bluuebunny/crossref_metadata_2025_split huggingface dataset:
Carbon‐13 NMR Studies of Some Sydnone Derivatives
Authors: Ma Sun , Yeh Mou‐Yung 
Published: June 2015

AbstractThe natural abundance carbon‐13 nuclear magnetic resonance spectra of 3‐arylsydnone, 3‐aryl‐4‐formylsydnone, 4‐acetyl‐3‐arylsydnone, 3‐aryl‐4‐cyanosydnone as well as some derivatives of the above compounds have been studied. The data indicate that the electron withdrawing effect on the C4 atom of the sydnone ring decreases in the sequence: C≡N>COCH3∼CHO. The solvent effect on the chemical shift has also been investigated.
Reaction Dynamics of Electronically Excited Alkali Atoms with Simple Molecules
Authors: Weiss Paul S. , Mestdagh Jean‐Michel , Schmidt Hartmut , Vernon Matthew F. , Covinsky Michael H. , Balko Barbara A. , Lee Yuan T. 
Published: June 2015

AbstractThe reactions of electronically excited sodium atoms with simple molecules have been studied in crossed molecular beams experiments. Electronically excited Na(32P3/2,42D5/2, and 52S1/2) were produced by optical pumping using single frequency dye lasers. The effects of the symmetry, and the orientation and alignment of the excited orbital on the chemical reactivity, and detailed information on the reaction dynamics were derived from measurements of the product angular and velocity distributions.
Theory of Multi‐Photon Ionization of Atoms and Molecules
Authors: Fain B. , Kono H. , Lin S. H. , Henke W. E. , Selzle H. L. , Schlag E. W. 
Published: June 2015

AbstractIn this paper we present a density matrix formalism to treat one‐photon ionization and multiphoton ionization of atoms and molecules in the presence of an external field. It is shown that Fano's results for one‐photon ionization without an external field can easily be obtained from our formulation. For comparison, the Green's function method applied to multiphoton ionization of molecules is also presented.
Rotational Isomerism in O‐Methylphenol: Matrix‐Isolation Infrared Study and MNDO Calculations
Authors: Lin Ching‐Erh , Hsieh Ying Kang , Wu Yi‐Shuen , Tai T. L. , Chang S. L. 
Published: June 2015

AbstractRotational isomerism in o‐methylphenol was studied by matrix‐isolation infrared spectroscopy and MNDO calculations. Monomer molecules were isolated both in the argon matrix and in the nitrogen matrix near 10°K. The resolution of one weak band from the main hydroxyl absorption in the stretching and torsional regions evidently indicates the existence of two stable rotational isomers. Results of MNDO semi‐empirical molecular orbital calculations with full geometry optimization indicate that only two stable conformations can exist with the trans (stag) conformation being more stable than the cis (stag) conformation by 3.32 KJ/mole. The present experimental data are interpreted with the aid of theoretical MNDO calculations. The agreement between experiment and theoretical calculations is excellent. However, it was found that the CNDO/2 calculations would give misleading predictions on the relative stabilities of rotational isomers in the present case.
Intermolecular Nuclear Relaxations and Molecular Site‐Site Pair Correlation Functions in Liquids
Authors: Ju Chang‐Yuan , Hwang Lian‐Pin 
Published: June 2015

AbstractIntermolecular nuclear relaxation studies of real liquids and the results of theoretical calculations for model potential functions have provided significant information on the role of molecular interactions in the structure of liquids. The intermolecular proton‐proton paircorrelation function (pcf), obtained from the reference interaction site model (RISM) is used as the equilibrium distribution and is used to obtarn an effective force for the calculation of intermolecular proton relaxation rates in liquid benzene, 1,3,5‐trideuterobenzene and ethane. For liquid ethane, better agreement with experiment is observed with the pcf obtained from the Monte Carlo simulation than with the RISM result.
Metal Oxide Film Anodes in the Electrolysis of Water or Brine
Authors: Hsu Shin‐Chu , Hseu Tong‐Ming , Lin Zui‐Feng 
Published: June 2015

