Fizik Bölümü / Department of Physics

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Browsing Fizik Bölümü / Department of Physics by Subject "2-aminopyridine"

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    Adsorption Of 3-And 4-Aminopyridine On Loughlinite-An IR Spectroscopic Study
    (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2010-05-26) AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; TR10127; TR111424
    In this study adsorption of 3- and 4-aminopyridine on loughlinite (Na-sepiolite) have been investigated by FT-IR spectroscopy. Spectroscopic results indicate that sorbed aminopyridine molecules onto loughlinite are coordinated to Lewis acidic centers, zeolitic/bound water molecules, and surface silanol groups by hydrogen bonding interaction through pyridine ring nitrogen lone pairs. Some of the adsorbed molecules coordinate to Bronsted acidic centers and aminopyridinium cationic surface species are also generated. (C) 2010 Elsevier B.V. All rights reserved.
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    Calculation and analysis of IR spectrum of 2-aminopyridine
    (Elsevier, 1999-05-25) Akalın, Elif; Büyükmurat, Y.; Özel, Ayşen E.; AKYÜZ, SEVİM; 46357; 110745; 10127
    Normal coordinate analysis of 2-aminopyridine (2AP) and ND2-pyridine have been performed in valance force field approximation. 2AP was taken as planar because of the low barrier to amino group inversion. The IR absorption intensities have been calculated and the electro–optical parameters (EOP) were fitted to experimental data in order to produce the experimental relative intensities. The created force field and EOP reproduce the IR spectrum of the molecule studied well.