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~ Crystallography ~ Prof. Yu Wang Office: A507 Telephone: 3366- 1653 2007.2.27~2007.6.1 5
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Crystallography Chapter I. Introduction II. Crystal Lattice Direct and reciprocal lattice; lattice centering; Miller indices; cell orthorgonalization III. Group Theory Application Symmetry; classification; space group; cell transformation IV. Atomic Scattering S cattering amplitude; anomalous scattering; thermal vibration V. Crystal Diffraction S tructural amplitudes; centric and non-centric cases; systematic absences VI. Fourier Synthesis relationship between structural amplitudes and electron density VII. Structure Determination Analysis Data collection; data reduction, Phase determination, Fourier transform, Least squares, Model construction, Error analysis VIII. Special topics
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References : 1. Azoroff, “Elements of X-ray Crystallograpy” 2. Stout & Jensen, 2nd Ed. “X-ray Structure Determination” 3. Glusker & Trueblood, 2nd Ed. “Crystal Structure Analysis” 4. Giacovazzo et al, “Fundamentals of Crystallography” Oxford Sci 5. Mckie, “Essentials of Crystallography” 6. Ladd & Palmer, “Structure Determination by X-ray Crystallography” 7. 晶體繞射研習會論文集 8. “International Tables for X-ray Crystallography” Vol 1-4, A –F on line version available Data Bank 1. CCSD: organic and organometallic compds 2.ICSD: inorganic compds 3.PDB: protein data bank 4.PXRD: powder data
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X-ray Diffraction General Introduction: Electromagnetic spectrum What is X-ray Interaction between X-ray and material Analogies between light microscopy and X-ray diffraction Diffraction pattern from equidistant parallel slits Diffraction pattern from one- and two- dimensional arrays Relation of the Crystal lattice and Reciprocal lattice
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Electromagnetic spectrum
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What is X-ray
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X-ray Tube
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What is X-ray
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White radiation Characteristic X-ray
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Synchrotron radiation
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Incident Beam (X-ray) Absorbing Substance Fluorescent X-rays Transmitted Bam Heat Scattered X-rays Electrons Unmodified (Coherent) Compton modified (Incoherent) Compton recoil electrons Auger electrons Photoelectrons Introduction Interaction Between X-ray and material
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Analogies between light microscopy and X-ray diffraction
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Diffraction pattern from equidistant parallel slits
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Diffraction pattern from one- and two- dimensional arrays
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Relation of the Crystal lattice and Reciprocal lattice
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Molecules in Real space Diffraction pattern (reciprocal space)
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X-ray precession diagram of the hk0 zone of a hexagonal crystal of catalase Penicillium vitale (sp. Gr. P3 1 21, a 145Å, c 180Å), 9 . Cu K radiation 500Å100Å diffraction reciprocal space image real space
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Bragg spectrometer Bragg Equation wave n wave 3 wave 2 wave 1 Constructive Destructive
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Debye Scherrer Camera
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Powder diffractometer
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