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Tin Selenide Thin Films Prepared Through Combination of Chemical Precipitation and Vacuum Evaporation Technique
Z. Zainal 1, S. Nagalingam 1, A. Kassim 1, M.Z. Hussein 1, W.M.M. Yunus 2
1Department of Chemistry, University Putra Malaysia, Selangor, Malaysia
2Department of Physics, University Putra Malaysia, Selangor, Malaysia
New Trends in the Investigations of Macrocyclic Magnets
J. Mroziński1, A. Tomkiewicz1, M. Nahorska1, A. Skorupa1, B. Korybut-Daszkiewicz2
1Faculty of Chemistry, University of Wrocław, Poland
2Institute of Organic Chemistry, Polish Academy of Sciences, Warszawa, Poland
Thiolato-bridged Copper Complexes with N,N,S-tridentate Ligands
T. Kotera1, A. Fujita1, M. Mikuriya1, M. Handa2
1Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Japan
2Department of Material Science, Interdisciplinary Faculty of Science and Engineering, Shimane University, Japan
Structural Effects on Magnetism of Pyridyl Nitroxide Complexes of Ruthenium(II, III) Pivalate Dimers
M. Handa1, Y. Sayama2, M. Mikuriya2, I. Hiromitsu1, K. Kasuga1
1Department of Material Science, Interdisciplinary Faculty of Science and Engineering, Shimane University, Japan
2Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Japan
Metal Complexes Immobilised In/On Porous Matrices - Possible Enzyme Mimics
I. Labádi1, I. Szilágyi1, N.I. Jakab2, K. Hernádi3, I. Pálinkó2
1Department of Inorganic and Analytical Chemistry, University of Szeged, Hungary
2Department of Organic Chemistry, University of Szeged, Hungary
3Department of Applied and Environmental Chemistry, University of Szeged, Hungary
Intramolecular Electron Transfer on the Vibrational Timescale in Mixed Valence Ruthenium Clusters
N. Imai, T. Hamaguchi, T. Yamaguchi, T. Ito
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
Copper(I) Complexes as Potential CVD Precursors - Studies in the Liquid State and Gas Phase
I. Szymańska, R. Kucharek, E. Szłyk
Department of Chemistry, Nicolaus Copernicus University, Toruń, Poland
Spin Crossover in a Supramolecular FeII-FeIII System
H. Ohta1, Y. Sunatsuki1, Y. Ikuta2, N. Matsumoto2, S. Iijima3, H. Akashi4, T. Kambe5, M. Kojima1
1Department of Chemistry, Faculty of Science, Okayama University,Tsushima, Japan
2Department of Chemistry, Faculty of Science, Kumamoto University, Japan
3National Institute of Advanced Industrial Science and Technology, Japan
4Research Institute of Natural Sciences, Okayama University of Science, Ridai-cho, Japan
5Department of Physics, Faculty of Science, Okayama University, Tsushima, Japan
Abstract
The structure of [FeII(H3L)](ClO4)2·3H2O, where H3L is a tripodal hexadentate ligand derived from the 1:3 condensation of tris(2-aminoethyl)amine and 4-formylimidazole, has been determined by X-ray crystallography at 113 and 293°K. A spin transition was indicated from the Fe-N bond distances. The temperature dependence of the magnetic susceptibility revealed that the complex undergoes a gradual spin transition in the temperature range 150-270°K. A mixed-valence complex, [FeII(H3L)][FeIII(L)](BF4)2·1.5H2O, was prepared by the controlled deprotonation of the protonated species, [FeII(H3L)](BF4)2·1.5H2O, under aerobic conditions, and the X-ray structure was determined at 293°K. Two species, [FeII(H3L)]2+ and [FeIII(L)], are linked by imidazole-imidazolate (NH···N) hydrogen bonds to form a puckered sheet structure. Magnetic susceptibility measurements and Mössbauer spectra provided evidence of spin-crossover at both the FeII and FeIII sites. There are three accessible electronic states: (LS FeII-LS FeIII), (HS FeII-LS FeIII), and (HS FeII-HS FeIII) that occur in passing from lower to higher temperatures.
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Download article (PDF)Spin-entropy Driven Charge Transfer Phase Transition in Iron Mixed-Valence System
N. Kojima, M. Itoi, Y. Ono, M. Okubo, M. Enmoto
Graduate School of Arts and Sciences, The University of Tokyo, Japan
Zeta Potential and Doping in Polyaniline Dispersions
D.W.O. de Medeiros1, D.S. dos Santos2, T.N.C. Dantas1, M.R. Pereira1, A. Giacometti3, J.L.C. Fonseca1
1Departamento de Química Universidade Federal do Rio Grande do Norte Lagoa Nova, Natal, Brazil
2Grupo de Polímeros ,,Prof. Bernhard Gross''Instituto de Física de Sao Carlos, Universidade de Sao Paulo, Brazil
3Faculdade de Ciencias e Tecnologia de Presidente Prudente
Universidade Estadual Paulista, Brazil
The Study of the Spin Transition Process in Na[Fe(Th-Sa)2] by Electron Paramagnetic Resonance
Yu.V. Yablokov1, V.V. Zelentsov2, M. Augustyniak-Jabłokow1, A. Krupska1, J. Mroziński3
1Institute of Molecular Physics PAS, Poznań, Poland
2Moscow Physical Technical Institute, Russia
3Faculty of Chemistry University of Wrocław, Poland
