Applications of dynamical diffraction under locally plane wave conditions: defects in nearly perfect crystals and X-ray refractometry

Mocella, Vito; Epelboin, Y.; Guigay, Jean-Pierre; Härtwig, J.

doi:10.1107/s0108767301006985

Acta Cryst Sect A

2001

DOI: 10.1107/s0108767301006985

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Applications of dynamical diffraction under locally plane wave conditions: defects in nearly perfect crystals and X-ray refractometry

Vito Mocella

Y. Epelboin

Jean-Pierre Guigay

et al.

Abstract: In a previous paper, the concept of a locally plane wave was explained theoretically. In such a configuration, the fringe pattern recorded on the film can be considered as a phase analyser. Here the experimental analysis is presented, showing examples of interesting applications to X-ray refractometry and to the visualization of the strain field around isolated defects.

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Cited by 6 publications

References 23 publications

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Self-Assembly of a Series of Novel Metal−Organic Compounds Containing Ferrocenecarboxylate Components

Hou

et al. 2003

Inorg. Chem.

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Using FcCOONa (Fc = (eta(5)-C(5)H(5))Fe(eta(5)-C(5)H(4))) as starting material, we obtained an unprecedented metal-organic coordination polymer containing ferrocenecarboxylate components [[Pb(2)(FcCOO)(eta(2)-FcCOO)(mu(2)-eta(2)-FcCOO)(mu(3)-eta(2)-FcCOO)(CH(3)OH)].1.5CH(3)OH.H(2)O](n) (1), tetramer [Zn(4)(mu(2)-FcCOO)(6)(mu(4)-O)] (2), and coordination polymers [Pb(FcCOO)(mu(2)-FcCOO)(bpe)](n) (3) (bpe = 1,2-bis(4-pyridyl)ethene), [[Zn(FcCOO)(2)(bpt)].2.5H(2)O](n) (4) (bpt = N,N'-bis(3-pyridylmethyl)thiourea), and [Zn(FcCOO)(eta(2)-FcCOO)(bbp)](n) (5) (bbp = 4,4'-trimethylene-dipyridine). Compounds 1 and 2 are formed by ferrocenecarboxylate units coordinating with Pb(II) or Zn(II). In polymer 1, ferrocenecarboxylate units have four kinds of coordinate modes; just these novel coordinate modes lead to the unprecedented one-dimensional polymer where two kinds of rhomboids are arranged alternatively along the chain. Compound 2 is a tetramer, in which a distinct connectivity of the six ferrocene units is established through the four Zn atoms. Compounds 3-5 are obtained by organic ligands bridging Pb(II) or Zn(II), leading to a new type of metal-organic coordination polymer.

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Self-Assembly of a Series of Novel Metal−Organic Compounds Containing Ferrocenecarboxylate Components

Hou

et al. 2003

Inorg. Chem.

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Novel Pb(II), Zn(II), and Cd(II) Coordination Polymers Constructed from Ferrocenyl-Substituted Carboxylate and Bipyridine-Based Ligands

Hou

et al. 2003

Inorg. Chem.

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Treatment of two kinds of ferrocenyl-substituted carboxylate ligands (3-ferrocenyl-2-crotonic acid, HOOC-CH=(CH(3))CFc (Fc=(eta(5)-C(5)H(5))Fe(eta(5)-C(5)H(4))) or O-ferrocecarbonyl benzoic acid, o-HOOCC(6)H(4)COFc with Pb(OAc)(2).3H(2)O, Zn(OAc)(2).2H(2)O, or Cd(OAc)(2).2H(2)O) resulted in four novel ferrocene-containing coordination polymers [[Pb(mu(2)-eta(2)-OOCCH=(CH(3))CFc)(2)].MeOH](n) (1), [[Zn(o-OOCC(6)H(4)COFc)(2)(4,4'-bipy)(H(2)O)(2)].2MeOH.2H(2)O](n) (4,4'-bipy = 4,4'-bipyridine) (2), [[Cd(o-OOCC(6)H(4)COFc)(2)(bpe)(MeOH)(2)].2H(2)O](n) (bpe = 1,2-bis(4-pyridyl)ethene) (3), and [Pb(o-OOCC(6)H(4)COFc)(eta(2)-o-OOCC(6)H(4)COFc)(bpe)](n)() (4). Their crystal structures have been characterized by single X-ray determinations. In polymer 1, Pb(II) ions are bridged by tridentate FcC(CH(3))=CHCOO(-) anions, forming an infinite chain [Pb(mu(2)-eta(2)-OOC=CH(CH(3))CFc)(2)](n). In polymers 2-4, there are three kinds of components, metal ions, o-FcCOC(6)H(4)COO(-) units, and organic bridging ligands. The bipyridine-based ligands connect metal ions leading to a one-dimensional chain with o-FcCOC(6)H(4)COO(-) units acting as monodentate or chelate ligands in the side chain. Such coordination polymers containing ferrocenyl-substituted carboxylate and bipyridine-based ligands are very rare. The solution-state differential pulse voltammetries of polymers 1-4 were determined. The results indicate that the half-wave potential of the ferrocenyl moieties is influenced by the Pb(II) ions in polymer 1 and strongly influenced by Zn(II), Cd(II), or Pb(II) ions in polymers 2-4. The thermal properties of the four polymers were also investigated.

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Analyzer-based phase contrast imaging and phase retrieval using a rotating anode x-ray source

Vine

Paganin

Pavlov

et al. 2007

Applied Physics Letters

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We have performed an analyzer crystal based phase contrast imaging (ABI) experiment using a rotating anode x-ray source. The use of such an incoherent source demonstrates the potential of ABI as a quantitative characterization tool for the laboratory environment. A phase contrast image of a plastic phantom was recorded on high resolution x-ray film and the projected thickness was retrieved from a single image. The projected thickness recovered from the phase contrast image was shown to quantitatively agree with a reference optical microscope measurement.

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Applications of dynamical diffraction under locally plane wave conditions: defects in nearly perfect crystals and X-ray refractometry

Cited by 6 publications

References 23 publications

Self-Assembly of a Series of Novel Metal−Organic Compounds Containing Ferrocenecarboxylate Components

Self-Assembly of a Series of Novel Metal−Organic Compounds Containing Ferrocenecarboxylate Components

Novel Pb(II), Zn(II), and Cd(II) Coordination Polymers Constructed from Ferrocenyl-Substituted Carboxylate and Bipyridine-Based Ligands

Analyzer-based phase contrast imaging and phase retrieval using a rotating anode x-ray source

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