Studies of EXAFSSpectra using Copper (II) Schiff Base complexes and Determination of Bond lengths Using Synchrotron Radiation

International Conference on Recent Trends in Physics 2016

Mishra, A.^1 ; Vibhute, V.^1 ; Ninama, S.^1 ; Parsai, N.^1 ; Jha, S.N.^2 ; Sharma, P.^1,3

School of Physics Devi Ahilya University, Khandwa Road, Indore [MP], India^1

Applied Spectroscopy Division, Bhabha Atomic Research Centre, Mumbai, India^2

School of Chemical Sciences, Devi Ahilya University, Khandwa Road, Indore [MP], India^3

关键词: Fourier transform method;    Graphical methods;    Inverse transformations;    Ortho-phenylenediamine;    Schiff base complexes;    Substituted anilines;    Synchrotron source;    X ray absorption fine structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/755/1/012051/pdf
DOI  :  10.1088/1742-6596/755/1/012051

来源: IOP

【 摘 要 】

X-ray absorption fine structure (XAFS) at the K-edge of copper has been studied in some copper (II) complexes with substituted anilines like (2Cl, 4Br, 2NO2, 4NO2 and pure aniline) with o-PDA (orthophenylenediamine) as ligand. The X-ray absorption measurements have been performed at the recently developed BL-8 dispersive EXAFS beam line at 2.5 GeV Indus-2 Synchrotron Source at RRCAT, Indore, India. The data obtained has been processed using EXAFS data analysis program Athena.The graphical method gives the useful information about bond length and also the environment of the absorbing atom. The theoretical bond lengths of the complexes were calculated by using interactive fitting of EXAFS using fast Fourier inverse transformation (IFEFFIT) method. This method is also called as Fourier transform method. The Lytle, Sayers and Stern method and Levy's method have been used for determination of bond lengths experimentally of the studied complexes. The results of both methods have been compared with theoretical IFEFFIT method.