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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Structural Studies on Layered Alkylpyridinium Iodopalladate Networks
TL;DR: The reaction of alkylpyridinium iodide salts in aqueous acetonitrile with a preformed palladium iodide precursor afforded two different types of organic-inorganic phases depending on the molar ratio, characterized by thermal analysis and variable-temperature powder XRD and optical microscopy.
Journal ArticleDOI
Structure and functional properties of chemically modified horse hemoglobin. I. Determination of the functional properties.
TL;DR: Several N-substituted maleimides have been reacted with horse oxy- and deoxyhemoglobin and the physical and functional properties of the resulting derivatives have been determined.
Journal ArticleDOI
Synthesis, Structures and Luminescent Properties of σ-Alkynyl Complexes of Orthomercuriated Schiff Bases
TL;DR: In this article, a series of σ-alkynyl complexes of orthomercuriated Schiff bases of substituted benzylideneanilines and anthracenylmethyleneaniliines were synthesised in good yields by alkynylation of the mercuric chlorides of the appropriate Schiff bases with terminal alkynes RC≡CH (R = Ph, ferrocenyl, p-ferrocensylphenyl) at room temperature in a basic medium.
Journal ArticleDOI
A new occurrence of katoite and re-examination of the hydrogrossular group
TL;DR: In this paper, a new occurrence of katoite (Ca2.95Fe0.03A12.286) found near Dunabogdany (Hungary), along with its structural refinement is reported.
Journal ArticleDOI
Metal ion size selectivity of 1-Thia4, 7-diazacyclononane (9-aneN:S), and other tridentate macrocycles. A study by molecular mechanics calculation, structure determination, and formation constant determination of complexes of 9-aneN 2S
TL;DR: In this article, the authors examined the coordination chemistry of the tridentate cyclononane type macrocycles using molecular mechanics calculations, crystallography and formation constant determinations, and concluded that small metal ions coordinate best to these ligands, such that metal ions with a covalent radius of 1.25 and 1.40 fit best into 9-aneN3 and 9-ANEN3, respectively.
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.