bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chemical Vapor Deposition of Titanium Disulfide
Authors: Motojima Seiji , Itoh Kazuaki , Takahashi Yasutaka , Sugiyama Kohzo 
Published: July 2006

Abstract
Chemical vapor deposition of TiS2 was examined. TiS2 was deposited on a quartz substrate above 300 °C from a gas mixture of TiCl4, H2S, and Ar. Maximum deposition rate was attained at 700–800 °C for a 0.7 gas flow ratio H2S/(TiCl4+H2S) irrespective of temperature. Crystal morphology and composition were strongly affected by temperature and gas compositions. Well-formed TiS2 crystals were grown either at 600 °C or from a gas mixture of low flow ratio 0.2 of H2S/(TiCl4+H2S). Single phase of TiS2 was deposited in the temperature range 400–850 °C.
Asymmetric Induction on the Reaction of Prochiral Olefins with Chloro-l-aminocarboxylato-η2-ethyleneplatinum(II)
Authors: Terai Yoshiro , Kido Hiroaki , Kashiwabara Kazuo , Saito Kazuo 
Published: July 2006

Abstract
Addition of a large excess of trans-2-butene (tbn) or 2-methyl-2-butene (mbn) to an acetone solution of cis- or trans(N, ethylene)[PtCl(l-am)(C2H4)] (l-am, 9 kinds of l-aminocarboxylate) gave first increase and then gradual decrease in CD strength in the region \simeq26500 cm−1. The kinetic optical yield amounted to 53% whereas that at the equilibrated state was much less (up to 27% for cis(N, olefin) complexes and 6 to 12% for trans complexes), trans-2-Butene gives larger yields than mbn. Kinetic analysis of the growth and decay curve of the CD strength disclosed that the first fast increase in CD reflects the greater rate of substitution of the prochiral olefins for ethylene in S-configuration than that in R-configuration. The second step seems to involve the exchange of coordinated tbn or mbn catalyzed by ethylene which was made free in the first step. The mechanism of asymmetric induction has been discussed from both steric and electronic viewpoints. Asymmetry of the coordinated nitrogen seems to give a dominating effect.
Syntheses of Heliparvifoline and O-Demethylpteleine
Authors: Sekiba Tetsuya 
Published: July 2006

Abstract
2,3-Dihydroheliparvifoline (Va) was obtained from 4-methoxy-3-benzyloxyaniline by condensation with diethyl (2-benzyloxyethyl)-malonate, and by subsequent methylation, debenzylation, and then cyclodehydration. Benzyl ether of Va was dehydrogenated and then treated with hydrochloric acid to give heliparvifoline.
A New Synthesis of l-4-Amino-2-hydroxybutyric Acid. Carboxyl-Assisted Nitrile Synthesis from Primary Amides
Authors: Yoneta Toshio , Shibahara Seiji , Fukatsu Shunzo , Seki Shigeo 
Published: July 2006

Abstract
l-2-Hydroxysuccinamic acid prepared from l-asparagine was dehydrated with acetic anhydride in pyridine, affording the respective ω-cyano acid, which, on catalytic hydrogenation, gave the title compound. Similarly, the amide groups of some other β- and γ-amic acids were dehydrated to give the respective cyano acids in good yields.
The Crystal and Molecular Structure of Dichlorobis(2-pyridinethiolato)tin(IV)
Authors: Masaki Mitsuo , Matsunami Satoshi , Ueda Hideo 
Published: July 2006

Abstract
The crystal and molecular structures of dichlorobis(2-pyridinethiolato)tin(IV) have been determined by X-ray analysis. The crystal belongs to the triclinic system: a=8.340(8), b=12.456(7), c=7.178(3) Å, α=86.46(4), β=111.06(5), γ=99.18(6)°, space group P\bar1 with Z=2. The structure was determined by the heavy atom method and refined by the block-diagonal least-squares method (R=0.058). The complex is a distorted octahedral complex in which 2-pyridinethiolato ligands act as bidentate ligands, two four-membered (Sn, S, C, and N) chelate rings being present. Two Sn–Cl bonds are cis, two Sn–N bonds are cis, and two Sn–S bonds are trans configuration.
Radiation Chemical Reactions in Carbon Dioxide–Propane System. II. Reoxidation of Carbon Monoxide at Low Propane Concentration
Authors: Ikezoe Yasumasa , Sato Shoichi 
Published: July 2006

Abstract
In the γ-radiolysis of carbon dioxide, the back reaction or reoxidation of carbon monoxide, proceeds at a moderate rate with propane concentration less than 0.5%, reducing the apparent G(CO) value. Concerning the total pressure and dose rate dependence of the G(CO) value with such small propane addition, it was found that the back reaction was accelerated by raising the total pressure and by lowering the dose rate. The following reactions of clustered negative ions are considered to explain the pressure and dose rate effects:
X−+CO→CO2+Y−+Z1,
X−+C3H8→Y−+Z2,
X−+X+→mCO2+Z3,
where X− stands for a clustered negative ion.
The Effect of Surfactants and β-Cyclodextrin on the Photooxidation of Stable Carbanions
Authors: Yamada Kazutoshi , Shigehiro Kiyoshi , Tomizawa Tetsuo , Iida Hirotada 
Published: July 2006

Abstract
The micellar effect on the photochemistry of α-(4-hydroxyimino-2,5-cyclohexa-dienylidene)-α-phenylacetonitrile and its derivatives has been studied. 4-Nitrobenzophenone derivatives were obtained by the irradiation of ethanolic alkaline aqueous solutions of the oximes. 4-Nitrosobenzophenone derivatives formed as an intermediate were thermally oxidized to give the corresponding nitro compounds. The reaction was found to be the photochemical oxidation by singlet oxygen. The addition of an anionic surfactant (sodium dodecyl sulfate) and a nonionic surfactant (Tween #80) to the reaction solution scarcely changed the pKa values of oximes, whereas the addition of a cationic surfactant such as hexadodecyltrimethylammonium bromide (HTAB) caused a considerable decrease. This indicates that HTAB promotes the formation of a stable carbanion. The presence of HTAB enhanced the rate of photooxidation by a factor of 102. The catalytic effect becomes maximum at the pH value of the reaction solution near the pKa measured in the presence of HTAB or β-CDX.
Peptides. VII. Some Sulfonates of Strongly Acidic N-Hydroxy Compounds as Novel Coupling Reagents
Authors: Itoh Masumi , Nojima Hiroshi , Notani Jiyoji , Hagiwara Daijiro , Takai Kuniaki 
Published: July 2006

Abstract
Sulfonates of strongly acidic N-hydroxy compounds such as 6-chloro-1-(p-chlorophenylsulfonyloxy)benzotriazole have been found to be excellent coupling reagents for amide bond formation. Amides can be prepared through either an active ester or a mixed anhydride according to the chosen procedure. Several active esters and protected di- and tripeptides prepared are listed in the Tables. Racemization, possible side reactions, and reaction pathways of the amide bond formation have also been discussed.
The Reaction of Dibenzylselenonium Ylides with Various Acids
Authors: Tamagaki Seizo , Tamura Katsuyuki , Kozuka Seizi 
Published: July 2006

Abstract
Dibenzylselenonium cyano(methoxycarbonyl)methylide and dibenzylselenonium dicyanomethylide react readily with strong acids at room temperature, giving 1,3-diselena compounds and active methylene compounds.
Hydrogenation and Hydrogenolysis. XVI. The Reactions of Two Isomeric Enol Ethers of 3-Methylcyclohexanone over Platinum Group Metals
Authors: Nishimura Shigeo , Kagawa Kunihiro , Sato Nobuo 
Published: July 2006

Abstract
The two isomeric enol ethers of 3-methylcyclohexanone, 1-ethoxy-3-methyl-, and 1-ethoxy-5-methylcyclohexenes (5 and 6), have been hydrogenated in ethanol with six platinum group metals as catalysts. Palladium, rhodium, and platinum efficiently catalyzed the addition of ethanol to the enol ethers to give the corresponding acetal, while iridium and ruthenium catalyzed it only slightly. Osmium was moderately active for the acetal formation. Extensive isomerization between 5 and 6 occurred over all catalysts. In addition, isomerization to an allyl ether, 3-ethoxy-1-methylcyclohexene (9), was observed with 5 over the metals other than palladium. Hydrogenation of 5 and 6 with palladium gave the trans-ether predominantly. With the other metals, the cis-ether was formed in large excess from 5 and the trans-ether in slight excess from 6 at the initial stage of hydrogenation. Hydrogenolysis of the ethoxyl group occurred extensively over platinum but only slightly with palladium and ruthenium. These results are compared with those obtained with the corresponding dimethylcyclohexenes and allyl ether 9.
Preparation and Diels-Alder Reactions of 3-Substituted 3-Sulfolenes
Authors: Inomata Katsuhiko , Kinoshita Hideki , Takemoto Hisayo , Murata Yasue , Kotake Hiroshi 
Published: July 2006

Abstract
It was found that 3-(p-tolylsulfonyl)- and 3-(p-tolylsulfinyl)-3-sulfolenes prepared from 3-sulfolene react with various dienophiles to give the corresponding Diels-Alder cycloadducts in good yields, and that only the “para” substituted cycloadducts are obtained with monofunctionalized (CHO, COCH3, CO2CH3, CN, and C6H5) ethylenes and methyl 2-methylpropenoate, respectively.
Dehydroannulenes. IX. Effects of Substituents on the 1H NMR Spectra of Tetrakisdehydro[18]- and Bisdehydro[14]annulenes
Authors: Akiyama Shuzo , Iyoda Masahiko , Yoshitsugu Kiyoshi , Fukuoka Masatoshi , Nakagawa Masazumi 
Published: July 2006

Abstract
In order to obtain information on the cause of low field shift of 1H NMR signals of ‘acetylene-cumulene’-dehydroannulenes on introduction of substituents, the syntheses of 1,8-bisdehydro[14]- and 6,8,15,17-tetrakisdehydro[18]annulenes bearing p-substituted phenyl group(s) have been performed. The examination of their 1H NMR spectra indicates that the low field shift of NMR signals can be regarded as a superposition of three effects, i.e., 1) decrease of ring current in annulene nucleus by perturbation of substituent group(s), 2) Deshielding effect of ring current in aryl substituent(s) exerted on annulene protons, and 3) Electronic effect of p-substituent in phenyl group(s) transmitted to annulene ring.
Fluorescence of the Proton Transferred Excited Species between 4-Amino-2-methyl-5H-[1]benzopyrano[3,4-c]pyridin-5-one and Acetic Acid. Time-Resolved Fluorescence Spectra and Solvent Effects
Authors: Fujimoto Akira , Hirose Hiroshi 
Published: July 2006

Abstract
The nanosecond time-resolved spectra and apparent lifetime for the fluorescence of the proton transferred excited species (tautomer) between 4-amino-2-methyl-5H-[1]benzopyrano[3,4-c]pyridin-5-one (BPP) and acetic acid have been measured in isooctane (2,2,4-trimethylpentane) at room temperature. It has been established that the rising time of the tautomer fluorescence was ca. 15 ns and the time required for the excited hydrogen-bonded species-tautomer equilibrium was ca. 40 ns. Solvent effects upon the fluorescence characteristics of the tautomer have also been investigated.
Surface Nonstoichiometry and Isoelectric Point of Manganese Oxide
Authors: Morimoto Tetsuo , Nakahata Hidetoshi , Kittaka Shigeharu 
Published: July 2006

Abstract
The isoelectric point and the nonstoichiometric composition of the surface layer were measured for manganese oxide samples treated in vacuo or in air at elevated temperatures. It was found that the surface composition of most samples tested was oxygen-deficient with reference to the bulk composition, and that the IEP was determined by the bulk structure rather than the surface composition. This was ascribed to the fact that the surface is heterogeneous and the dissolution of the solid will take place preferentially at surfaces which involve defect structures or Mn(II) ions.
The Chemistry of Isocyanic Acid and Its Derivatives. Part V. The Oxidative Coupling of Ethyl Carbamate and Urea with Cyclohexene, Tetrahydrofuran, and Cyclooctadiene Effected by Palladium(II) Chloride
Authors: Ozaki Shoichiro , Tamaki Akihiro 
Published: July 2006

Abstract
The reaction of ethyl carbamate with cyclohexene promoted by PdCl2 gave ethyl 1-cyclohexenylcarbamate. The reaction of ethyl carbamate and tetrahydrofuran gave ethyl 2-tetrahydrofurylcarbamate. Ethyl carbamate and 1,5-cyclooctadiene–PdCl2 complex (4) reacted to give ethyl 4-cyclooctenylcarbamate. The reaction of urea and 4 afforded cyclooctylurea and 4-cyclooctenylurea.
Synthesis of Chromenochlalcone Glucosides
Authors: Yamada Shigetoshi , Ono Futara , Katagiri Takao , Tanaka Juntaro 
Published: July 2006

Abstract
Some chromenochalcone glucosides were synthesized in 24–62% yields from 6-acetyl-5,8-dihydroxy-2,2-dimethylchromene and various (β-glucosyloxy)benzaldehydes.
A Synthesis of (±)-epi-Seychellene
Authors: Yamada Kiyoyuki , Kyotani Yoshinori , Manabe Shunichi , Suzuki Masaaki 
Published: July 2006

Abstract
Starting from a mixture of two diastereomeric ketols, (±)-seychellene and (±)-epi-seychellene were synthesized in six steps.
A Shock Tube Study on the Pyrolysis of Acetylene in the Presence of Nitrogen Oxide
Authors: Ogura Hiroo 
Published: July 2006

Abstract
The pyrolysis of acetylene in the presence of nitrogen oxide has been investigated by use of a single-pulse shock tube in the temperature range 1100–1650 K. The hydrocarbons produced in the presence of nitrogen oxide were quite the same as those obtained from the pyrolysis of acetylene by itself. The yield-temperature plots of 1-buten-3-yne showed that at temperatures below 1350 K the formation rate of 1-buten-3-yne is reduced by the addition of nitrogen oxide. The retarding effect of nitrogen oxide on the 1-buten-3-yne formation was interpreted in terms of the reactions of nitrogen oxide with 1-ethynylvinyl and 2-ethynylvinyl radicals to yield pro-pynenitrile and hydrogen cyanide, respectively. An illustrative radical chain mechanism was presented for the pyrolysis of acetylene in line with the experimental results obtained from the pyrolysis inhibited by nitrogen oxide. The radical chain is initiated by the bimolecular reaction of acetylene, viz. 2C2H2→C4H3+H, ethynyl and 2-ethynylvinyl radicals being the chain carriers, where C4H3 is 1-ethynylvinyl radical.
The Chromium(VI) Oxide Oxidation of Epimeric 1,2,3,4-Tetrahydro-1-naphthols
Authors: Hanaya Kaoru , Awano Sachio , Kudo Hideaki 
Published: July 2006

Abstract
The rates of the chromium(VI) oxide oxidation of 2- and 3-substituted 1-tetralols(1,2,3,4-tetrahydro-1-naphthols) have been determined. In the 3-substituted compounds, the rates of cis-isomers(eq’-OH) are markedly larger than those of trans-isomers(ax’-OH). On the other hand, in the case of 2-substituted compounds, the rates of the cis-isomers(ax’-OH) and trans-homers (eq’-OH) are almost equal.
The Reaction of Hydrogen Chloride with Nitrogen Oxide in Shock Waves
Authors: Higashihara Tetsuo , Saito Ko , Murakami Ichiro 
Published: July 2006

Abstract
The reaction of hydrogen chloride with nitrogen oxide in the temperature range 2670–3850 K and in the pressure range 2.5–3.5 atm has been studied behind reflected shock waves by monitoring the IR emission of HCl. When nitrogen oxide was added to the HCl–Ar system, the rate of HCl dissociation was found to be accelerated. For the early stage of reaction, the rate equation obtained was –d[HCl]/dt=1011.7exp (−33 kcal/RT)[HCl]1.3[NO]0.5 mol cm−3 s−1. As the initiation step, Reaction 1 was found to be more important than Reaction 2 under these experimental conditions:
HCl+NO→HNO+Cl, (1)
HCl+Ar→H+Cl+Ar. (2)
The rate constant of Reaction 1 was determined to be k1=1013.2exp (−50.2 kcal/RT) cm3 mol−1 s−1.
The Reaction of Hydrogen Bromide with Nitrogen Oxide in Shock Waves
Authors: Higashihara Tetsuo , Saito Ko , Murakami Ichiro 
Published: July 2006