AbstractMetal (M) oxide (M: Ir, Os, Pd, Pt, Rh, Ru) together with MaO2 and MnO2 alone, were coated on SnO2 films and the anode behavior was examined in 1.0 N H2SO4, 1.0 N NaOH and 1.0, N NaCl aqueous solutions at 25°. The results are compared with those of DSA and of metallic Pt.
Crystal and Molecular Structure of Carbonyl (1,1,4,4‐Tetrafluoro‐2‐tert‐Butyl‐1,4‐Disilabut‐2‐Ene) (η5‐Cyclopentadienyl) Cobalt (II)
Authors: Lin W.P. , Liu C.S. , Wang Y. , Lee G.H. 
Published: June 2015

Abstract(C3H5)Co(CO)(Si2F4C4H10) was synthesized by the photochemical reaction between dicarbonyl (η5‐cyclopentadienyl) cobalt and 1,1,2,2‐tetrafluoro‐1,2,‐disilacyclobutene. Its structure was identified by IR, NMR and mass spectrometry. The single crystal structure was studied for confirmation. The compound crystalized in a monoclinic space group P21/n with unit cell a=7.120 (6), b=20.334. (3), c=10.682(1) Å, β=90.97(8)°, Z=4 final R=0.050 for 3667 observed reflections. The molecule has a mirror plane symmetry about the Co atom coordination sphere. The reaction between the cobalt carbonyl and the 1,2‐disilacyclobutene produces only silicon‐cobalt σ bonds.
Comparative Study of Nickel Catalysts Supported on X‐ and Y‐Zeolites
Authors: Chien Shu‐Hua , Lu Kuang‐Lieh , Huang Hsiau‐Wen 
Published: June 2015

AbstractWe have made a comparative study of CO/H2 reactions over the nickel catalysts supported on X‐ and Y‐zeolites, prepared by incipient‐wetness impregnation (W) and ion‐exchange (E) methods. The catalysts were characterized by surface area and volumetric chemisorption measurements, temperature programmed reduction profiles, and x‐ray diffraction analysis. The results show that the turnover frequency decreases in the order; NiX(W)>NiY(W)>NiY(E)>NiX(E). The metal dispersion and catalytic activity of the catalyst are mainly affected by the support materials, the preparation methods, and the activation procedures. The high activity of NiX(W) was due to its higher reducibility, smaller nickel crystalline size, and better nickel dispersion. The low activity of NiX(E) was attributed to the poor ion‐exchange of Ni with NaX, the poor reducibility, the large crystalline size, and the poor nickel dispersion.
Nickel Boride Catalysts in Organic Synthesis (IV). The Effect of Water Washing on P‐2 Nickel Boride Catalyst
Authors: Sheu L. L. , Chen Y. Z. , Rei M. H. 
Published: June 2015

AbstractWater washing of P‐2 nickel boride brings about a new catalyst designated as P‐2W nickel boride. This P‐2W catalyst is more reactive than P‐1 or P‐2 in the hydrogenation of cyclohexanone and nitrobenzene. The P‐2W, however, is less selective than P‐2 in the hydrogenation of cyclic olefins.
Synthetic Applications of the Direct Alkylation Reactions of 3‐Sulfolenes
Authors: Tso Hsi‐Hwa , Chang Lee‐Jean , Lin Lung Ching , Chou Ta‐Shue 
Published: June 2015

AbstractThe readily available sulfolenes can be used as the 1‐carbanion equivalent of the unsubstituted and substituted buta‐1,3‐dienes which can be directly alkylated. This convenient synthetic method is not only regiospecific, efficient and straight forward, but also favorable because the normally unstable molecules containing conjugated dienyl moiety can be prepared directly in their protected forms. The deprotection step is both clean and highly stereoselective. The applications of this type of reaction in organic synthesis include the trans‐β‐ocimene, α‐farnesene and a series of hydroindans and hydronaphthalenes.
Synthesis and Properties of Trimethylphenoxy‐ and Tetramethylphenoxy‐Silanes
Authors: Yang Mei‐Hui , Liang Jung‐Chang , Chao Ito , Liu Sheng‐Lieh 
Published: June 2015

AbstractTwelve new Trimethylphenoxy‐ and Tetramethylphenoxy‐silanes were synthesized and all were proved to be stable toward hydrolysis. The substituent effect of methyl groups on the stability of Si‐O‐Ar toward hydrolysis is also discussed.
A New Lignan, Formosanol, from Juniperus Formosana
Authors: Kuo Yueh‐Hsiung , Chen Wen‐Chau , Wu Tseng‐Rong 
Published: June 2015

