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  • 1990-1994  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Structure of 6-hydroxyflavone (1992)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 48 (1992), S. 1714-1715 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270192005456
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure of hydrocotarnine hydrobromide (1993)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 49 (1993), S. 175-177 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270192008576
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Crystal structure of cefadroxil (1993)
    Springer
    Journal of chemical crystallography 23 (1993), S. 235-238 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal and molecular structure of Cefadroxil, (7-[[amino-(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo-[4.2.0]oct-2-ene-2-carboxylic acid monohydrate), C16H17N3-O5S.H2O has been determined from single crystal X-ray diffraction data. The compound crystallizes in the orthorhombic space groupP212121. The cell parameters area=11.065(3),b=11.221(4) andc=14.436(4)Å;M r=381.41;V=1792(2)Å3,z=4,D x=1.339 Mg−3;β=1.84 cm−1,F(000)=752,T=296 K,R=0.037 andR w=0.037. Theμ-lactam ring is not planar and the nitrogen atom in theβ-lactam deviates from the plane of the other three atoms attached to it by 0.224(4) Å. The thiazene ring is in the half-chair conformation. The molecules are stabilized by N-H⋯O and O-H⋯O hydrogen bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190052
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  • 4
    Electronic Resource
    Electronic Resource
    Crystal structure of abrine (1993)
    Springer
    Journal of chemical crystallography 23 (1993), S. 167-170 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal structure of abrine (N-methyl L-tryptophan, (C12H14N2O2) was determined by X-ray diffraction. Space groupP212121,a=5.372(1),b=8.595(1) andc=24.082(2)Å,Z=4,D m=1.30(4) gcm−3,D x=1.304 gcm−3,R=0.039 andwR=0.042. The conformational parameters for this structure following the IUPAC nomenclature areφ=67.7(5)°, ϰ1=−175(4)°, K21=105.2(7)° and χ22=−66.4(7)°; the atom C9 in the present structure is gauche to N15 andtrans to C12. The molecules exist in a zwiterionic form and are stabilized in the unit cell by N-H⋯O hydrogen bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190041
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    Paper (German National Licenses)
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