12259-29-9

Upstream product

• 7732-18-5 water 
• 77144-12-8 CH₂OOH⁽¹⁺⁾ 
• 59348-27-5 CHS₂⁽¹⁺⁾ 
• 7446-11-9 sulfur trioxide 
• 56583-62-1 water cation 
• 7783-06-4 hydrogen sulfide 
• 7664-39-3 hydrogen fluoride 
• 64-19-7 acetic acid 
• 7782-49-2 selenium 
• 7789-21-1 fluorosulphonic acid 
• 7697-37-2 nitric acid 
• 7601-90-3 perchloric acid 
• 11113-50-1 boric acid 
• 16910-62-6 1,8-dihydroxynaphthalene-3,6-disulfonate dianion 

Downstream Products

• 574-93-6 29H,31H-phthalocyanine 
• 7732-18-5 water 
• 22541-53-3 cobalt(II) 
• 92074-27-6 [4-(benzyloxy)but-1-en-2-yl]tributylstannane 
• 92074-22-1 (E)-4-benzyloxy-1-tributylstannyl-1-butene 
• 69762-26-1 [AsPh₄][(dimethylglyoximato)2MeRhCNRhMe(dimethylglyoximato)2] 
• 52519-12-7 [NEt₄][(dimethylglyoximato)2(CH₂C₆H₄F-4)CoCNCo(CH₂C₆H₄F-4)(dimethylglyoximato)2] 
• 69727-99-7 tetraphenylarsonium μ-cyano-bis[bis(dimethylglyoximato)4-fluorobenzylrhodate(III)] 

Relevant academic research and scientific papers

Pressure and temperature dependences of the binary ion-molecule reaction N3+ + H2O-->H2NO+ + N2

Experiments were carried out using a time-resolved atmospheric pressure ionization mass- spectrometer (TRAPI) in N2-H2O (1 ppm) system at temperatures from 233 to 543 K and at pressures from 167 to 760 Torr.The title reaction showed temperature and pressure dependences which were explained by the following scheme: N3+ + H2O(N3+*H2O)* (forward and backward rate constants ka and kb; (N3+*H2O)*-->H2NO+ + N2 (forward rate constant kp; (N3+*H2O)* + N2-->H2NO+ + 2N2 (forward rate constant kd).Assuming that kd is equal to the collision rate constant of 7.1*10-10 cm3 s-1, the individual rate constants were determined as ka = 2.8*10-9 cm3 s-1 (302 K), kb = 17T3.6 s-1 where Tis temperature in K, and kp = 2.0*109 s-1 ( 302 K) .The product H2NO+ ion changed by successive reactions with H2O into H2NO+*H2O and subsequently to H3O+.

The A 2A1-X 2B1 transition of H2O+ in the near infrared region

A titanium sapphire laser spectrometer along with velocity modulation detection was used to record, between 12 000 and 13 400 cm-1, the absorption spectrum of the A 2A1-X 2B1 electronic transition of H2O+ produced in an ac glow discharge with a gas mixture of He/H2O. The Σ(0,7,0)-(0,0,0) transition has been observed at 13 411 cm-1 and revised rotational assignments are presented. The Δ(0,7,0)-(0,0,0) and Π(0,6,0)-(0,0,0) transitions have been observed for the first time, at 13 331 and 12 494 cm-1, respectively. The vibrational assignment follows the vibrational numbering of Brommer et al. [J. Chem. Phys. 98, 5222 (1993)]. The rotational analysis was performed using the combination differences technique. Strong perturbations are observed, they are tentatively explained in term of rovibronic interactions. A set of effective molecular parameters has been obtained for each vibrational level of the A state. The values of the spin-orbit parameter are reported, they illustrate the vibronic coupling between the two electronic states.

Observation of the visible absorption spectrum of H2O+

The A2A1-X2B1 system of H2O+ has been observed, using laser absorption spectroscopy in a velocity-modulated discharge.A total of 78 transitions between 14 794 and 15 475 cm-1 have been observed with an uncertainty (1 SD) of 0.02 cm-1, including 76 transitions in the (0,7,0)-(0,0,0) band and 2 in the (0,8,0)-(0,0,0) band.This species is important for cometary astronomy, and intriguing for molecular physics because of its prominent Renner-Teller interaction.Careful measurements were made of the relative intensities of the absorption lines, which were measured to an accuracy of 13percent (1 SD).This is the first observation of the >A-X transition in absorption; all previous data were obtained in emission with conventional grating spectroscopy.The transition frequencies of our new data are in good agreement with previous work, and have improved accuracy.The new data have definite rejection of the interfering lines from excited neutral H2 that plagues previous work.Compared with previous work, the new data have the first quantitative measurement of intensities.The ratio of the Franck-Condon factors I8/I7 = 0.99 +/- 0.43 has been measured for the first time, where Iv = FCF.

H3++O: An experimental study

We have measured the reaction rate coefficient and branching ratios for the H3++O atom reaction using a flowing afterglow/selected ion flow tube operating at room temperature (295±5 K). The measured rate coefficient was k=(1.2±0.5)×10-9 cm3 s-1 and the branching ratios were OH++H2, (70%) and H2O++H (30%). This reaction has some relevance to the synthesis of water in interstellar clouds.

Cross section and product time-of-flight measurements of the reaction of N2+ with H2O and D2O at suprathermal energies

Charge exchange and hydrogen atom pickup cross sections, and product ion time-of-flight measurements are reported for N2+-H2O(D2O) collisions at center-of-mass collision energies ranging between 1 and 15 eV.No isotope effect is detected for the

The yield of oxygen and hydrogen atoms through dissociative recombination of H2O+ ions with electrons

The branching ratios of the dissociative recombination of excited H2O+ ions with electrons were studied using a plasma flow tube experiment.The total oxygen atom channel accounts for 45percent of the recombination with more than 24percent in O + H + H .The remaining channel is OH + H for 55percent.These results are discussed in comparison with the few available theories and with photodissociation data.

Thermal decomposition of hydrogen peroxide in the presence of sulfuric acid

Hydrogen peroxide (H2O2) is popularly employed as a reaction reagent in cleaning processes for the chemical industry and semiconductor plants. By using differential scanning calorimetry (DSC) and vent sizing package 2 (VSP2), this study focused on the thermal decomposition reaction of H2O2 mixed with sulfuric acid (H 2SO4) with low (0.1, 0.5 and 1.0 N), and high concentrations of 96 mass%, respectively. Thermokinetic data, such as exothermic onset temperature (T 0), heat of decomposition (ΔH d), pressure rise rate (dP/dt), and self-heating rate (dT/dt), were obtained and assessed by the DSC and VSP2 experiments. From the thermal decomposition reaction on various concentrations of H2SO4, the experimental data of T 0, ΔH, dP/dt, and dT/dt were obtained. Comparisons of the reactivity for H2O2 and H2O2 mixed with H2SO4 (lower and higher concentrations) were evaluated to corroborate the decomposition reaction in these systems.

Excited state dynamics of liquid water: Insight from the dissociation reaction following two-photon excitation

The authors use transient absorption spectroscopy to monitor the ionization and dissociation products following two-photon excitation of pure liquid water. The primary decay mechanism changes from dissociation at an excitation energy of 8.3 eV to ionization at 12.4 eV. The two channels occur with similar yield for an excitation energy of 9.3 eV. For the lowest excitation energy, the transient absorption at 267 nm probes the geminate recombination kinetics of the H and OH fragments, providing a window on the dissociation dynamics. Modeling the OH geminate recombination indicates that the dissociating H atoms have enough kinetic energy to escape the solvent cage and one or two additional solvent shells. The average initial separation of H and OH fragments is 0.7±0.2 nm. Our observation suggests that the hydrogen bonding environment does not prevent direct dissociation of an O-H bond in the excited state. We discuss the implications of our measurement for the excited state dynamics of liquid water and explore the role of those dynamics in the ionization mechanism at low excitation energies.

Preferential oxidation of CO in H2 by aqueous polyoxometalates over metal catalysts

Stream cleaning: CO in CO/H2 mixtures is oxidized preferentially at room temperature with an aqueous polyoxometalate (POM) solution over gold catalysts (see scheme). The rate of H2 oxidation is slow and is inhibited by CO. This process can be used to remove CO efficiently from H 2 gas streams. The solution containing protons and reduced POM can be used to produce electrical energy at a fuel-cell anode through re-oxidation of the reduced POM.

Kinetic study of the complex formation of boric and boronic acids with mono- and diprotonated ligands

The complex formation reactions of boric and boronic acids (RB(OH)2: R=OH, n-Bu, Ph, and m-NO2Ph) with 4-isopropyltropolone (Hipt) and chromotropic acid (H2cht2-) have been studied kinetically at various pH. The reactions of H2ipt+ with boronic acids were faster than those of Hipt by a factor of 1.5-11, and fully deprotonated ipt- also reacted with m-NO2PhB(OH)2, but slower than Hipt. The tetrahedral m-NO2PhB(OH)3- ion did not react with Hipt. Reaction routes for the complexation of boric acid with chromotropic acid could not be specified because of the unexpected problem of proton ambiguity. Mechanism for the reactions of boronic acids with bidentate ligands was discussed in terms of rate determining chelate ring closure. It was concluded that at least one proton is necessary for the OH- in the tetrahedral intermediates to be eliminated smoothly as water, and a doubly hydrogen-bonded intermediate was proposed for the reactions with diprotic ligands.