bluuebunny/crossref_metadata_2025_split huggingface dataset:
Syntheses and Properties of Oxomolybdenum(VI), -(V), and -(IV) Complexes with Ferrocenecarbodithioate
Authors: Nakamoto Masami , Tanaka Koji , Tanaka Toshio 
Published: July 2006

Abstract
A series of ferrocenecarbodithioato–oxomolybdenum(VI), -(V), and -(IV) complexes, MoVIO2(S2CC5H4FeIIC5H5)2 (1), MoV2O3(S2CC5H4FeIIC5H5)4 (2), and MoIVO(S2CC5H4FeIIC5H5)2 (3) have been prepared. Complex 2 under-goes a disproportionation reaction in solution and exists as an equilibrium mixture with 1 and 3. Cyclic voltammograms of 1 and 3 display two and three sets of quasi-reversible couples, respectively, arising from stepwise redox reactions of the molybdenum and iron sites. Electronic spectra revealed that the oxidized species [MoVIO2(S2CC5H4FeIIIC5H5)2]2+, [MoVO(S2CC5H4FeIIC5H5)2]+, and [MoVO(S2CC5H4FeIIIC5H5)2]3+ generated electrochemically are considerably stable owing to the electron-donating ability of the ferrocenecarbodithioate ligand.
The Promotion Effect of Surface Hydroxyl on the Oxygen Adsorption over NiO, Fe2O3, and CuO
Authors: Takita Yusaku , Saito Yumie , Tashiro Tetsuro , Hori Fumiaki 
Published: July 2006

Abstract
Oxygen TPD revealed that the adsorption of water vapor at 278 K promoted the desorption of the preadsorbed oxygen at 793→278 K over NiO and Fe2O3. Preadsorption of water vapor at 473 K brought about a marked enhancement over Fe2O3 and a slight increase over CuO in the adsorption of oxygen at 473→278 K.
UV and Visible Fluorescences of CF3 Radicals Produced by the Two-photon Decomposition of CF3Br and Their Radiative Lifetimes
Authors: Washida Nobuaki , Horie Osamu , Becker Karl H 
Published: July 2006

Abstract
The UV and visible emission bands of the CF3 radical were observed in the two-photon decomposition of CF3Br using KrF excimer laser (248 nm) radiation. Very short radiative lifetimes (shorter than 40 and 50 ns for the UV and visible bands, respectively) were obtained.
Decomposition of Solid Potassium Nitrate by Incident 100 keV Ions
Authors: Furukawa Katsutoshi , Ohno Shin-ichi 
Published: July 2006

Abstract
Potassium nitrate was bombarded at 100 keV energy with ion beams extracted from a discharge of D2, He, N2, and O2, and the yield for the formation of nitrite ion was determined: G(NO2−)=1.8, 1.8, 0.5, and 0.5, respectively. The results suggest that the reaction takes place via electronic excitations.
A Fairly Effective Environment Substance [Co(sep)]3+ Ion in the Pfeiffer Effect of Some Oxalato Complexes of Chromium(III)
Authors: Miyoshi Katsuhiko , Sakamoto Yukio , Toda Yoshihisa , Yoneda Hayami 
Published: July 2006

Abstract
A chiral complex ion [Co(sep)]3+ (sep=1,3,6,8,10,13,16,19-octaazabicyclo[6.6.6]eicosane) was found to displace the chiral equilibrium between Δ and Λ enantiomers greatly for moderately optically labile metal complexes [Cr(ox)2(acac)]2− and [Cr(ox)2(gly)]2− in dioxane–water mixtures.
Rate Coefficient for H+C2H2\ightleftarrowsC2H+H2
Authors: Gardiner William , Tanzawa Tsuneo , Koike Tohru , Morinaga Kihei 
Published: July 2006

Abstract
The rate coefficient expressions k=1013.78 exp(−99 kJ/RT) cm3 mol−1s−1 for H+C2H2→C2H+H2 and k=1013.05 exp(−12 kJ/RT) cm3 mol−1s−1 for C2H+H2→H+C2H2 were proposed after correcting for errors in previously reported data analyses of shock tube data on C2H2 pyrolysis.
Determination of the Stability Constants of Crown Ether Complexes with Protonated Amines by Solvent Extraction
Authors: Noguchi Hideyuki , Nagamatsu Masatoshi , Yoshio Masaki 
Published: July 2006

