The Structure determination of crystal of 2,4 dimethoxybenzylidene-2-hydroxyaniline by x-ray diffraction method

THE STRUCTURE DETERMIMATION OF CRYSTAL OF 2,4DIMETHOXYBENZYLIDENE-2-HYDROXYANILINE BY X-RAY DIFFRACTION METHOD (M. Sc. Thesis) Nefise DİLEK GAZI UNIVERSITY INSTITUTE OF SCIENCE AND TECHNOLOGY January 2000 ABSTRACT In this study, the structure of crystal which parameters are given as below has been determinated by x-ray diffraction method. Ci5HI5N03: a = 9.732(2) Â, b = 14.299(2) Â, c = 19.083(3) Â, a = 90.00°, (3 = 90.00°, y = 90.00°, Orthorhombic P 2ı2ı2, (No:19). M = 514.56 a.m.u., Z - 4, V = 2656.9 (8) A3, Dx = 1.286 gr/cm3, T = 293 (2) K, XMoKa = 0.71073 Â, u( MoK« ) = 0.09 mm"1, R = 0.0615, coR = 0.2133, GooF =1.521, (A/pU =0.052, Apmax = 0.197 eA'\ Apmin = -0.203 eA°. In this study data collection and Lorentz-Polarization corrections were performed by the use of CAD-4 diffractometer. An empirical absorbtion correction based on T-scan method was applied to collected data. The crystal structure was solved by direct methods by the use of SHELXS-86 software. The structure refinement was carried out by using full-matrix least-square method by the use of SHELXL-97 software. The molecular graphic of crystal was drawn by ORTEP-III plotting program. Science code Key words Page number Adviser 404.05.01 X-ray, diffraction, crystal structure determination 104 Yrd.Doç.Dr. Bilal GÜNEŞ