Abstract
The reaction of hydrogen bromide with nitrogen oxide in the temperature range 2000–3300 K and in the pressure range 0.7–3.8 atm has been studied behind reflected shock waves by monitoring the IR emission of HBr. For the early stage of the reaction, the rate equation obtained was −d[HBr]/dt=koverall[HBr]1±0.3[NO]0.7±0.2[Ar]0±0.1, where koverall=1010.4±0.2exp{−(23.2±3.0) kcal/RT} cm2.1 mol−0.7 s−1. As the initiation step, Reaction 1 was found to be more important than Reaction 2:
HBr+NO→HNO+Br, (1)
HBr+Ar→H+Br+Ar. (2)
The rate constant of Reaction 1 was determined to be k1=1012.8exp(−30kca⁄RT) cm3 mol−1 s−1.
Oxidation of Propylene Adsorbed on Metal Oxides. Oxygen Species in Catalytic Oxidation
Authors: Kubokawa Yutaka , Ono Takehiko 
Published: July 2006

Abstract
Adsorption of ethylene and propylene has been investigated volumetrically with various oxide catalysts. From the results together with those of oxidation of propylene adsorbed on oxides, it is concluded that the difference between the characteristics of oxidation of propylene adsorbed on the oxide catalysts for complete or selective oxidation is attributable to the difference in the oxygen species responsible for oxidation rather than that in the adsorbed state of propylene. A comparison of characteristics of the oxidation of adsorbed propylene in the presence of gaseous oxygen and in a vacuum suggests that on the catalysts for complete oxidation, adsorbed oxygen plays a significant role in the oxidation because of its higher activity as compared to that of lattice oxygen.
An Analysis of the Through-bond Interaction Using the Localized Molecular Orbitals. I. Interactions between Lone-pair Orbitals in Azines: Pyridazine, Pyrimidine, and Pyrazine
Authors: Ohsaku Masaru , Imamura Akira , Hirao Kimihiko 
Published: July 2006

Abstract
The CNDO/2 and INDO calculations were performed on three azines: pyridazine, pyrimidine, and pyrazine. In order to check the validity of the lone-pair orbital energies, the calculated orbital energies were compared with those obtained by ab initio calculations. These molecules have two lone-pairs, which can be transformed into symmetric and antisymmetric combinations. In pyridazine and pyrimidine, the symmetric one is lower than the antisymmetric one in energy, while in pyrazine the reverse is true. These results were subjected to an analysis from the standpoint of the through-bond interaction. That is, we transformed the canonical molecular orbitals obtained by the CNDO/2 method into localized molecular orbitals. By the use of the localized molecular orbitals thus obtained, the variation in the lone-pair orbital energies of these molecules was estimated in terms of the through-bond (and/or the through space) interaction according to a method which selectively considered the particular interaction between the specified localized molecular orbitals in a molecule. As a result of this analysis, it was found that the relative order of the lone-pair orbital energies was determined by the different types of interactions from molecule to molecule, and the energy variation in the lone-pair orbitals was elucidated in terms of the specified through-bond and through-space interactions.
Electronic Absorption and Fluorescence Spectra of [2.2]Anthracenophanes
Authors: Morita Masaharu , Kishi Tohru , Tanaka Masashi , Tanaka Jiro , Ferguson James , Sakata Yoshiteru , Misumi Soichi , Hayashi Toyoharu , Mataga Noboru 
Published: July 2006

Abstract
The absorption and the fluorescence spectra of four [2.2]anthracenophanes were investigated at low temperatures. A theoretical calculation of the energy levels was performed by including the charge resonance and the exciton type interactions. The fluorescence excitation polarization spectra were recorded for all absorption bands at low temperatures, the directions of the transition moment of the excimer type emission bands being estimated by the p-values and the established transition directions of anthracene chromophores. The assignments of the absorption bands are presented based on these results.
Electrical Properties of Langmuir Films of Fatty Acid Salts and Carotenoic Acid
Authors: Yamamoto Naoto , Ohnishi Toshihiro , Hatakeyama Masahiro , Tsubomura Hiroshi 
Published: July 2006

Abstract
Electric conductivities have been studied for Langmuir molecular layers of barium salt of fatty acids and for the layers of barium arachidate mixed with all-trans-β-apo-8′-carotenoic acid. These results have been interpreted based on an electron tunneling model taking account of the mirror image force. The conduction levels of the layers have thereby been estimated to be 1.00 eV for barium stearate, 1.31 eV for barium arachidate and 1.45 eV for barium behenate below vacuum level. The conduction level of the carotenoic acid has been derived to be 1.9 eV from these results. The structure of these layers has been discussed from the above mentioned experimental results, together with those on surface pressure, absorption spectrum and electric capacitance.
The Effect of High Density Excitation on the Phosphorescence Spectra and Decay Times of Several Crystalline Uranyl(VI) Salts
Authors: Kobayashi Takayoshi 
Published: July 2006

