On the utilization of chromium(II) ions for the syntheses of alkylenediaminetetraacetatochromate(III) complexes

Photochemistry of an ozone complex with trifluoroiodomethane in solid argon. Infrared spectra of CF3IO, CF3OI, and two CF2O--IF complexes

“…;c=o \ species S perturbed OCF2 complex. Since the frequency displacements are small, the intermolecular interaction is relatively weak, and a weak dipole-dipole attractive molecular pair is suggested for species 4. Sample annealing to 33 K over a 15-min period virtually destroyed species 4 and produced more than an order of magnitude growth in group 5 absorptions.…”

“…Rhodium trichloride trihydrate (1.32 g, 5 mmol) was dissolved in 3 cm3 of water in a Pyrex tube. To this mixture was added a solution obtained by dissolving 1.74 g (5 mmol) of H4edtp in 5 cm3 of 4 M NaOH (20 mmol). The tube was sealed and the mixture heated at 145 °C in a oil bath for 7 h. After that the mixture was cooled to room temperature and the tube was chilled in ice and opened carefully.…”

“…case of CH3IO, further irradiation gave two different CH20-HI complexes with the more stable species involving the hydrogenbonded arrangment. 4 The solid compound CF3IO has been prepared by ozonolysis of CF3I, but the infrared spectrum does not characterize the bonding in the -1-0 group. 5 There have been a number of matrix-isolation studies of simple halocarbon-oxygen species, and one of the aims of these studies was to ¡produce and trap the CF300 and CF30 radical species.6"10 Two studies have reported infrared spectra for CF300,7•9 but the CF30 radical has not been detected directly, although its formation is implied through the appearance of the peroxide.…”

Chelated Chromium Electrolyte Enabling High-Voltage Aqueous Flow Batteries

“…Given the strong binding constants for EDTA to both Cr 3+ (23.4) and Cr 2+ (13.6), 34 we expect that the complexed Cr ions are substantially favored thermodynamically over the free ion. 35 Although very slow decomposition cannot be ruled out without long-term durability studies, we note that EDTA is considered a persistent organic chemical that decomposes primarily through exposure to UV radiation. 36 We would anticipate that any decomposition of PDTA would also be accompanied by the precipitation of Cr 3+ ions as Cr(OH) 3 at pH 9, which was not observed, but any potential degradation could be mitigated by the addition of excess PDTA to the electrolyte solution.…”