16519-98-5Relevant articles and documents
Rate constants of the reaction of NO3 with CH3I measured with use of cavity ring-down spectroscopy
Nakano, Yukio,Ishiwata, Takashi,Kawasaki, Masahiro
, p. 6527 - 6531 (2005)
We have applied cavity ring-down spectroscopy to a kinetic study of the reaction of NO3 with CH3I in 20-200 Torr of N2 diluent at 298 K. The rate constant of the reaction of NO3 + CH 3I was determined to be (4.1 ± 0.2) × 10-13 cm3 molecule-1 s-1 in 100 Torr of N2 diluent at 298 K and is pressure-independent. This reaction may significantly contribute to the formation of reactive iodine compounds in the atmosphere.
Growth of Silver Halides from the Molecule to the Crystal. A Pulse Radiolysis Study
Schmidt, K. H.,Patel, R.,Meisel, D.
, p. 4882 - 4884 (2007/10/02)
Halide ions were produced in situ by pulse radiolysis, via electron transfer to dihalomethanes from solvated electrons or hydrogen atoms, and were then used to generate halide molecules and larger aggregates.This evolution of silver halide aggregates was studied for the case of silver iodide on the time scale of 1E-6-1E2 s.Conductivity detection allows determination of the rate of formation of the first AgI molecule.Spectrophotometric detection of the growth of the particles from the stage of the molecular species to colloidal particles of bulk electronic properties is then possible.When the aggregates thus formed approach sizes of ca. 50 Angstroem, their detection by light scattering provides an independent method of size determination.In the region where such measurements are possible, the sizes determined by light scattering agree with sizes calculated assuming confinement of excitons in small particles and their electron-hole coulomb screening.A similar approach is suggested for growth studies of other insoluble materials.
Cracking of (5-(13)C)-n-Nonane with Quartz Wool, Silica-Alumina and Type Y Zeolite
Weeks, Thomas J.,Ladd, Irwin R.,Bolton, Anthony P.
, p. 84 - 91 (2007/10/02)
The cracking mechanism of (5-(13)C)-n-nonane has been studied over quartz wool, silica-alumina and a type Y zeolite.The products observed at a reaction temperature of 510 deg C over quartz wool agree reasonably well with the currently accepted mechanism of free radical cracking.Reaction with silica-alumina at 500 deg C and zeolite at 230 deg C results in a (13)C labelled product distribution which agrees with neither a thermal cracking mechanism nor the currently accepted mechanism of β-scission of carbonium ion intermediates.Rather, the data suggest that the product distribution is a result of the temperature-dependent random description and cracking of a complex polymeric precursor.
