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  • Glyoxylamide bis(phenylhydrazone)  (1)
  • polymorphism  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Infrared spectroscopic and thermal analytical investigations on the polymorphism of N-arylsulphonyl isothioureas (1992)
    Springer
    Microchimica acta 108 (1992), S. 143-150 
    Details
    ISSN: 1436-5073
    Keywords: infrared spectroscopy ; thermal analysis ; polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 34 compounds containing the SO2-N-C-N-moiety are investigated by means of infrared spectroscopy and differential scanning calorimetry to study problems of polymorphic species. There are arguments for different crystalline solids of 16 sulphonyl derivatives. The phenomenon of polymorphism can be discussed both in terms of different hydrogen bonding and conformational effects. Although two tautomers are thinkable for the compounds being investigated the sulphonylimino structure is assumed to yield the most stable state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242423
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Reactions of Sodium Cyanodithioformate with Monosubstituted Hydrazines (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 269-271 
    Details
    ISSN: 0947-3440
    Keywords: Sodium cyanodithioformate ; Hydrazines, monosubstituted ; Thiooxamic acid derivatives ; Zwitterionic compounds ; Glyoxylamide bis(phenylhydrazone) ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Sodium cyanodithioformate (1) reacts with methylhydrazine (2) only in the presence of H2S to give the new, zwitterionic thiooxamic acid 1-(2-methylhydrazide) 2-(2-methylhydrazone) (3) in good yield. The reaction of 1 with phenylhydrazine (5) gives a mixture of the zwitterionic thiooxamic acid 1-(2-phenylhydrazide) 2-(2-phenylhydrazone) (6b) and the non-zwitterionic glyoxylamide bis(phenylhydrazone) (7). The mechanism of the formation of 3 and 6b is discussed. X-ray structural data of 3 and 6b are given.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719970138
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    Paper (German National Licenses)
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