Abstract
Stability constants of crown ether complexes with protonated primary amines were determined by the solvent extraction method. Stability constants between protonated amines(AH+) and 18-crown-6(L), logKAHL, were found to be 0.4, 0.15, 0.1, −0.05, and −0.1 for protonated methylamine, ethylamine, propylamine, butylamine, and iso-propylamine at 25.0°C, respectively.
Reactions of Aromatic Azido, Azo, Azoxy, and Hydrazo Compounds with Diphosphorus Tetraiodide
Authors: Suzuki Hitomi , Tani Hiroyuki , Ishida Shigeko 
Published: July 2006

Abstract
On treatment with diphosphorus tetraiodide in boiling benzene followed by aqueous work-up, the title nitrogen-containing compounds undergo a reductive cleavage of the nitrogen–nitrogen bond, giving the corresponding amines in low to good yields.
Regioselective Monoalkylation of Ketones with Allylic Nitro Compounds
Authors: Ono Noboru , Hamamoto Isami , Kaji Aritsune 
Published: July 2006

Abstract
Lithium enolates from 2-methylcyclohexanone and p-methylacetophenone react with allylic nitro compounds in the presence of triethylborane (2 equiv) and Pd(PPh3)4 (5 mol%) to give monoallylated compounds regioselectively.
The Nature of the Cosolvent Effects of Sugars on the Aqueous Solubilities of Hydrocarbons
Authors: Janado Masanobu , Yano Yuki 
Published: July 2006

Abstract
Pentoses (d-arabinose, d-xylose, and d-ribose) and hexoses (d-glucose, d-galactose, and d-mannose) increased appreciably the aqueous solubilities of naphthalene and biphenyl, but all the sugars except ribose caused solubility depression of 1-octanol. Ribose increased most effectively the hydrocarbon solubilities while glucose showed the least effect. Deoxy sugars and methyl glycosides were more effective than the corresponding unsubstituted sugars. As to maltodextrins the solubility-increasing effect per glucose unit is cooperatively enhanced as the number of glucose residue increases. On the basis of these data, it was concluded that the cosolvent effects of the sugars are primarily brought about by their nonpolar interactions with hydrocarbons that occur at the structure-breaking sites of the sugar molecules.
Reactions of Trimethylsilyl Cyanide with Tropone, 2-Phenyltropone, and 2-Methoxytropone. Formations of 2-Cyano-1-hydroxytropylidene Derivatives
Authors: Saito Katsuhiro , Kojima Hisashi 
Published: July 2006

Abstract
Reaction of trimethylsilyl cyanide (TMSCN) with tropone and 2-phenyltropone in the presence of a catalytic amount of zinc iodide in dichloromethane afforded silyl ethers of 7-cyano-1,3,5-cycloheptatriene-1-ol (2a) and 2-phenyl-7-cyano-1,3,5-cycloheptatriene-1-ol (2b), respectively. On the other hand, reaction of TMSCN with 2-methoxytropone gave 2-cyanotropone. Upon hydrolysis, 2a, and 2b yielded 2-cyano-1,3,5-cycloheptatrien-1-ol (3a) and a tautomeric mixture of 2-cyano-7-phenyl-1,3,5-cycloheptatrien-1-ol (3b) and 2-cyano-7-phenyl-3,5-cycloheptadien-1-one (4b). Oxidation of 3a and the tautomeric mixture of 3b and 4b with selenium dioxide in dioxane afforded 2-cyanotropone and 2-cyano-7-phenyltropone, respectively.
Alkylation of Ketoxime with Dichloromethane Using Bases under Phase-transfer Conditions. Formation of Methylene Dioxime and Novel Heteromacrocyclic Compounds
Authors: Hosokawa Takahiro , Ohta Toshiyuki , Okamoto Yoshihiro , Murahashi Shun-Ichi 
Published: July 2006

Abstract
Ketoximes, when treated with KO2 (1 equiv) in the presence of di-μ-chlorobis(2-methylallyl)dipalladium(II) (0.1 equiv per Pd) in dichloromethane, give methylene dioximes in moderate yields. This alkylation of ketoximes with CH2Cl2 is also promoted by the use of potassium carbonate in the presence of phase-transfer catalysts such as 18-crown-6. Study on the reactivity of a series of ketoximes in these reactions shows that proton abstraction by base is a crucial step in the latter reaction. By contrast, in the former system the reactivity is supposed to be controlled by nucleophilicity of the oximate anion coordinated to palladium(II). Application of the present reaction to (E,E)-1,2-diketone dioxime such as dimethylglyoxime leads to the formation of novel 21-membered ring heteromacrocyclic compounds in which oxime units are sequentially linked by methylene bridge.
Kinetics and Mechanistic Study of the Methanol Homologation with Cobalt–Ruthenium Mixed Catalyst
Authors: Watanabe Kazuhiro , Kudo Kiyoshi , Sugita Nobuyuki 
Published: July 2006

Abstract
The role of each catalyst was examined in detail in the methanol homologation with cobalt–ruthenium mixed catalyst. Cobalt catalyst showed much higher activity for the hydrocarbonylation of methanol than ruthenium. On the other hand, the hydrogenation of acetaldehyde proceeded much more rapidly by ruthenium catalyst. The rate of methanol homologation in 1,4-dioxane with cobalt–ruthenium mixed catalyst system was found to be of the first order with respect to the partial pressure of CO. The in situ IR spectra indicated that [Co(CO)4]− was an active species for the hydrocarbonylation of methanol and that [Rulx(CO)y] existed under the reaction conditions. On the basis of both the kinetic studies and in situ IR spectral observations, the reaction mechanism of methanol homologation was fully discussed.
Reduction Mechanism of 2,3,5-Triphenyltetrazolium Chloride and 1,3,5-Triphenylformazan
Authors: Umemoto Kisaburo 
Published: July 2006

Abstract
The reduction mechanism of 2,3,5-triphenyltetrazolium chloride(TTC) and 1,3,5-triphenylformazan was studied by electrochemical, ESR, and spectrophotometric methods. In non-aqueous aprotic solvent, 2,3,5-triphrnyltetrazolium ion was reduced to formazan anion either by two-electron reaction or by disproportionation reaction of tetrazolinyl radical generated by one-electron reduction of TTC. The same formazan anion was generated by one-electron reduction of 1,3,5-triphenylformazan. In the presence of proton donor, the formazan anion was converted to formazan by protonation reaction and cyclic regeneration of formazan was observed in the reduction of formazan. These results indicate that the quantitative determination of reducing materials by using TTC may possibly lead to erroneous evaluation of reductants unless the strength of electron donating property of reductants is established.
A Competition between 1,3-Dipolar Cycloaddition and Substitution of Trifluoroacetonitrile Oxide
Authors: Tanaka Kiyoshi , Masuda Hideyuki , Mitsuhashi Keiryo 
Published: July 2006

Abstract
Trifluoroacetonitrile oxide reacted with conjugated olefins such as styrenes, indenes, and acyclic conjugated dienes to give not only the cycloadduct but also its linear isomeric oxime. Methyl or phenyl group attached to the unsaturated carbon of the dipolarophiles was found to favor the formation of oxime. Such a concomitant reaction was interpreted in terms of a competition between a concerted cycloaddition and a two-step substitution through an electrophilic attack of nitrile oxide. Similar competitions were also investigated with cyclic conjugated dienes, where the competitive ratio of the products was found to depend on the ring size.
A Rationalization of Orientation in Nucleophilic Aromatic Photosubstitution
Authors: Mutai Kiyoshi , Nakagaki Ryoichi , Tukada Hideyuki 
Published: July 2006

Abstract
Consideration of the relationship between the mechanisms and orientation effects of the nitro group in nucleophilic photosubstitutions of nitroaromatics leads to the proposal of two rules, making use of frontier molecular orbital theory, for interpreting the regioselectivities and determining the reaction mechanisms. The first rule is a summary of previously proposed interpretations, concerning photoreactions accompanying the direct addition of a nucleophile to an excited nitroaromatic substrate. In this case, the regioselectivity is governed by the HOMO of the substrate. The second rule regards reactions involving photo-induced electron transfer, where regioselectivity is LUMO-controlled. The application of these rules is successfully demonstrated for various types of compounds.
Nuclephilic Photoreaction of Chlorobenzene in Methanol as Studied by Emission Spectroscopy
Authors: Nagaoka Shin-ichi , Takemura Takeshi , Baba Hiroaki 
Published: July 2006

