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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Microwave-assisted synthesis of porphyrins and metalloporphyrins: a rapid and efficient synthetic method
Bruno F.O. Nascimento,Marta Pineiro,Antonio M. d'A. Rocha Gonsalves,Manuela Ramos Silva,Ana Matos Beja,José A. Paixão +5 more
TL;DR: In this article, the microwave-assisted insertion of five different transition metals into the 5,10,15,20-tetraphenylporphyrin core was also achieved with high yields.
Journal ArticleDOI
SIMS matrix effects in the analysis of light elements in silicate minerals: Comparison with SREF and EMPA data
TL;DR: In this article, the authors investigated matrix effects in secondary-ion mass spectrometric (SIMS) analysis of light elements (H, Li, Be, B, and F) in epoxy-mounted in a known crystallographic orientation relative to the primary-ion beam.
Journal ArticleDOI
Novel mixed-ligand copper(I) complexes: role of diimine ligands on cytotoxicity and genotoxicity.
Valentina Gandin,Marina Porchia,Francesco Tisato,Alessandro Zanella,Emilia Severin,Alessandro Dolmella,Cristina Marzano +6 more
TL;DR: The most effective complex, [CuCl(dpq)(PCN)] (9), exhibited nanomolar cytotoxicity toward both sensitive and resistant cancer cells, but it significantly inhibited the growth of cultured normal cells.
Journal ArticleDOI
X-ray investigation of the binding of 1,10-phenanthroline and imidazole to horse-liver alcohol dehydrogenase.
Torne Boiwe,Carl-Ivar Brändén +1 more
TL;DR: It is concluded that both these inhibitors bind to the catalytic zinc atom and that upon binding they displace the water molecule that is firmly bound to this zinc atom in the apoenzyme.
Journal ArticleDOI
Anion Binding of Inorganic Phosphates by the Hexaaza Macrocyclic Ligand 3,6,9,17,20,23-Hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene
TL;DR: In this article, the interaction of mono-, di-, and tripolyphosphate anions with the various protonated forms of the hexaaza macrocyclic ligand BMXD, 3,6,9,17,20,23-hexaazatricyclo[23.111,15]triaconta-1(29),11(30),12,14,25,27,27hexaene, was investigated by potentiometric equilibrium studies.
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.