A systematic study of the third-order nonlinear optical co-crystal of bis-((diisopropyl)ammonium) dichromate: X-ray, Hirshfeld surface, Optical, and Mechanical analysis

Aryl selenonium vs. aryl sulfonium counterions in polyoxometalate chemistry: the impact of Se+ cationic centers on the photocatalytic reduction of dichromate

“…In the FT-IR spectra of the recycled hybrid, an additional peak related to Cr-O bond vibration of the adsorbed dichromate anion appears at 803 cm −1 . 56,57 However, the XPS analysis of the recycled catalyst (hybrid 2) after 4 cycles of catalysis showed new deconvoluted peaks at 55.7 eV and 56.5 eV, with spin-orbit splitting of 0.8 eV. These peaks are assigned to Se 3d 5/2 and Se 3d 3/2 , attributable to elemental selenium as per…”