Abstract
The effect of high density excitation on the phosphorescence spectra and their decay curves of crystalline uranyl(VI)nitrate hexahydrate, uranyl(VI)acetate dihydrate, and zinc uranyl(VI)acetate heptahydrate was studied using a nitrogen laser as the exciting light source. The relative emission intensity of the spectra in the shorter wavelengths decreased and the vibrational structure became broader at higher density excitations; these changes were attributed to the saturation in excitation and to the temperature increase in the irradiated volume of the sample crystal caused by the heat released in the radiationless decay process. A decrease in the decay time was also observed at high density excitations; this shortening was attributed to bimolecular quenching of triplet excitons in the crystal. The rate constant for this process in crystalline uranyl nitrate hexahydrate was measured at several temperatures between 77 and 295K; it was 2.6×10−13 cm3 s−1 at 295K for example. From this rate constant the hopping rate for a triplet exciton in crystalline uranyl nitrate hexahydrate was obtained: 4.3×108 cm3 s−1 at 295K. The activation energy for the exciton migration was found to be 320 cm−1.
Kinetic Studies on the Stability Enhancement of Mixed Ligand Copper(II) Complexs with 2,2′-Bipyridyl and Acetylacetonate
Authors: Munakata Megumu , Yamada Katsumi 
Published: July 2006

Abstract
The rate constants for the formation and dissociation of the binary Cu2+-acetylacetonate(acac−) complex and the ternary 2,2′-bipyridyl(bpy)-Cu2+-acac− complex have been determined by the temperature-jump method. For the reactions Cu2++acac−\oversetk1b\undersetk-1b\ightleftharpoonsCu(acac)+, Cu(acac)++acac−\oversetk2b\undersetk-2b\ightleftharpoonsCu(acac)2, and Cu(bpy)2++acac−\oversetk1t\undersetk-1t\ightleftharpoonsCu-(bpy)(acac)+, the rate constants are k1b=9.0×108 M−1 s−1, k-1b=3.2 s−1, k2b=7.0×107 M−1 s−1, k-2b=13 s−1, k1t=1.1×109 M−1 s−1 and k-1t=1.9 s−1. A comparison of the reactions shows that the forward rate for the Cu(bpy)-(acac)+ formation is larger than that for Cu(acac)+ and, subsequently, the rate of the complex formation between Cu(bpy)2+ and acac− is enhanced by the coordinating bpy. On the other hand, the reverse rate for the ternary complexation reaction is smaller than for the binary. This illustrates that the dissociation of acac− of Cu(bpy)-(acac)+ becomes more difficult owing to the coordination of the bpy. The above two effects of the bpy may be driving forces producing high stability, i.e., a positive value of ΔlogK\left(K=\frac[Cu(bpy)[L][Cu(bpy)][L]\ight) for the ternary copper(II) complexes with bpy and other ligands containing O as donor atoms.
Reaction Process between Iron(II) Chloride and Oxygen
Authors: Saeki Yuzo , Matsuzaki Ryoko , Fujiwara Seiki 
Published: July 2006

Abstract
The product formed by heating FeCl2 in an oxygen stream has been examined in detail. The reaction processes of gaseous FeCl3 and FeOCl, formed during the reaction between FeCl2 and oxygen, with oxygen were also examined. The reaction process between FeCl2 and oxygen can be represented as follows: FeCl2 reacts with oxygen above about 250 °C to form FeOCl and gaseous FeCl3, 2FeCl2(s)+1/2O2(g)→FeOCl(s)+1/2Fe2Cl6(g). Subsequently, the resulting FeOCl reacts with oxygen to form α-Fe2O3 and chlorine, 2FeOCl(s)+1/2O2(g)→Fe2O3(s)+Cl2(g). Above about 320 °C, the decomposition of the FeOCl to α-Fe2O3 and gaseous FeCl3, 3FeOCl(s)→Fe2O3(s)+1/2Fe2Cl6(g), also occurs. Above about 370 °C, the reaction between gaseous FeCl3 formed and oxygen to form η-Fe2O3 and chlorine, Fe2Cl6(g)+3/2O2(g)→Fe2O3(s)+3Cl2(g), occurs in addition to the above reactions.