Synthesis, X-ray characterization and study of new ionic complexes of 2-pyridone, obtained by oxidation with I-2
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Ημερομηνία
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Royal Society of Chemistry
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
New Journal of Chemistry
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The reaction of 2-pyridone (C5H5NO or PYOH) with diiodine in molar ratios of 2 : 1 and 1 : 2 resulted in the formation of complexes {[(PYOH)(3)(PYOH)(+)]center dot I-3(-)} (1) and {{(PYOH)(6)center dot[(PYOH)(2)](2+)}center dot 0.5I(-)center dot 1.5I(7)(-)center dot I-2} (2), respectively. The reactions were carried out in dichloromethane solutions in air. The compounds were characterized by elemental analysis, DTA-TGA chromatography, FT-Raman, FT-IR, UV-vis and EPR spectroscopies. Crystal structures of the named complexes have been determined by X-ray diffraction at 120(1) K (1) and 293(2) K (2). Compound 1, [(C20H20N4O4)I-3], monoclinic, space group C2/c, consists of a cationic PYOH+ radical species and an I-3(-) counter anion; three neutral PYOH molecules are also bound to the complex. The crystal structure of [(C40H40N8O8)I-13] (2) reveals a centrosymmetric P-1 triclinic space group containing two cationic PYOH+ species, with the anionic counterparts being one half I- and three halves I-7(-). Also, a neutral diiodine molecule I-2 is retained by weak halogen-halogen interactions to I-, as well as six neutral PYOH ligands. The structures of 1 and 2 consist of hydrogen-bonded pyridine layers; polyiodide fragments fill the spaces between the layers, additionally kept together by a number of weak C-H center dot center dot center dot I interactions.
Περιγραφή
Λέξεις-κλειδιά
charge-transfer complexes, crystal-structures, molecular-complexes, polyiodide salts, pressure superconductivity, electrical-properties, chemical oxidation, antithyroid drugs, diiodine adducts, ft-raman
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000228744800011
http://pubs.rsc.org/en/content/articlepdf/2005/nj/b417828a
http://pubs.rsc.org/en/content/articlepdf/2005/nj/b417828a
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας