title: Resonance Raman study of the polyiodide complex formed in the reaction of iodine with the polysulphur cyclic base 1,4,7,10,13,16-hexathiacyclooctadecane.
abstract: Resonance Raman spectroscopy has been used to study the reaction of iodine with the interesting polysulphur cyclic base, 1,4,7,10,13,16,-haxathiacyclootadecane (HTCOD). The results indicate that the complex [(HTCOD)2]+ x I5- is formed. The I5- unit exists in the form of distorted I2 linked to I3- unit which has two unequivalent I-I bonds. The v(I-I) for I2 occurs at 194 cm(-1) while for I-I, inner and outer bonds in I3- at 143 and 160 cm(-1), respectively.
authors.affiliation: Department of Chemistry, Faculty of Science, Zagazig University, Egypt.
authors.forename: E M
authors.initials: EM
authors.lastname: Nour
mesh_terms: D006573:Heterocyclic Compounds, 1-Ring / Q000737:chemistry*; D007455:Iodine / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013440:Sulfides / Q000737:chemistry*
chemical_list: D006573:Heterocyclic Compounds, 1-Ring; D013440:Sulfides; C408082:1,4,7,10,13,16-hexathiacyclooctadecane; D007455:Iodine