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Fluoreliminierung aus Graphitfluorid mit Magnesium Defluorination of Graphite Fluoride Applying Magnesium Emst-Christian Koch COMET GmbH Pyrotechnik Apparatebau, Ruhweg 21, D-67307 Göllheim Sonderdruckanforderungen an Dr. E.-Ch. Koch. Fax: +49(0)631-3710537 Z. Naturforsch. 56 b, 512-516 (2001); eingegangen am 5. März 2001 Graphite Fluoride, Defluorination, Magnesium Consolidated stoichiometric mixtures of graphite fluoride (1) and magnesium (2) upon igni­ tion under argon atmosphere (0,1 MPa) yield very high flame temperature of ~ 5600 K as determined by

Ternary Intercalation Compound of Graphite with Aluminum Fluoride and Fluorine Tsuyoshi Nakajima, Masayuki Kawaguchi, and Nobuatsu Watanabe* Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606, Japan Dedicated to Prof. Dr. Drs. h. c. Oskar Glemser on the occasion of his 70th birthday Z. Naturforsch. 36b, 1419-1423 (1981); received May 7, 1981 Graphite Intercalation Compound, Graphite Fluoride A ternary intercalation compound of graphite with AIF3 and F2, CXF(A1F3)J/ was prepared under fluorine atmosphere at

h isomers 95 7.3. The structure of chemical bonding in C60F24 100 8. Graphite fluorides 102 8.1. Poly(carbon monofluoride) 104 8.2. Poly(dicarbon monofluoride) 108 9. Conclusion I l l 10. References 112 SUMMARY The electronic structure of C6F6, C60F24, and graphite fluorides (CF)n, (C2F)n was investigated using X-ray fluorescence and quantum-chemical methods. The possibilities of this joint approach for electronic study of a 79 Vol. 19, No. 1-2 Nature of Chemical Bonding in the Fluorinaled Carbon Compounds compound are demonstrated with benzene and

M ünchen, Meiserstraße 1. D-8000 München 2, FRG Herrn Prof. Dr. E. Stumpp zum 60. Geburtstag gewidm et Z. Naturforsch. 44b, 755 — 760 (1989); received March 7, 1989 Chlorine Trifluoride, Graphite Compounds. Graphite Fluoride. Graphite Intercalation Compounds Graphite intercalation compounds of the acceptor type are formed with C1F, only at low temperatures near 0 °C. Different compounds are obtained in the absence or in the presence of HF. Thermal decomposition near room temperature or preparation at 20—50 °C lead to green or yellow-green graphite compounds of

1 Introduction Fluorinated carbon (CF x ) is a promising member of the carbon derivative family since graphite fluoride was synthesized by Ruff et al . in 1934 firstly [ 1 ]. Due to its extraordinary properties, such as good chemical stability, tunable bandgap, good thermal conductivity and stability, and super-hydrophobicity [ 2 , 3 , 4 , 5 , 6 ], fluorinated carbon materials attracts more and more attention. So, fluorinated carbon is a potential material in wide application fields such as self-cleaning, lubricants, super-hydrophobic coating and energy

sheets. Necessarily, the carbon layers lose their planarity in the case of covalent bonding and con- vert to a puckered-layer structure. Covalent bonds are formed by reactions of graphite with ele- ments or groups of high electronegativity, e.g. fluorine (which yields graphite fluorides), oxygen or hydroxyl groups (which give graphite oxide, also called graphitic acid), etc. The disruption of the n-electron system generally leads to a drastic decrease of electrical conductivity. In the case of charge transfer interaction, the carbon sheets retain their planar

systems came up after the commercial success of the lithium/graphite fluoride primary battery sys- tem in the 1970s [24] and by the ongoing effort to develop a practical secondary battery system without a lithium metal anode, which finally led to the introduction of lithium-ion batteries [25,26]. Graphite as the positive electrode in electrochemical energy storage devices have been introduced by the patents of McCullough [27– 30] and the work of Carlin et al. [31,32] as the so-called “dual-carbon cell”, where they used graphite as both the negative and positive

functionalization [ 43 ]. Fluorographene is expected to be electrically insulating. There are three main methods to produce it: (i) by exposition to XeF 2 [ 44 ], (ii) by etching using fluorinated compound [ 45 ] and (iii) by liquid phase exfoliation of bulk graphite fluoride [ 20 , 46 ]. Oxygenated graphene obtained through the common Hummers’ method [ 47 , 48 ] is highly inhomogeneous (Section 2 ). In the radical addition of atomic oxygen, oxygen atoms are expected to add on graphene forming epoxides. The formation of epoxide groups has been obtained by exposing graphene at


-hydroxo Anions of Germanium: Prepara- tion, Structure and Properties of Na2GeS2(OH)2 • 5 H 2 0 1400 Graphite Electrodes Electrochemical Behavior of the Nitrophenols and Their Reduction Products at Graphite Electrodes 840 Graphite Fluoride Ternary Intercalation Compound of Graphite with Aluminium Fluoride and Fluorine . . . 1419 Graphite Intercalation Compound Ternary Intercalation Compound of Graphite with Aluminum Fluoride and Fluorine . . . 1419 Group I I Aryls Coordination Chemistry of Reduced N-Hetero- cycles. Complexes of Pyrazine Anion Radical with Phenyl


Materials in Neutral and Basic Aqueous Solutions ............................................................ 729 Subject Index 1623 Graphite Compounds Graphite Compounds with Chlorine Trifluo­ ride ......................................................................... 755 Graphite Fluoride Graphite Compounds with Chlorine Trifluo­ ride ......................................................................... 755 Graphite Intercalation Compounds Synthesis and Structure of the Graphite Inter­ calation Compounds of Mercuric Chloride 721 Graphite Compounds with