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Mostrando ítems 31-36 de 36
Artículo
The Conformation and Crystal Structure of meso-2,10-Dimethyl- 3,1 l-dimethoxycarbonyl- 1,6,9,13-tetraoxadispiro[4.2.4.2]tetradeca-2,10-diene
(International Union of Crystallography, 1979)
The crystal and molecular structure of the title compound, C16H20Os, has been determined by singlecrystal X-ray diffraction. The compound crystallizes in the monoclinic space group P2t/c with two molecules in a cell of ...
Artículo
Structure and Molecular Conformation of l-(4-Acetyl-5-methyl-2-furyl)- 1,3-dideoxy-3-nitro-fl-D-xylopyranose
(International Union of Crystallography, 1980)
The crystal structure of C I2HIsNO7 has been determined at room temperature. Crystals are tetragonal, space group P432~2, Z = 8, with a -- 12.039 (1), c = 17.979 (4)A. 1304 observed reflexions contributed to the ...
Artículo
X-ray Structure and Molecular-Packing Analysis of a Glucofuranosoimidazolidine- 2-thione
(International Union of Crystallography, 1986)
1-(4-Bromophenyl)-3-ethyl-(3,5,6-tri-Oacetyl- 1,2-dideoxy-~t-L-glucofuranoso)[2,1-d]imidazolidine- 2-thione,* C21H25BrN2OTS, M,= 529.40, orthorhombic, P2~2121, a= 12.056 (7), b= 22.420 (9), c =8.841 (2)A, V=2390(2) A3, ...
Artículo
Plastic deformation of CoO single crystals
(EDP Sciences, 1980)
Constant strain rate compressions along < 001 > have been performed on CoO single crystals (ε ∼ 6 x 10-5 s-1). Yield stresses and work hardening rates have been measured between 77 K and 1 400 K; CoO is very strong when ...
Artículo
Fluage de monocristaux de NiO
(European Physical Society (EPS), 1978)
NiO single crystals have been subjected to constant-load compressive creep along (100). Stresses between 50 MPa and 120 MPa and temperatures between 950 °C and 1 200 °C were studied. The activation energy observed suggests ...
Artículo
The Crystal Structure and Molecular Conformation of 3,7-Dichlorophenoselenazine
(International Union of Crystallography, 1974)
The crystal structure of SeC12NCI2H7 has been solved by Patterson and Fourier methods and refined to an R of 7-5 % by full-matrix least-squares methods. The unit cell is orthorhombic, with a-- 7-995 (3), b = 23.808 (1), ...