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Publication Metadata only The FT IR and laser Raman Spectral Investigation of 4 4 Bipyridily Transition Metal II Tetracyanonickelate Clathrates(Kluwer Academic Publishers, 1996-03) Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 10127The FT-IR and Raman spectra are reported of M(4,4′-bipyridyl)Ni(CN)4·nG (where M = Mn, Fe, Co, Cu or Zn and G = benzene or aniline;n = 0–2) clathrates. The host structure consists of a three-dimensional rigid lattice formed by infinite polymeric layers of {M-Ni(CN)4}∞ and 4,4′-bipyridyl bridges between the metal (M) atoms of the adjacent polymeric layers. Bidentate 4,4′-bipyridyl molecules are found to be centrosymmetric in the structure.Publication Metadata only Temperature Dependent FT IR Spectroscopic Study of The Interaction of alfa Tocopherol and alfa Tocopheryl Acetate with Phospholipid bilayers(Elsevier, 1997-08-11) Davies, J. Eric D.; AKYÜZ, SEVİM; 10127FTIR spectroscopy has been employed in order to investigate α-tocopherol (α-T) and α-tocopheryl acetate (α-TA) induced effects on the molecular organization of dimyristoyl-l-α-phosphatidylcholine (DMPC) bilayers, at various temperatures and concentrations. It was concluded that α-T interacts much more strongly than α-TA, indicating that α-T has a more polar location in the membrane than α-TA. The observed changes in the carbonyl and phosphate group vibrational modes of DMPC on addition of α-T or α-TA are discussedPublication Metadata only FT IR EDXRF and gamma Isotopic Analyses of Ashes from Coal Fired Power Plants of Turkey(Taylor and Francis Online, 1996) Varinlioğlu, Ahmet; Köse, Abdullah; Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 10127Nine ash samples collected from five coal fired power plants of Turkey have been analysed by FT-IR, EDXRF and γ -isotopic analyses methods. IR spectroscopy together with mineralogical analysis is found to be a useful method for investigating the inorganic chemical composition of the ashes which is an inherently variable material due to differences in the inorganic chemical composition of the source coal and in ash collection. Gamma-isotopic analysis indicated that all samples contained Ra-226, U-238 and Th-232. On the other hand Cs-137 (16.3 pCi/g) was found only in the ash sample collected from the Yatağan coal fired power plant. An ash sample taken from the electro-filter of the Ambarli, a fuel oil fired-power plant of Turkey, was also analysed for comparision and found that it contained least amount of U-238.Publication Metadata only FT IR and FT Raman Spectral Investigations of Anatolian Attapulgite and its Interaction with4 4 Bipyridyl(Elsevier, 1995-04-01) Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 10127The adsorption of 4,4′-bipyridyl by natural attapulgite from Anatolia (Turkey) has been studied using vibrational spectroscopy. Investigations of Fourier-transform infrared and Fourier-transform Raman spectra of adsorbed 4,4′-bipyridyl indicate the presence of physical and chemical sorbed surface species. No anionic surface species has been observed. It is proposed that chemisorbed 4,4′-bipyridyl molecules are coordinated to either Lewis acidic centers or surface hydroxyls as monodentate ligands.Publication Metadata only A Vibrational Spectroscopic Study of the Adsorption of 4 4 Bipyridiyl by Smectite Group Clay Minerals From Anatolia Turkey(Kluwer Academic Publishers, 1993-06) Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 1012The adsorption of 4,4′-bipyridyl by natural sepiolite and smectite group clay minerals (bentonite, hectorite and saponite) from Anatolia (Turkey) has been studied using vibrational spectroscopy. Investigation of Fourier-transform infrared and Fourier-transform Raman spectra of adsorbed 4,4′-bipyridyl indicate the presence of chemisorbed species. However, any evidence for the generation of anionic species on the surface of the phyllosilicates has not been detected. It is proposed that the adsorbed bipyridyl molecules on sepiolite are centrosymmetric and H-bonded to the surface hydroxyls through both the nitrogen lone pairs as bidentate ligands. The adsorbed bipyridyl molecules on the smectite group clays are coordinated to exchangeable cations both directly and also indirectly through water as monodentate ligands. XRD patterns of the clays studied are also recorded.Publication Metadata only An infrared and raman spectroscopic study of transition metal (II) halide quinoline complexes(Elsevier, 1988-05) Yurdakul, S.; Davies, J. Eric D.; AKYÜZ, SEVİM; 10127In this study infrared (4000-200 cm−1) and Raman (3500-50 cm−1) spectra are reported for the metal (II) halide quinoline complexes of the following stoichiometries: Mq2Cl2(MMn, Fe, Co, Ni, Cu, Zn or Hg; qquinoline) MqX2 (MCd or Hg; XCl, Br, I); Mq2I2(MCd or Zn) and Mq2Br2(MCo, Ni, Cu or Zn). The MqX2, Hgq2Cl2 and Cdq2I2 complexes have been prepared for the first time. The analysis of the vibrational spectra indicates that there are some structure-spectra correlations.Publication Metadata only Solid-state vibrational spectroscopy: Part 11. An infrared and raman vibrational spectroscopic study of metal(II) halide aniline complexes(Elsevier, 1983) Davies, J. Eric D.; AKYÜZ, SEVİM; 10127Infrared (4000−200 cm−1) and Raman (3500−50 cm−1) spectra are reported for metal(II) halide aniline complexes of the following stoichiometries: (MX2an2) (M Co, Ni or Hg, X Cl; M Mn, X Cl or Br; M Zn or Cd, X Cl, Br or I); (MX2an3) (M Mn, X Cl or Br; M Ni, X Cl); (CdCl2an) and an assignment is proposed for all the observed bands. Low-temperature (83 K) IR spectra are also reported and it is noted that whilst the aniline ring and CH mode values are virtually insensitive to temperature, the NH2 rocking and metal-ligand stretching mode values increase with decreasing temperature, whilst the NH2 stretching mode values decrease with decreasing temperature.Publication Metadata only Fourier Transform Infrared and Raman Spectra of Metal Halide Complexes of 3,5-Lutedine in Relation to Their Structures(1996-01) Yurdakul, Şenay; Davies, J. Eric D.; AKYÜZ, SEVİM; 10127Fourier transform infrared (4000-200 cm) and Raman (3500-50 cm) spectra are reported for metal(II) halide 3,5-lutidine (3,5-dimethylpyridine) complexes of the following stoichiometries: M(3,5L)4X2 M=Co or Ni, X=C1 or Br; M=Mn or Cu, X=Br; M=Cd, X=I; M(3,5L)3X2 M=Fe, X=C1; M=Cu, X=Br; Hg(3,5L) X2 X=C1 or Br.Vibrational assignments are given for all the observed bands. Some structure- spectra correlations are found. For a given series of isomorphous complexes the sum of the difference between the liquid and ligand values of the vibrational modes of 3,5-lutidine is found to increase in the order of the second ionization potentials of the metals. The frequency shifts are also found to depend on the halogen.Publication Metadata only A Fourier-transform infrared and laser-Raman spectroscopic investigation of 4,4′-bipyridyl-transition metal(II) tetracyanonickelate clathrates(1996-03) Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 10127The FT-IR and Raman spectra are reported of M(4,4-bipyridyl)Ni(CN)4nG (where M = Mn, Fe, Co, Cu or Zn and G = benzene or aniline;n = 0–2) clathrates. The host structure consists of a three-dimensional rigid lattice formed by infinite polymeric layers of {M-Ni(CN)4} and 4,4-bipyridyl bridges between the metal (M) atoms of the adjacent polymeric layers. Bidentate 4,4-bipyridyl molecules are found to be centrosymmetric in the structure.Publication Metadata only Adsorption of 2 2 Bipyridyl onto Sepiolite Attapulgite and Smectite Group Clay Minerals from Anatolia FT IR and FT Raman Spectra of Surface and Intercalated Species(Kluwer Academic Publishers, 1994-06) Davies, J. Eric D.; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL; 10127The adsorption of 2,2′-bipyridyl by natural sepiolite, attapulgite, hectorite, saponite and natural and ion exchanged (Mn, Fe, Co, Ni, Cu, Zn or Sn) bentonites has been investigated by FT-IR and FT-Raman spectroscopy. Spectroscopic results indicate that most of the adsorbed molecules are coordinated to either exchangeable cations (in the case of smectite group clays) or Lewis acidic centres (in the case of sepiolite and attapulgite) as bidentate ligands. The formation of monoanionic surface species has also been detected, to a relatively small extent. No physisorbed surface species has been observed. XRD patterns and UV-visible spectra of the samples are also recorded for additional information.