AbstractA new lignan, formosanol, has been isolated from Juniperus formosana Hayata and elucidated as formula (5a) by spectra and chemical evidences.
Indo‐Mo Model with s·p Separation
Authors: Chen Cheng , Ellison Frank O. , Chang Mingtzon , Chou Jinlung 
Published: June 2015

AbstractA newly developed self‐consistent‐field molecular orbital theory is described and tested. The intermediate neglect of differential overlap (INDO) approximation is used, and all interaction integrals are differentiated according to their dependence upon 2s and 2p AO's. The bonding parameter βl is reformulated so that the model is calibrated to only one specific molecular property, namely, the ionization energy of Hi. We expect that this model will not be biased toward any special families of molecules.
Catalytic Spectrophotometric Determination of Vanadium by Flow Injection Analysis
Authors: Hwang J.M. , Tsung J.C. , Chen Y.M. 
Published: June 2015

AbstractDetermination of trace amount of vanadium in water was studied by flow injection analysis. Catalytic spectrophotometric detection was performed with bromate oxidation of o‐phenylenediamine and by addition of tiron as an activator and also as a masking agent. Vanadium can be determined with sample rate of ca. 60–70 samples/hour with in a range of 0.01 ppm to 0.5 ppm V and with r.s.d. 0.555% for 0.1 ppm V and 0.37% for 0.3 ppm V. Interference by Fe(III) can be reduced by using 0.3% NH4F as a carrier solution.
Synthesis and Characterization of Bridged Bimetallic Complexes. I. Copper(II) Complexes with Conjugated Diimine Ligands
Authors: Wang Wen‐Jwu , Ho Chia‐Tai 
Published: June 2015

AbstractA series of binucleating Uganda with fully conjugated π‐systems have been synthesized. Homobinuclear copper(II) complexes of the form [(Cu(dien)ClO4)2L]‐(ClO4)2, where dien is diethylenetriamine and L is binucleating ligand, were prepared. Mononuclear complexes, with structure similar to that of the preceeding compounds, [Cu(dien)L′(ClO4)](ClO4) were synthesized as reference compounds. The infrared spectra, elctronic spectra and magnetic properties were studied. The inductive effect, steric effect and the effect of the length of the conjugated π‐system on the magnetic exchange interaction between the two copper ions are discussed. The electrochemical properties of these complexes were investigated by cyclic voltammetry. The copper ions showed the cooperative phenomena and a quasi‐reversible sequential transfer of two electrons at the same potential.
Kinetic Studies of the Catalytic Effect of Cobalt(II) Ions on the Substitution Reactions of the Ethylenediaminetetraacetatocobalt(III) Complex
Authors: Yu Joyce , Tung Hui‐Chan , Yeh Andrew 
Published: June 2015

AbstractThe rate for the substitution reaction of Co(edta)− with ethylenediamine was greatly enhanced by the presence of an excess of Co(II) ion in solution. The rate constant is (13±2) M−‐sec−1 at μi=0.10M LiClO4, pH=11.1, [en]=0.10M and T=25°C. The mechanism for the reaction is discussed on the basis of the Marcus theory for outer‐sphere processes corrected for electrostatic effects. This catalytic effect was not observed when the Co(II) was present in small amount due to the stability of the Co(edta)−2 complex toward substitution. The rate constant for direct substitution of Co(edta)− under the same conditions has also been measured and the value is (3.66±0.40)×10−4sec−.
Photochemical Synthesis and Characterization of 8,9‐Dihydroacenaphtho‐[1,2‐b][1,4]Dioxins
Authors: Fang Tai‐Shan , Mei Wang‐Ping , Chang Tsing‐Hsing , Shih‐Chen S.J. 
Published: June 2015

AbstractThe orange‐red 8,9‐dihydroacenaphtho[1,2‐b] [1,4]dioxins were synthesized by the photo‐Diels‐Alder reaction of acenaphthenequinone with the corresponding alkenes. The products were characterized by spectroscopic and X‐ray methods.
A New Synthesis of 2‐(6‐Methoxycarbonylhexyl)‐Cyclopent‐2‐EN‐1‐One Using α‐Silylallyl Sulphide
Authors: Chen Ling‐Ching , Wu Shihn‐Sheng 
Published: June 2015

AbstractAcylation of the α‐trimethylsilylallyl phenyl sulphide (2). by reaction with the acid chloride (3), catalyzed by aluminium chloride in CH2Cl2 at −78°C, gave methyl 9‐oxo‐12‐phenylthio‐11‐dodecene (4). Hydrolysis of (4) followed by aldol condensation gave 2‐(6‐methoxycarbonylhexyl)‐cyclopent‐2‐en‐1‐one (6).
Structural Relationships between the Hemiporphyrazine Macrocyclic Ligand and its Metal Complexes. II.: Planar Neutral Ligand, C26H16N8, and Four Isomorphous Metal Complexes, [M(C26H16N8)(H2O)], M=Mn(II), Co(II), Cu(II), Zn(II)
Authors: Peng Shie‐Ming , Wang Yu , Chen Chun‐Kuei , Lee Jang‐Yen , Liaw Der‐Shin 
Published: June 2015

AbstractCrystal and molecular structures of the planar neutral ligand, C26H16N8, and the four isomorphous five‐coordinated metal complexes, [M(C26H16N8)(H2O)], M = Mn(II), Co(II), Cu(II), Zn(II), have been determined from three‐dimensional X‐ray diffraction data. The free ligand hpH2, C26H16N8, belongs to the P 21/c space group with Z=2, a=4.142(3), b=23.736(6), c=10.338(3) Ä, β=94.66(6)°. The metal complexes monohydrate Mhp‐H2O all belong to the orthorhombic Pcab space group with Z=8. The dimensions are roughly 8.8×19.3×23.7 Å3. In each structure, the macrocyclic ligand has an almost planar conformation which differs from the saddle shaped ligand hydrate (hpH2·H2O) and the nickel complex [Nihp]5. The distances from the center of the macrocyclic ring to the nitrogen atom of the free ligand are 1.907(6) and 2.245(6)Å. The coordination geometry in these four complexes is square pyramidal with a water molecule as an axial ligand. The bond distances of M(II)‐O(H2O), M(II)‐N1 (imine), M(II)‐N3 (pyridine) are: 2.19(1), 2.00(2), 2.27(2)Å respectively for the manganese complex; 2.08(1), 1.97(1), 2.23(1)Å for the cobalt complex; 2.33(1), 1.92(3), 2.18(1)Å for the copper complex; 2.110(5), 1.964(6), 2.252(6)Å for the zinc complex. The variation of metal‐ligand distances can be correlated to the metal d orbital occupancy. A comparison with similar ligands will be presented.
A New Calibration Method for the Gel Permeation Chromatographic Fractionation of Polymers
Authors: Su Shyh‐Gong , Mou Chung Yuan 
Published: June 2015

AbstractA model for the mechanism of the Gel permeation chromatographic separation of a polymer and a new calibration method have been developed, based on the exclusion of the polymer from the pores of the packing material. We propose that the calibration curve a plot of log (1—√K) versus log (molecular weight), where K is the elution volume coefficient, is close to linear over a K range of 0.15–0.85. We compare our procedure with that of Haller for various sets of data. Our procedure is generally better with lower standard deviations. When extrapolated, it gives a critical permeation size characteristic of the glass column packings.
Cycloaddition Reactions of 3,5‐DI‐t‐Butyl‐o‐Benzoquinone and Masked 3,5‐DI‐t‐Butyl‐o‐Benzoquinones with Substituted Acetylenes)
Authors: Liao Chun‐Chen , Lin Ho‐Shen 
Published: June 2015

AbstractCycloadditions of 3,5‐di‐t‐butyl‐o‐benzoquinone with diphenylacetylene, dimethyl acetylenedicarboxylaet, 3‐hexyne, phenylacetylene, methyl propiolate, 1‐octyne and 3‐hydroxy‐3‐methyl‐1‐butyne were studied. The reactions occur periselectively across the diene moiety of 3,5‐di‐t‐butyl‐o‐benzoquinone to give bicyclo[2.2.2]octa‐5,7‐diene‐2,3‐diones. In the cases of monosubstituted acetylenes, the reactions take place regioselectively. The selectivities are explained in terms of electronic and steric effects.The cycloadditions of two masked 3,5‐di‐t‐butyl‐o‐benzoquinones 7 and 8 with monosubstituted acetylenes, phenylacetylene, methyl propiolate, 1‐octyne and 3‐hydroxy‐3‐methyl‐1‐butyne were also examined. Compound 7 reacts with high regioselectivity to give only bicyclo[2.2.2]octa‐5,7‐diene‐2,3‐diones 10 upon subsequent hydrolysis; the high regioselectivity was explained as the result of coherent electronic and steric effects. Compound 8 reacts with monosubstituted acetylenes to give either 9 or 10 or both upon subsequent hydrolysis, depending on the nature of the substituents on acetylene. This results from the opposite influences of electronic and steric effects.
EPR Studies of (3, 5‐di‐t‐Butyl‐0‐Benzoquinone) Tetracarbonylrhenium(0) Radical
Authors: Cheng C. P. , Wang S. R. , Chou T. C. 
Published: June 2015

AbstractThe organometallic radical: (3,5‐di‐t‐butyl‐0‐benzoquinone)tetracarbonyl‐rhenium(0) and its triphenylphosphine substituted derivatives were studied by EPR spectroscopy. The unpaired electron is shown to be localized in the organic 1,2‐diketone ligand. The rate of carbonyl substitution by triphenylphosphine at the unsubstituted rhenium radical indicates a second order reaction. The activation parameters are ΔH* =19.1±0.8Kcal/mole and ΔS*‐3.0±1.5 eu/mole.
On the Electrochemical Behaviour of Some 2,3‐Dihydrothiazolo[3,2‐a]Benzimidazol‐3‐One and 1‐Ethylmercapto‐3(4H)‐Isoquinolones Derivatives
Authors: Fahmy H. M. , Aboutabl M. , Abdel Azzem M. 
Published: June 2015

AbstractThe electrochemical behaviour of several derivatives containing the sequence S‐C‐CO‐N in their structure presented as such or in masked form in both aqueous and non‐aqueous media are reported. The results of electrooxidation indicated that when the S atom is present as hetero atom in the structure of the molecule the main product will be the sulphone derivative, on the other hand when present in the form C=S the preferential product is the dimer. The overall redox study indicated that the azo group at C‐2 is very active in both aqueous and non aqueous media. On the other hand derivatives substituted at C‐2 the preferential electrochemical step is the attack of the hetero ring itself.
Mixed Ligand Complexes of Palladium (II) with Diethylenetriamine as Primary Ligand and Peptides as Secondary Ligand
Authors: Soukry Mohamed M. , Darwish N. A. , Hosny W. M. 
Published: June 2015

AbstractSolution equilibria of the system palladium (II)‐diethylenetriamine (dien) and peptides have been studied. The pH‐metric titration of the reaction mixture containing equimolar solutions of palladium (II), dien and peptide have shown the formation of 1:1:1 mixed ligand complex. The pKe of the peptides studied and formation constants of the resulting complexes have been determined at 25°C. The mode of chelation has been deduced from the conductivity measurements.
Studies of Surface Sulfidation and Distribution of Sulfur on Cu‐ZnO Catalysts
Authors: Chen Y. W. , Lai L. B. 
Published: June 2015

AbstractThe changes in the surface areas of copper and zinc oxide have been measured to evaluate the individual rates of sulfur coverage of each of these phases during catalyst exposure to sulfur‐containing gas. Zinc oxide surface areas have been measured by CO2 adsorption and copper surface areas by measurement of the nitrogen formed by exposure to nitrous oxide. The surface areas of both components decreased exponentially with increasing exposure time to the sulfur‐containing gas. The zinc oxide component is more sulfur‐resistant than copper. This is attributed to either kinetic limitation or the more stable surface sulfides of zinc.
The Thermal Reaction of the Tris(μ‐Hydrido)‐Dodecacarbonyltrirhenium (o) Cluster with Triphenylphosphine and Triphenylphosphite
Authors: Liu Ling‐Kang , Lin S. C. , Cheng C. P. 
Published: June 2015

