15389-19-2Relevant academic research and scientific papers
Reactions of POxCly-ions with H and H 2 from 298 to 500 K
Midey, Anthony J.,Miller, Thomas M.,Morris, Robert A.,Viggiano
, p. 2559 - 2563 (2008/03/12)
Rate constants and product branching ratios for POxCl y-ions reacting with H and H2 were measured in a selected ion flow tube (SIFT) from 298 to 500 K. PO2Cl-, PO2Cl2-, POCl2-, and POCl3- were all unreactive with H2, having a rate constant with an upper limit of -12 cm 3 s-1. PC2Cl2- did not react with H atoms either, having a similar rate constant limit of -12 cm3 s-1. The rate constants for PO 2Cl-, POCl2-, and POCl 3- reacting with H showed no temperature dependence over the limited range of 298-500 K and were approximately 10-20% of the collision rate constant Cl abstraction by H to form HCl was the predominant product channel for PO2Cl-, POCl2-, and POCl3-, with a small amount of Cl- observed from POCl2- + H. Reactions of O2 and O 3 with the POCl- products ions from the reaction of POCl2- + H were observed to yield predominantly PO 3- and PO2-, respectively. POCl - reacted with C2 and O3 with rate constants of 8.9 ± 1.1 × 10-11 and 5.2 ± 3.3 × 10 -10 cm3 s-1, respectively. No associative electron detachment in the reactions with H atoms was observed with any of the reactant ions; however, detachment was observed with a PO- secondary product ion at high H atom concentrations. Results of new G3 theoretical calculations of optimized geometries and energies for the products observed are discussed.
Reaction kinetics of PO2Cl-, PO2Cl 2-, POCl2- and POCl3 - with O2 and O3 from 163 to 400 K
Fernandez, Abel I.,Midey, Anthony J.,Miller, Thomas M.,Viggiano
, p. 9120 - 9125 (2008/10/09)
Rate constants and product ion branching fractions for the gas-phase reactions of O2 and O3 with the anions (a) PO 2Cl-, (b) POCl3-, (c) POCl 2-, and (d) PO2Cl2- were measured in a selected-ion flow tube (SIFT). The kinetics were measured at temperatures of 163-400 K and a He pressure of 0.4 Torr. Only PO 2Cl- reacts with O2 to a measurable extent, having k(163-400 K) = 1.1 × 10-8(T/K)-1.0 cm 3 molecule-1 s-1, while O3 reacts with all of the anions except PO2Cl2-. The fitted rate constant expressions for the O3 reaction with anions a-c are as follows: ka(163-400 K) = 3.5 × 10-6(T/K) -1.6, kb(163-400 K) = 4.0 × 10 -7(T/K)-1.2, and kc(163-400 K) = 3.7 × 10-7(T/K)-1.4 cm3 molecule-1 s -1. Calculations were performed at the G3 level of theory to obtain optimized geometries, energies, and electron affinities (EAs) of the reactant and product species, as well as to determine the reaction thermochemistry to help understand the experimental results. The POxCly - anions that have lower electron binding energies (eBE) and higher spin multiplicities are more reactive. The doublets are more labile than the singlets. How the extra electron density is distributed in the anion does not predict the observed reactivity of the ion. The reactions of PO 2Cl- with O2 and O3 yield predominantly PO3- and PO4-. The reaction of POCl2- with O3 yields mostly Cl- and PO2Cl2-, while the POCl 3- reaction with O3 yields mostly O 3- and PO2Cl2-.
A study of the products of the reaction of phosphorus and dioxygen
Bauschlicher Jr., Charles W.,Zhou, Mingfei,Andrews, Lester
, p. 3566 - 3571 (2007/10/03)
The products of the reaction of laser-ablated red phosphorus and dioxygen have been studied using experiment and theory. The bands at 480.3 and 1273.3 cm-1, previously attributed to PO3 in the matrix isolation IR experiments, are reassigned to PO3- Also observed in experiment are PO2, PO2-, P2O, OPOPO, P4, and higher oxides.
Ueber die Reaktion von Harnstoff mit Ammoniumhydrogenamidophosphat unter dem Atmosphaerendruck
Shimasaki, Choichiro,Hara, Mitsunari
, p. 3613 - 3616 (2007/10/02)
Die Reaktion von Harnstoff mit Ammoniumhydrogenamidophosphat (NH4HPO3NH2) im Schmelzzustand unter dem Atmosphaerendruck ergibt, dass die Bildung des Guanidinumions (GH+) zusammen mit dem Phosphation bei ca. 160
