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  • 1
    Electronic Resource
    Electronic Resource
    PDIDENT - a set of programs for powder diffraction phase identification (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 13 (1984), S. 172-179 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: PDIDENT is a collection of interactive computer programs which have been developed as aids for qualitative phase analysis of x-ray powder diffraction data. These FORTRAN IV programs are implemented on a DEC committee on Powder Diffraction Standards (JCPDS) data base is accessed by the programs along with user-created data. The data base (sets 1-32) along with all cross-index files requires 9 Mbytes of storage. The packing of the data base, use of cross-index files and the algorithms and utility of the PDIDENT programs are described.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300130410
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  • 2
    Electronic Resource
    Electronic Resource
    Rotational isomerism in 5-amino-6-(N-methylformamido)-as-triazin-3(2H)-one (1990)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 505-509 
    Details
    ISSN: 0749-1581
    Keywords: 1H DNMR ; Rotational isomerism ; 6-Azapurin-2-ones ; 6-Azapyrimidin-2-ones ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A 1H dynamic NMR study of the hindered rotation in 5-amino-6-(N-methylformamido)-as-triazin-3(2H)-one was conducted. Signals for two rotamers were observed and their proton chemical shifts were assigned. It was found that the rotamer in which the as-triazine ring is cis to the formyl hydrogen predominates. The free energies of activation for hindered rotations about the N —CHO and C —NH2 bonds were determined by 1H NMR line-shape analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260280607
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