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      https://www.ias.ac.in/article/fulltext/jcsc/131/04/0032

    • Keywords

       

      SNS pincer complexes; CO2; catalysts; single crystal X-ray diffraction; density Functional Theory.

    • Abstract

       

      Two novel tridentate SNS pincer type ligands, 2,6-bis[[(2'-methoxyphenyl)thio]methyl]pyridine (L1) and 2,6-bis[[(2'-chlorophenyl)thio]methyl]pyridine (L2), each possessing two sulfur and one nitrogen donor functionalities (SNS), based on 2,6-bis(thioether)pyridine ligands were prepared and metallised with CuCl2 · 2H2O and FeCl2 · 4H2O metal salts. Two new unanticipated complexes were obtained from the L,2 ligand, the dimeric bidentate Cu(I) complex [Cu22−L2)2Cl2] and tridentate Fe(II) complex [Fe(κ3−L2)Cl2] while two new tridentate pincer-type complexes M(κ3-L1)Cl2] (M = Cu, Fe) were formed from the L1 ligand It was observed that the structure of this Cu(I) complex has a tetrahedral geometry using single crystal Xray diffraction analysis. In addition, catalytic properties of metal complexes towards the formation of cyclic carbonates from CO2 and epoxides were investigated. The less sterically hindered Fe(II) complex with theL1 ligand [Fe(κ3−L1)Cl2] (2) showed the best catalytic activity. Several parameters including temperature, time, epoxide identity and CO2 pressure were investigated to find the optimum catalytic reaction conditions. Moreover, DFT studies of these compounds are presented in the study.

    • Author Affiliations

       

      HATICE GAMZE SOGUKOMEROGULLARI1 SERIFE PINAR YALÇIN2 ÜMIT CEYLAN3 EMINE AYTAR4 MUHITTIN AYGÜN5 DARRIN S RICHESON6 MEHMET SÖNMEZ7

      1. Medical Services and Techniques Department, Health Services Vocational School, Gaziantep University, 27310 Gaziantep, Turkey
      2. Department of Physics, Faculty of Arts and Sciences, Harran University, 63000 ¸ Sanlıurfa, Turkey
      3. Department of Medical Services and Techniques, Vocational High School of Health Services, Giresun University, 28100 Giresun, Turkey
      4. Department of Chemistry, University of Harran, 63190 ¸ Sanlıurfa, Turkey
      5. Department of Physics, Faculty of Arts and Sciences, Dokuz Eylül University, 35150 Buca, ˙Izmir, Turkey
      6. Department of Chemistry and Biomolecular Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
      7. Department of Chemistry, