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
Role of B13 Glu in insulin assembly. The hexamer structure of recombinant mutant (B13 Glu-->Gln) insulin.
Graham A. Bentley,J. Brange,Zygmunt S. Derewenda,Eleanor J. Dodson,Guy Dodson,J. Markussen,Anthony J. Wilkinson,A. Wollmer,B. Xiao +8 more
TL;DR: The low potency of the B13 Gln insulin suggests the residue influences the hormone's conformation, and the zinc-free hexamer assumes a quaternary structure seen in the native 4Zn insulin hexamer, and normally associated only with high chloride ion concentrations in the medium.
Journal ArticleDOI
Carbon−Carbon Coupling of Two Alkenyl Fragments on a Saturated Compound
TL;DR: In this paper, the coordination geometry around the ruthenium atom can be rationalized as a square pyramid with the α,β-unsaturated alkenyl ligand located in the apex.
Journal ArticleDOI
[Fe(nsal2trien)]SCN, a new two-step iron(III) spin crossover compound, with symmetry breaking spin-state transition and an intermediate ordered state.
Bruno J. C. Vieira,Joana T. Coutinho,Isabel C. Santos,Laura C. J. Pereira,João C. Waerenborgh,Vasco Gama +5 more
TL;DR: The synthesis of the iron(III) complex of the hexadentate Schiff base ligand nsal2trien obtained from the condensation of triethylenetetramine and 2 equiv.
Journal ArticleDOI
Magnetic studies on hexaiodorhenate(IV) salts of univalent cations. Spin canting and magnetic ordering in K2[ReI6] with Tc = 24 K.
Ricardo González,Raúl Chiozzone,Carlos Kremer,Giovanni De Munno,Francesco Nicolò,Francesc Lloret,Miguel Julve,Juan Faus +7 more
TL;DR: The ionic salts of rhenium(IV) have been synthesized, and the structures of two of them were determined by single-crystal X-ray diffraction, and they describe a tetragonally distorted body-centered cubic structure.
Journal ArticleDOI
Temperature, composition, and f O2 effects on intersite distribution of Mg and Fe 2+ in olivines
TL;DR: In this paper, single-crystal X-ray structure refinement of natural olivines equilibrated at high temperature under controlled oxygen fugacity (fO2) conditions, coupled with a structure-energy model were used to establish the influence of T, fO2 and bulk chemistry on intracrystalline disorder.
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.