Journal ArticleDOI
A semi-empirical method of absorption correction
TLDR
An extension of Furnas's method is described in this paper, where the variation of intensity of an axial reflection as the crystal is rotated about the goniometer axis is used to give a curve of relative transmission T against azimuthal angle ϕ for the corresponding reciprocal lattice level.Abstract:
An extension of Furnas's method is described. The variation of intensity of an axial reflection as the crystal is rotated about the goniometer axis is used to give a curve of relative transmission T against azimuthal angle ϕ for the corresponding reciprocal lattice level. Transmission coefficients for any general reflexion hkl are then given approximately by T(hkl) = [T(ϕinc) + T(ϕret)]/2 where ϕinc and ϕret are the azimuthal angles of the incident and reflected beams. Equations are derived for (ϕinc and ϕret and the accuracy of the method is discussed.read more
Citations
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Influence of solvent and weak C-H...O contacts in the self-assembled [Pt2M4{CC(3-OMe)C6H4}8] (M = Cu, Ag) clusters and their role in the luminescence behavior.
TL;DR: A remarkable quenching and a shift to higher energies in the emission is observed on changing from CH2Cl2 to THF, and for both 1 and 2, the emission spectra at 77 K varies with the concentration, showing their tendency to stack even in glass.
Journal ArticleDOI
Crystal structure of the factor for inversion stimulation FIS at 2.0 A resolution.
TL;DR: The factor for inversion stimulation (FIS) binds as a homodimeric molecule to a loose 15 nucleotide consensus sequence in DNA, which stimulates DNA-related processes, such as DNA inversion and excision, it activates transcription of tRNA and rRNA genes and it regulates its own synthesis.
Journal ArticleDOI
Non-ionic Ln(III) chelates as MRI contrast agents: Synthesis, characterisation and 1H NMR relaxometric investigations of bis(benzylamide)diethylenetriaminepentaacetic acid Lu(III) and Gd(III) complexes
TL;DR: In this paper, the synthesis of bis(benzylamide)diethylenetriaminepentaacetic acid (BBA-DTPA) and its Gd(III) and Lu (III) complexes are reported.
Journal ArticleDOI
Structure and Bonding of Diiodine Adducts of the Sulfur-Rich Donors 1,3-Dithiacyclohexane-2-thione (ptc) and 4,5-Ethylenedithio-1,3-dithiole-2-thione (ttb).
Francesco Bigoli,Paola Deplano,Andrea Ienco,Carlo Mealli,Maria Laura Mercuri,Maria Angela Pellinghelli,Gloria Pintus,Giuseppe Saba,Emanuele F. Trogu +8 more
TL;DR: It is pointed out that a major four-electron repulsion is exerted over the D-I or the I-I linkages with major consequences for their respective lengths and the perturbation theory arguments highlight the variable sp hybridization at the central iodine atom as the electronic factor of importance.
Journal ArticleDOI
Syntheses and Crystal Structures of Disulfide-Bridged Binuclear Ruthenium Compounds: The First UV−Vis, Raman, ESR, and XPS Spectroscopic Characterization of a Valence-Averaged Mixed-Valent RuIIISSRuII Core
Kazuko Matsumoto, , a,a Takaya Matsumoto,a Masaki Kawano,a Hiroshi Ohnuki,b Yushi Shichi,c and Toshikazu Nishide,Toshio Sato d +6 more
TL;DR: In this article, a triply bridged RuIII (μ-Cl)2(μ-S2)RuIII core, in which the S22- ligand bridges the two Ru atoms in a cis configuration, has been synthesized and their crystal structures have been solved.
References
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Book
International tables for X-ray crystallography
Norman Fordyce McKerron Henry,Lonsdale, Kathleen, Dame,John S. Kasper,Caroline H. MacGillavry,Gerard D. Rieck,James A. Ibers,Walter C. Hamilton +6 more
ReportDOI
A fortran program for calculating single crystal absorption corrections
D.J. Wehe,W.R. Busing,H.A. Levy +2 more
TL;DR: A Fortran program is described for calculating the absorption correction for application to single crystal x ray or neutron intensity measurements and is available in the form of symbolic punched cards.