The organization of polyiodide chains in the amylose-iodine complex was investigated by Raman spectroscopy, by UV/vis, and by second-derivative UV/vis spectroscopies complemented by semiempirical calculations based on a simple structural model. The Raman spectra indicate that the primary substructures of the polyiodide chains are I–3; and I; sub-units. The second derivatives of the UV/vis spect...

The structures of five polyiodide salts, [Co([9]aneS3)2]I11 (1), [Ni([9]aneS3)2]I6 (2), [Ni([9]aneS3)2]I10 (3), [Pd([12]aneS4)]I6 (4) and [Pd([14]aneS4)]I10.MeCN (5), containing the template cations [Co([9]aneS3)2]3+, [Ni([9]aneS3)2]2+, [Pd([12]aneS4)]2+ and [Pd([14]aneS4)]2+ ([9]aneS3=1,4,7-trithiacyclononane, [12]aneS4=1,4,7,10-tetrathiacyclododecane, [14]aneS4=1,4,8,11-tetrathiacyclotetradec...

The title compound, [Zn{(CH3)2SO}6]I4, is a one-dimensional supra-molecular polymer along a threefold rotation axis of the space group. It is built up from discrete [Zn{(CH3)2SO}6](2+) units connected through non-classical hydrogen bonds to linear I4 (2-) polyiodide anions (C-H⋯I = 3.168 Å). The Zn(II) ion in the cation has an octa-hedral coordination geometry, with all six Zn-O bond lengths be...

The reaction of 1,8-diaminooctane with hydroiodic acid in the presence of iodine gave a new polyiodide-containing salt: 1,8-diaminiumoctane bis(triiodide), (H3N(CH2)8-NH3)[I3]2. The title compound has been characterized by crystallographic and spectroscopic methods. The polyiodide ion is the first example of a hydrogen bonded I6 dianion consisting of two very asymmetric triiodide components wit...

Polyiodide species were synthesized by the acceleration of an acidic environment in nanospace single-walled carbon nanotubes (SWCNT) with light irradiation. Raman and EXAFS results strongly support production polyiodide after adsorption CsI on SWCNT from aqueous solution. Interestingly, reaction was initiated nano-confined phase formed a basic environment. The plays essential role as oxidant fo...

The reaction of bipyridine with hydroiodic acid in the presence of iodine gave two new polyiodide-containing salts best described as 4,4′-bipyridinium bis(triiodide), C10H10N2[I3]2, 1, and bis(4,4′-bipyridinium) diiodide bis(triiodide) tris(diiodine) solvate dihydrate, (C10H10N2)2I2[I3]2 · 3 I2 · 2H2O, 2. Both compounds have been structurally characterized by crystallographic and spectroscopic ...

Abstract Despite remarkable progress in solvent-assisted processing of hybrid perovskite thin films, the scalable fabrication their uniform and pin-hole free layers remains a difficult task, especially on flexible substrates. In contrast, we have demonstrated that polyiodide-assisted conversion Pb nanolayers into MAPbI 3 results formation crystalline films large substrates already at room tempe...

Iodine atoms align into a 1D polymeric polyiodide chain, stabilized with the surrounding phenanthrolinium cations.

Redox flow batteries are receiving wide attention for electrochemical energy storage due to their unique architecture and advantages, but progress has so far been limited by their low energy density (~25 Wh l(-1)). Here we report a high-energy density aqueous zinc-polyiodide flow battery. Using the highly soluble iodide/triiodide redox couple, a discharge energy density of 167 Wh l(-1) is demon...