1 Ocak 2009 Dergi makalesi Açık Erişim

Isci, Uemit; Afanasiev, Pavel; Millet, Jean-Marc M.; Kudrik, Evgeny V.; Ahsen, Vefa; Sorokin, Alexander B.

Dublin Core

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  <dc:creator>Isci, Uemit</dc:creator>
  <dc:creator>Afanasiev, Pavel</dc:creator>
  <dc:creator>Millet, Jean-Marc M.</dc:creator>
  <dc:creator>Kudrik, Evgeny V.</dc:creator>
  <dc:creator>Ahsen, Vefa</dc:creator>
  <dc:creator>Sorokin, Alexander B.</dc:creator>
  <dc:date>2009-01-01</dc:date>
  <dc:description>mu-Nitrido-bis [tetra-(hexyl-sulfonyl)phthalocyaninatoiron] (3a) and mu-nitrido-bis [tetra-(tert-butylsulfonyl)phthalocyaninatoiron] (3b) complexes have been prepared and fully characterized by electrospray ionization mass spectrometry, UV-Vis, FTIR, EPR, Mossbauer techniques as well as by X-ray photoelectron and Fe K-edge X-ray absorption spectroscopies. Small changes at the periphery of the phthalocyanine ligand introduce a difference in the iron oxidation state. While 3b with tert-butyl substituents is a neutral complex with a mixed-valence Fe-3.5-N-Fe-3.5 structural unit, 3a having n-hexyl substituents is an oxidized cationic Fe-IV-N-Fe-IV complex. The structural parameters of N-bridged diiron phthalocyanine with a Fe-3.5-N-Fe-3.5 unit were determined for the first time. Iron atoms in 3b are displaced out of plane by 0.24 angstrom and the Fe-N bond distance of the linear Fe-N-Fe fragment is equal to 1.67 angstrom. Both complexes selectively catalyze benzylic oxidation of alkyl aromatic compounds by (BuOOH)-Bu-t. Toluene was oxidized to benzoic acid with 80% selectivity, and the total turnover number was as high as 197. p-Toluic acid was the principal product of p-xylene oxidation. In this case the turnover number achieved 587 substrate molecules per molecule of catalyst. The described catalytic system is complementary to the recently reported system based on mu-nitrido diiron tetrabutylphthalocyanine-H2O2 which effectively oxidizes the benzene ring.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/93697</dc:identifier>
  <dc:identifier>oai:zenodo.org:93697</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>DALTON TRANSACTIONS 36 7410-7420</dc:source>
  <dc:title>Preparation and characterization of mu-nitrido diiron phthalocyanines with electron-withdrawing substituents: application for catalytic aromatic oxidation</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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