AbstractThe thermal reaction between the tris(μ‐hydrido)dodecacarbonyltrirhenium (o) cluster and triphenylphosphine or triphenylphosphite results in a trisubstituted rhenium cluster as the major product. The results of an X‐ray structural analysis of H3Re2(CO)9(PPh3) are: Mr=1597.57, Monoclinic, P21/n, a=15.598(1), b=9.530(2), c=41.685(3) Å, β=80.60(1)°, V=6113.(1) Å3, Z=4, Dc=1.736 g/cm3, CuKe, λ‐1.54056 Å, μ‐121.23 cm−1, F(000)=3059.17, room temperature, R=0.049 for 7361 reflections with I≥2.5σ(I). The molecule has a triangular Re2 core coordinated propellerwise by three PPh3 ligands in the molecular plane with virtual C3k symmetry.
Metal Chelates of Hydrazo‐Dimedon Dyes. Chelating Tendencies of 5,5‐Dimethylcyclohexane‐2‐(2‐Carboxyphenyl, and 3‐Carboxyphenyl)‐Hydrazono 1,3‐Dione (DC‐2‐CPHD and DC‐3‐CPHD)
Authors: Ramadan Atef A. T. , Abdel‐Moez Mohammed S. , Eid Mohammed F. 
Published: June 2015

AbstractThe consecutive stepwise formation constants of 1:1 and 1:2 chelate species formed by the interaction of DC‐2‐CPHD and DC‐3‐CPHD anions with tripositive lanthanon and divalent copper, nickel, cobalt, zinc, manganese, and cadmium cations were determined potentiometrically at ionic strengh of 0.1 (KNO3) and 30°C. The results indicate that two different coordination modes, one tridentate (DC‐2‐CPHD), and one bidentate (DC‐3‐CPHD), are in evidence.
Studies on the Constituents of Callicarpa Formosana Rolfe
Authors: Chen Rong‐Shiow , Lai Jeng‐Shiow , Wu Tian‐Shung 
Published: June 2015

AbstractTwo new naturally occurring flavonoids, 3,4′,5,7‐tetramethoxyflavone and 3,3′,4′,5,7‐pentamethoxyflavone, along with known compounds, 5‐hydroxy‐3,4′,7‐trimethoxyflavone, 5‐hydroxy‐3,3′,4,7‐tetramethoxyflavone, ursolic acid, 2α,3α‐dihydroxyurs‐12‐en‐28‐oic acid, phytosterols, and phytosteryl glucosides, have been isolated and characterized from the fresh leaves of Callicarpa formosana Rolfe.
The Oxidation of Isoquinoline Alkaloids with m‐Chloroperbenzoic Acid
Authors: Lu Sheng‐Teh , Wu Yang‐Chang , Leou Shiow‐Plaw 
Published: June 2015

AbstractThe physical properties of the N‐oxides prepared by the oxidation of tertiary isoquinoline alkaloids with m‐chloroperbenzoic acid are presented and are compared with those of their parent alkaloids.
A Tin(II) Chloride Based Reduction Method for Multiple‐Metal Trace Analysis of Natural Waters
Authors: Jaffar M. , Ashraf M. , Tariq M. 
Published: June 2015

AbstractBased on tin(II) chloride reduction in basic medium, a method of general use is proposed for the estimation of the whole gamut of multiple trace metals in natural waters by the atomic absorption method. The quantitative aspects of the method related to variables such as pH of the medium, amount of reductant and operational conditions are studied as a function of absorption sensitivity. The proposed method utilizes only a 50.0 ml portion of the water sample and yields above 90 per cent recoveries for various metals from a single aliquot of the sample. The reported data pertain to the estimation of silver, chromium, copper, iron, lead, mercury, manganese, magnesium, nickel and strontium, reported as averaged over replicate measurements at +‐2S confidence level. The precision in individual cases is found to be better than +1.8%.
Product Determination of Gaseous Radical Reactions Using Matrix Isolation‐Ftir Detection
Authors: Kuo Yu‐Ping , Ju Shan‐Sfian , Lee Yuan‐Pern 
Published: June 2015

AbstractThe matrix isolation technique with Fourier transform infrared detection has been applied to determine the products of gaseous radical reactions. The gas phase reactions were carried out in a discharge flow system and about 1% of the gas mixture was deposited onto a low temperature target through a pinhole. A differential pumping scheme was employed to maintain the pressure of the cryosystem below 10−5 torr while that of the flow system was kept at about 2 torr.Species including HO2 (from the H+O2 reaction), ClO2 (from the Cl+O2 reaction) and ClO (from the Cl+O3 reaction) have been produced in the gas phase and were successfully trapped in matrices and detected with an FTIR spectrometer. In addition, both HCl and HOCl have been detected as the reaction products from the gaseous ClO+HO3 reaction. The production of HCl from the ClO+HO2 reaction may have a significant impact on catalytic ozone destruction in the atmosphere.