International Tables for Crystallography. Volume C: Mathematical, Physical and Chemical Tables. Kluwer Academic Publishers, Dordrecht/Boston/London 1992 (published for the International Union of Crystallography), 883 Seiten, ISBN 0‐792‐3‐16‐38X

Wilson, A. J. C.; Geist, V.

doi:10.1002/crat.2170280117

Cited by 190 publications

(208 citation statements)

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“…Neutral atom scattering factors and values used to calculate the linear absorption coefficient are from the International Tables for X-ray Crystallography (1992). 23 All figures were generated using ORTEP.…”

Section: Structure Refinement Of Lmentioning

confidence: 99%

Synthesis, characterization, and photophysical properties of a thiophene-functionalized bis(pyrazolyl) pyridine (BPP) tricarbonyl rhenium(i) complex

et al. 2010

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A bromo tricarbonyl rhenium(I) complex with a thiophene-functionalized bis(pyrazolyl) pyridine ligand (L), ReBr(L)(CO) 3 (1), has been synthesized and characterized by variable temperature and COSY 2-D 1 H NMR spectroscopy, single-crystal X-ray diffraction, and photophysical methods. Complex 1 is highly luminescent in both solution and solid-state, consistent with phosphorescence from an emissive 3 MLCT excited state with an additional contribution from a LC 3 (p→ p*) transition. The single-crystal X-ray diffraction structure of the title ligand is also reported.

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Section: Structure Refinement Of Lmentioning

confidence: 99%

Synthesis, characterization, and photophysical properties of a thiophene-functionalized bis(pyrazolyl) pyridine (BPP) tricarbonyl rhenium(i) complex

et al. 2010

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“…The accuracy of the structural model is estimated by the crystallographic index, R cryst , and then verified by means of chemical validation. Presently the most popular atomic FFs used in crystallography are listed in the International Tables for Crystallography [14]. The analytical expression (7) may be used as a possible alternative.…”

Section: Further Applications and Prospectsmentioning

confidence: 99%

“…Such numerical calculations can be found in several tables [12][13][14]. Simultaneously, there has been many attempts toward analytical evaluations of atomic FFs.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, empirical formulae for the FF have been obtained and largely used in the literature (see, for instance, Refs. [23][24][25], and also International Table of Crystallography (ITC) [14], where the atomic FF is analytically expressed by means of four gaussians whose parameters are obtained from least square fitting of numerical values). An analytical formula that can provide easy access to reliable FF values for a wide linear momentum range can thus be very profitable for users, especially for experimentalists.…”

Section: Introductionmentioning

confidence: 99%

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Analytical evaluation of atomic form factors: Application to Rayleigh scattering

Safari

Santos

Amaro

et al. 2015

Journal of Mathematical Physics

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Atomic form factors are widely used for the characterization of targets and specimens, from crystallography to biology. By using recent mathematical results, here we derive an analytical expression for the atomic form factor within the independent particle model constructed from nonrelativistic screened hydrogenic wavefunctions. The range of validity of this analytical expression is checked by comparing the analytically obtained form factors with the ones obtained within the Hartee-Fock method. As an example, we apply our analytical expression for the atomic form factor to evaluate the differential cross section for Rayleigh scattering off neutral atoms.

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“…Given that the mean inner potential of carbon is 6.8 V [65] and that good contrast can be achieved even if the phase shift is 1 radian away from π, the optimal phase plate should have a thickness of 71 nm but can be in error by ±24 nm and still achieve good contrast. It is more likely that poor image contrast will result from the difficulties in positioning the aperture.…”

Section: Phase Plate Imagingmentioning

confidence: 99%

Imaging flux vortices in type II superconductors with a commercial transmission electron microscope

Loudon¹,

Midgley²

2009

Ultramicroscopy

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Flux vortices in superconductors can be imaged using transmission electron microscopy because the electron beam is deflected by the magnetic flux associated with the vortices. This technique has a better spatial and temporal resolution than many other imaging techniques and is sensitive to the magnetic flux density within each vortex, not simply the fields at the sample surface. Despite these advantages, only two groups have successfully employed the technique using specially adapted instruments. Here we demonstrate that vortices can be imaged with a modern, commercial transmission electron microscope operating at 300 kV equipped with a field emission gun, Lorentz lens and a liquid helium cooled sample holder. We introduce superconductivity for non-specialists and discuss techniques for simulating and optimising images of flux vortices. Sample preparation is discussed in detail as the main difficulty with the technique is the requirement for samples with very large (>10µm), flat areas so that the image is not dominated by diffraction contrast. We have imaged vortices in superconducting Bi 2 Sr 2 CaCu 2 O 8-δ and use correlation functions to investigate the ordered arrangements they adopt as a function of applied magnetic field.

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International Tables for Crystallography. Volume C: Mathematical, Physical and Chemical Tables. Kluwer Academic Publishers, Dordrecht/Boston/London 1992 (published for the International Union of Crystallography), 883 Seiten, ISBN 0‐792‐3‐16‐38X

Cited by 190 publications

References 0 publications

Synthesis, characterization, and photophysical properties of a thiophene-functionalized bis(pyrazolyl) pyridine (BPP) tricarbonyl rhenium(i) complex

Synthesis, characterization, and photophysical properties of a thiophene-functionalized bis(pyrazolyl) pyridine (BPP) tricarbonyl rhenium(i) complex

Analytical evaluation of atomic form factors: Application to Rayleigh scattering

Imaging flux vortices in type II superconductors with a commercial transmission electron microscope

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