Abstract
The photoreaction of chlorobenzene in methanol has been studied by means of emission spectroscopy. Upon irradiation with UV light, chlorobenzene reacts with methanol to form anisole with a quantum yield of 0.049 at 18 °C. Contrary to the case of chlorobenzene, the photoreaction of p-dichlorobenzene with methanol is not observed. By combining these results with those of our recent studies on the dual phosphorescence from low-lying triplet states of halogenated benzenes, it is suggested that the photoreaction of chlorobenzene with methanol, which is a nucleophilic substitution reaction, occurs in the 3(π,σ*) state. From the temperature dependence of the quantum yield, the activation energy for the nucleophilic photoreaction is estimated to be larger by about 3–4 kcal mol−1 than the apparent activation energy for a combination of the nonradiative 3(π,σ*)→S0 process and the homolytic dissociative process concerning the C–Cl bond in the 3(π,σ*) state. It is suggested that the nucleophilic photoreaction contrasts with the radical reaction leading to the dissociation of the C–Cl bond; the latter reaction occurs in the 3(π,π*) state as well as in the 3(π,σ*) state.
Complex Formation in Cationic Dye–Organic Anion Systems in Aqueous Solution
Authors: Hamai Sanyo 
Published: July 2006

Abstract
The interaction between a cationic dye, Methylene Blue (MB), and organic anions (1-naphthalenesulfonate, 2-naphthalenesulfonate, 1-naphthaleneacetate, 2-anthracenesulfonate, 2,7-naphthalenedisulfonate, and 1,3,6-naphthalenetrisulfonate) in aqueous solution has been investigated by means of absorption and fluorescence spectra. The red shifts of the absorption and fluorescence spectra of MB caused by the addition of the organic monoanion are attributed to the 1:1 complex formation between MB and the organic anion. The thermodynamic quantities as well as the equilibrium constants for the complex formation have been determined. From the finding that the absorption spectrum of MB is not affected by the addition of ethanesulfonate, it is concluded that the complex formation is due to the interaction between the MB cation and the aromatic ring in the organic anion. The addition of polyanion (e.g., 2,7-naphthalenedisulfonate) in the low-concentration range accelerates the dimerization of MB; whereas, in the high-concentration range, the formation of the 1:1 complex rather than the MB dimer is dominant. Studies on the complex formation with monoanions have also been made for Rhodamine 6G, Pyronine G, Safranin T, and Crystal Violet, and similar results to that for MB have been obtained.
Proton-induced Quenching of Methoxynaphthalenes Studied by Laser Flash Photolysis and Inclusion Effect of β-Cyclodextrin on the Quenching
Authors: Shizuka Haruo , Fukushima Masaru , Fuju Takuya , Kobayashi Takayoshi , Ohtani Hiroyuki , Hoshino Mikio 
Published: July 2006

Abstract
Proton-induced quenching in both excited singlet and triplet states of methoxynaphthalenes in H2O–CH3CN mixtures has been studied by means of laser flash photolysis. Inclusion effect of β-cyclodextrin (βCD) on the proton-induced quenching has been also examined. It is shown that the proton-induced quencing (the rate constant 1kq) of 1-methoxynaphthalene (1RH) occurs effectively in the excited singlet state, but not in the triplet state on the basis of the Tn←T1 absorption measurements. There is no enhancement of triplet formation via the proton-induced quenching since the 1kq value obtained by the Tn←T1 absorption measurements agrees with that obtained by fluorimetry. It was unsuccessful to observe a protonated σ-complex produced by the excited-state protonation to the naphthalene ring. The 1:1 inclusion complex between 1RH and βCD is produced with the association constant Kg (=27 mol−1 dm3 at 300K). In the presence of βCD, the 1Lb character of 1RH increases in the fluorescent state and the proton-induced quenching of 1RH markedly decreases, which may be due to inclusion and environmental effects of βCD upon the behavior in the excited state of 1RH. As for 2RH having little or no intramolecular CT character (1La), there is no proton-induced quenching.
Active and Selective Transport of Alkali Metal Ions through a Polyelectrolyte Complex Membrane Consisting of Glycol Chitosan and the Sulfate of Poly(vinyl alcohol)
Authors: Kikuchi Yasuo , Kubota Naoji 
Published: July 2006

