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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Journal ArticleDOI
Synthesis and X‐ray Structures of New Mononuclear and Dinuclear Diimine Complexes of Late Transition Metals
TL;DR: In this article, the synthesis of new palladium(II), nickel(II) (2a and 2b), and cobalt(II, 3) complexes bearing the unsymmetrical, bidentate nitrogen ligand 2,6-bis(1-methylethyl)-N-(2-pyridinylmethylene)phenylamine (L) is described.
Journal ArticleDOI
Synthesis, crystal structure, EXAFS and magnetic properties of Catena [mu-tris(4-(2'-hydroxy-ethyl)-1,2,4-triazole-N1,N2) copper(II)] bis (perchlorate) trihydrate. Relevance with the structure of the Fe(II) 1,2,4-triazole spin transition molecular materials
Yann Garcia,Petra J. van Koningsbruggen,Georges Bravic,Philippe Guionneau,Daniel Chasseau,Giovanni Luca Gascarano,Jacques Moscovici,Katia Lambert,Alain Michalowicz,Olivier Kahn +9 more
TL;DR: In this paper, the first structurally characterized metal(II) chain compound containing triple N1,N2-1,2,4-triazole bridges was solved at 298 K by single-crystal X-ray analysis.
Journal ArticleDOI
X-ray diffraction and solution studies of specifically carbamylated human hemoglobin A. Evidence for the location of a proton- and oxygen-linked chloride binding site at valine 1 alpha.
ComponentDOI
The refinement and the structure of the dimer of alpha-chymotrypsin at 1.67-A resolution.
R A Blevins,A Tulinsky +1 more
TL;DR: It is concluded that the folding of a protein structure is basically independent of most of the detailed stereochemistry of its side chains, and dynamic and asymmetrical structural changes take place at the time of oligomerization leading to more energetically favorable interactions for the dimer.
ComponentDOI
Structure of a recombinant calmodulin from Drosophila melanogaster refined at 2.2-A resolution.
TL;DR: The crystal structure of calmodulin from Drosophila melanogaster as expressed in a bacterial system has been determined and refined at 2.2-A resolution and reveals a number of significant differences between the two structures.
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.