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Mostrando ítems 11-20 de 23
Artículo
Structure and Absolute Configuration of 4-(a-D-Erythrofuranosyl)-1,3-dihydro-3-methyll-( p-tolyl)-2H-imidazole-2-thione, C 15 H18N2038
(International Union of Crystallography, 1985)
M r = 306.4, monoclinic, P21, a = 14.686 (6), b=5.359(4), c=9.439(3) A, fl=98.68(3) ° , V= 734.4 (7)/I,3, Z = 2, D x = 1.38 Mg m -3, 2(Mo Kct) = 0.7107 A, /t = 0-22 mm -1, F(000) = 324, T= 300 K, final R=0.042 (wR=0.037) ...
Artículo
Structure of 5-fl-D-Galactopyranosyl- 1,3-dimethylbarbituric Acid Monohydrate,* C12H1sN2Os.H20
(International Union of Crystallography, 1985)
Mr=336'30, orthorhombic, P21212 ~, a= 9.147(1), b=23.054(2), c=6.921(1)A, V= 1459.5(3)A 3, Z=4, Dm=l'53(1), Dx= 1.531Mgm -3, MoKa, 2=0.7107A, #=0.12mm -1, F(000)= 712, T= 300K, R =0.055 for 1623 observed independent ...
Artículo
Structure of l-(p-Ethoxyphenyl)-1,3-dihydro-3-phenyl-2H-benzimidazole-2-thione, C2IHlaN2OS
(International Union of Crystallography, 1984)
Mr=346-4, orthorhombic, P212121, a= 7.600(1), b= 11.132(2), c=20.767 (3)A, v= 1756.9(5)A 3, z=4, Dx=1.31Mgm -3, 2(CuKct) =.1.5418/k, /~= 1.67mm -1, F(000)=728, T= 300 K. Final R = 0.049 for 1531 observed independent ...
Artículo
Structure and Absolute Configuration of l'-(p-Bromophenyl)-3'-ethyl-l',Y,4',5'- tetrahydro- 1,2-dideoxy-u-L-glucofuranoso[2,l-d]imidazole-2'-thione Monohydrate,* C15H19BrN204S.H20
(International Union of Crystallography, 1985)
M r = 421-30, monoclinic, P2~, a = 7.531 (1), b=8.148(4), c= 14. 625 (2) ,~, fl=97.14(1) °, V= 890.5 (5) ,~3, Z= 2, Din= 1.58 (1), Dx= 1.571 Mg m -3, Mo Kct, 2 = 0.7107 ,~,/~ = 2.42 mm -1, F(000)=432, T= 300 K, R =0.065 ...
Artículo
Molecular-Packing Analysis of Some Glucofuranoimidazolidine Crystals
(International Union of Crystallography, 1987)
Lattice-energy minimization for seven glucofuranoimidazolidine crystals was carried out in the atom-atom approach using an (exp-6-1) form for atom-pair interactions. Molecular rotation and translation and also internal ...
Artículo
Lattice-Energy Calculations on Phenothiazine and Phenoselenazine Modifications
(International Union of Crystallography, 1983)
Lattice-energy calculations in the atom-atom potential approach have been performed for observed and isostructurally derived hypothetical forms of phenothiazine and phenoselenazine compounds. Energy minimizations with ...
Artículo
Structure of l'-(p-Bromophenyl)-3'-ethyl- 1',3t,4',5 t -tetrahydro- 1,2-¢~• deoxy-D-glyeero-Dgu/ a-heptofuranoso[ 1,2-d]imidazole-2'-thione,* C16H21BrN2OsS
(International Union of Crystallography, 1984)
M r = 433.3, monoclinic, P21, a = 6.924 (3), b=8.661 (1), c=15.039(3)A, #=96.92(3) ° , v= 895.3 (4) A a, Z= 2, D, = 1.598 (5), Dx= 1.607 Mg m -a, Mo Ka, 2 = 0.7107/k, # = 2.42 mm -1, F(000) = 444, T = 300 K, R = 0.039 ...
Artículo
Lattice Dynamical Calculation of First-Order Thermal Diffuse Scattering in Phenothiazine
(International Union of Crystallography, 1985)
A computer program has been developed to calculate first-order thermal diffuse scattering (TDS) intensity from eigenvectors and eigenvalues of the dynamical matrix obtained within the harmonic approximation with an ...
Artículo
Structure of 1,3-Dihydro-4-[(2R)-2,5-dihydro-2-furyl]-3-phenyl-l-(p-tolyl)-2H-imidazole- 2-thione, C20HlsN2OS
(International Union of Crystallography, 1985)
Mr=334.4, orthorhombic, P212~2 ~, a= 9.366(4), b=20.616(5), c=9.137(4)A, V= 1764 (1) A 3, Z = 4, D x = 1.26 Mg m -3, 2(Mo Ka) = 0.7107 A, g = 0.18 mm -~, F(000) = 704, T= 300 K, final R--0.056 (wR =0.052) for 1979 ...
Artículo
X-Ray Structure of 8alpha-Acetoxy-1,3,4,10-Tetrahydro-1alpha,10alpha-Epoxyachillin
(International Union of Crystallography, 1986)
(5aI-I,6/~-I, 11 aH)-8a-Acetoxy- 1,5-dihydro-2- oxo-lct,10ct-epoxyguaian-6,12-olide, C~7H2206, Mr= 322.3, orthorhombic P2~212~, a= 14.964(6), b= 17.057(4), c=6.218(4)A, V=1587(1)A 3, Z=4, D,n=l.349(5), D x=l.349Mgm -3, ...