H2O: Synthesis and Structure. An Example for “Strong” N—H … O and O—H … Cl Hydrogen BondingThe red NH4[Re3Cl10(OH2)2] · 2 H2O crystallizes from hydrochloric-acid solutions of ReCl3 with NH4Cl. It is tetragonal, P41212, No. 92, a = 1157.6, c = 1614.5 pm, Z = 4. The crystal structure contains “isolated” clusters [Re3Cl10(OH2)2]-. These contain Cl…H—O—H…Cl units with “very strong” hydrogen bonds: distances Cl—O are only 286 pm. NH4+ has seven Cl- as nearest neighbours and, additionally, one H2O which belongs to a cluster [d(N—O1) = 271 pm] and one crystal water [d(N—O2) = 286 pm].
    Notes: Aus der salzsauren Lösung von ReCl3 kristallisiert mit NH4Cl rotes NH4[Re3Cl10(OH2)2] · 2 H2O aus; tetragonal, P41212 (Nr. 92), a = 1157,6; c = 1614,5 pm, Z = 4. Es treten „isolierte“ Cluster [Re3Cl10(OH2)2]- auf. Sie enthalten die Gruppierung Cl…H—O—H…;Cl mit „sehr starken“ Wasserstoff-Brücken-Bindungen, d(Cl—O) = 286 pm. NH4+ hat 7 Cl- als nächste Nachbarn, zusätzlich 2 H2O, von denen eines einem Cluster angehört [d(N—O1) = 271 pm], das andere ist „Kristallwasser“ [d(N—O2) = 286 pm].
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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