Abstract
Polyelectrolyte complex (PEC) membranes consisting of glycol chitosan and the sulfate of poly(vinyl alcohol) have been prepared. The membrane of the polyelectrolyte complex under a 50% humidity prepared in a 4% hydrochloric acid solution was stable in basic and acidic solutions. The membranes of the PECs under a 90% humidity prepared at pH 1.0 were not stable in an alkaline solution. The active and selective transport of K+ and Na+ were observed in the PEC membrane prepared in a 4% hydrochloric acid solution. The transport behavior of alkali metal ions through this membrane was much affected by the hydrogen-ion concentration, which acted as a driving force. A proton-pump mechanism was suggested for the acive transport of Na+ and K+. It was also suggested that the affinity of the carrier and changes in both the chemical and physical properties of the PEC membrane with the hydrogen-ion concentration controlled the selective transport through the membrane.
Synthesis and Structure of (Nitroacetato)((7RS,14RS)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane)nickel(II), [Ni(na)(Me6[14]aneN4)]
Authors: Ito Haruko , Ito Tasuku 
Published: July 2006

Abstract
The title compound, [Ni(na)(Ma6[14]aneN4)], has been synthesized by the reaction of α-[Ni(Me6[14]aneN4)](ClO4)2 with potassium nitroacetate (K2na) in water. X-Ray analysis shows that the complex is a cis-NiO2N4 type with the tetraazamacrocycle folded, and that a dianionic nitroacetate (na2−) chelates the nickel(II) with one oxygen atom of the CO2− moiety and one oxygen atom of the NO2− moiety to form a six membered chelate ring.
The Determination of a Small Amount of Biological Constituent by the Use of Chemiluminescence. V. An Iron-dyestuff Complex as a Catalyst
Authors: Hara Tadashi , Toriyama Motohiro , Kitamura Kouichi , Imaki Masakatsu 
Published: July 2006

Abstract
The catalytic activity of the iron(III) α,β,γ,δ-tetraphenylporphinetrisulfonic acid complex for the chemiluminescence reaction between luminol and H2O2 has been found to decrease in the presence of protein. On the basis of this phenomenon, 2×10−5–2×10−3 g dm−3 bovine serum albumin was determined with the detection limit of 4 ng, lower than that in the previous paper.
Heteropoly Acids Supported on Acidic Ion-exchange Resin as Highly Active Solid-acid Catalysts
Authors: Baba Toshihide , Ono Yoshio , Ishimoto Tadao , Moritaka Shun-ichi , Tanooka Seiichi 
Published: July 2006

Abstract
Heteropoly acids supported on a macroreticular acidic ion-exchange resin shows much higher activity than those supported on activated carbon for the synthesis of methyl t-butyl ether and the esterification of acetic acid with 1-pentanol. This high activity can plausibly be attributed to the interaction of heteropoly anions with substrates which are protonated by the protons of the acidic resin.
Kinetic Studies on the Oxidation of Electrogenerated Mo(V) and Stable Monomeric Mo(V) in Sulfuric Acid Solutions
Authors: Yokoi Kunihiko , Watanabe Iwao , Ikeda Shigero 
Published: July 2006

Abstract
The kinetics of polarographic catalytic reduction of nitrate and perchlorate by electrogenerated transient species of Mo(V) are investigated in 0.1M sulfuric acid solution. Second-order rate constants for the catalytic reaction with nitrate and perchlorate obtained after Koutecky’s treatment are (2.1±0.4)×103 and (1.9±0.1)×102M−1 s−1, respectively. Stable Mo(V) species in sulfuric acid solution is studied by spectrophotometry. It is concluded that there exists dimer-dimer-monomer equilibria. The oxidation of the monomer with perchlorate in 14M H2SO4 obeys the second-order rate law –d[monomer]/dt=k[monomer][ClO4−], where k=(1.59±0.13)×10−1 M−1 s−1. The results indicate that electrogenerated Mo(V) in 0.1M H2SO4 is not the same species as the stable monomeric Mo(V) in 14M H2SO4.
Rate of Complex Formation of Iron(III) with Several β-Diketones in Aqueous Perchlorate Solutions Determined by Solvent Extraction Method
Authors: Inaba Kazuho , Itoh Nobuyuki , Matsuno Yumi , Sekine Tatsuya 
Published: July 2006

Abstract
The rate of formation of iron(III) complexes with several β-diketones (HA) in aqueous sodium perchlorate solutions has been determined by a solvent-extraction method. The rate was found to be first order with respect to the reagent, and zero to an inverse second order with respect to the hydrogen-ion. From the results, the controlling step has been determined to be the formation of the first complex in aqueous solutions. Three types of unit reactions are suggested for this; (i) Fe3++HAenol, which has an associative character; (ii) Fe(OH)2++HAenol and; (iii) Fe(OH)2++A−, both of which has a dissociative character.
The Effect of α-Tocopherol on Polymerization of Methyl Methacrylate
Authors: Enmanji Koe 
Published: July 2006

Abstract
Photo- and thermal polymerizations of methyl methacrylate (MMA) in the presence of α-tocopherol were investigated in air or in vacuo. α-Tocopherol at higher concentrations inhibits both the photopolymerization of MMA sensitized by benzoin ethyl ether and the thermal polymerization induced by benzoyl peroxide, but at lower concentrations is able to initiate photopolymerization of MMA under aerobic conditions. Spectral data indicate that a fraction of α-tocopherol is incorporated in the produced polymer chain.
Pyrolyse und Eigenschaften von Tris(2,3-epoxypropyl)- und Tris(2,3-epoxy-3-methylpropyl)-1,3,5-triazin-2,4,6(1H,3H,5H)-trion
Authors: Shimasaki Choichiro , Takeuchi Masanori , Tsutuguchi Junichiro , Shimizu Koichi , Yamakawa Hisato 
Published: July 2006

Abstract
Die Pyrolyse von Tris(2,3-epoxypropyl)-1,3,5-triazin-2,4,6(1H,3H,5H)-trion (1)[zwei Razem-Modifikationen: Typus (R,R,R)/(S,S,S) Schmp. 103–104 °C (1a); Typus (R,R,S)/(S,S,R) Schmp. 156–157 °C (1b)] und Tris(2,3-epoxy-3-methylpropyl)-1,3,5-triazin-2,4,6(1H,3H,5H)-trion (2) wurde bei thermischen Analysen untersucht. Der Spaltungsmechanismus durch Elektronenschlag von 1 und 2 wurde massenspektrometrisch untersucht. Die thermische Zersetzungsreaktion verläuft via die Bildung von 5-gliedrige Ringe (Oxazolidinon Ring) und dem Schmelzzustand. Eine kinetische Rechnung der thermischen Zersetungsreaktion auf Grund von DTA Kurven hat gezeigt, daß die Aktivierungsenergien der Zersetzungsreaktionen von 1a, 1b, und 2 jeweils 114,170, und 146 kJ mol−1 sind. Der Hauptspaltungsmechanismus fur der Zersetzung mit dem Elektronenschlag von 1 und 2 besteht aus fünf Spaltungsstilen. Der hochauflösende Massenspektrometrie bestätigte die Zusammensetzung einer großen Anzahl von Spitzen in niederauflösenden Massenstrahlenspektren. Mittels der Kernresonanzspektroskopie läßt sich auch Spinentkopplungen und Lösungsmitteleinflüsse bei 1 und 2 untersuchen.
Reactions of α-Lithiatd 4H-1-Benzothiopyran-4-one and 1,2-Dihydrocyclopenta[b][1]benzothiopyran-9(3H)-one Derivatives
Authors: Hirao Ichiro , Yamaguchi Masahiko , Terada Takashi , Hasebe Koichi 
Published: July 2006

Abstract
Treatment of 5- and 7-methoxy-2-methyl-4H-1-benzothiopyran-4-one with lithium diisopropylamide followed by electrophiles gave 2-substituted 4H-1-benzothiopyran-4-ones. Utilizing this reaction, 3-substituted 6- and 8-methoxy-1,2-dihydrocyclopenta[b][1]benzothiopyran-9(3H)-ones were also synthesized, and several compounds showed potential analgesic and anti-inflammatory activities.
Synthesis and Thermal Decomposition of Di-t-Butyl Peroxydicarbonate
Authors: Komai Takeshi , Matsuyama Kazuo 
Published: July 2006

Abstract
Di-t-butyl peroxydicarbonate(DBPD) has been synthesized in a novel route and thermally decomposed at 40–70 °C. The decomposition exhibits first-order kinetics and the values of ΔH\eweq and ΔS\eweq are 122 kJ mol−1 and 46 J K−1 mol−1, respectively. 2-Methyl-2-propanol is obtained quantitatively as a decomposition product and the rates are a little dependant on the viscosities of solvents, normal alkanes. The mechanism that involves the initial scission of the O–O bond is discussed and the values of the rates and the activation parameters of DBPD are compared with those of diacetyl peroxide and dibenzoyl peroxide.