Intensitätsstatistik für Strukturen mit Überstruktureffekten
Abstract
It is shown that the mean expected X-ray intensities of main and superstructure reflexions can be described by different functions of sin 2π|h| · |δ|/(2π|h| · |δ| when the intensities are obtained from a crystal structure in which all atoms fullfil one or more pseudotranslations approximately. In these formulas |δ| is a measure of the mean deviations of the atoms from their ideal positions. If the pseudotranslations are not taken into account in the normalising procedure, similar functions for the expected mean E2-values can be derived, from which the mean values of E2 depending on |δ| are obtained by integration. The relations to formulas published earlier are discussed. It can furthermore be demonstrated that real structures exist in which the pseudotranslations can not be recognized by the different mean intensities of main and superstructure reflexions but by their variation along |h|.
Artikel in diesem Heft
- Limits of isomorphous substitution of CnH2n + 2 chains in paraffins as a function of temperature
- Crystal structure analysis from powder diffraction data
- Intensitätsstatistik für Strukturen mit Überstruktureffekten
- Crystal and molecular structure of 10-methoxy-8, 8-dimethyl 2H,8H-benzo (1,2-b:5,4-b′-dipyron-2-one) (Luvangetin)
- Crystal structure of a complex of glycine with zinc chloride
- Ratio image seeking with multiple-wavelength X-ray diffraction data
- Verfeinerung der Kristallstruktur von Anthophyllit vom Ochsenkogel/Gleinalpe, Österreich
- Präzisionsbestimmung des Skalierungsfaktors für Relativwerte von Strukturamplituden mit Messung von Absolutintensitäten an Pulverpräparaten
- The X-ray revised stereochemistry of the hydroperoxide of atractyligenin
- Crystal structures of N-benzylcarbonyl-α-aminoisobutyric acid mono- and tripeptide methyl ester derivatives
- The crystal structure of U4Ni5Al18
- The crystal structure of Cs2Nd(N3)5
- The crystal structure of Tl5Te3 and its relationship to the Cr5B3 type
- A phosphorous ylide with a secondary P…O bond. The crystal structure of a-[6-furazano][3,4-b]-quinoxalinyl-a-carbethoxymethylenetriphenylphosphorane(butene-2,3,4-dimethylhexene-3)solvate
- New data for 2-thiophenecarboxylic acid
- Elastic and thermoelastic properties of twelve adducts of betaine, (CH3)3NCH2COO, with H2O, HCl, HBr, HI, HNO3, H2SO4, H3PO3, H3PO4, 1,4-toluene sulfonic acid, MnCl2 and KBr
Artikel in diesem Heft
- Limits of isomorphous substitution of CnH2n + 2 chains in paraffins as a function of temperature
- Crystal structure analysis from powder diffraction data
- Intensitätsstatistik für Strukturen mit Überstruktureffekten
- Crystal and molecular structure of 10-methoxy-8, 8-dimethyl 2H,8H-benzo (1,2-b:5,4-b′-dipyron-2-one) (Luvangetin)
- Crystal structure of a complex of glycine with zinc chloride
- Ratio image seeking with multiple-wavelength X-ray diffraction data
- Verfeinerung der Kristallstruktur von Anthophyllit vom Ochsenkogel/Gleinalpe, Österreich
- Präzisionsbestimmung des Skalierungsfaktors für Relativwerte von Strukturamplituden mit Messung von Absolutintensitäten an Pulverpräparaten
- The X-ray revised stereochemistry of the hydroperoxide of atractyligenin
- Crystal structures of N-benzylcarbonyl-α-aminoisobutyric acid mono- and tripeptide methyl ester derivatives
- The crystal structure of U4Ni5Al18
- The crystal structure of Cs2Nd(N3)5
- The crystal structure of Tl5Te3 and its relationship to the Cr5B3 type
- A phosphorous ylide with a secondary P…O bond. The crystal structure of a-[6-furazano][3,4-b]-quinoxalinyl-a-carbethoxymethylenetriphenylphosphorane(butene-2,3,4-dimethylhexene-3)solvate
- New data for 2-thiophenecarboxylic acid
- Elastic and thermoelastic properties of twelve adducts of betaine, (CH3)3NCH2COO, with H2O, HCl, HBr, HI, HNO3, H2SO4, H3PO3, H3PO4, 1,4-toluene sulfonic acid, MnCl2 and KBr
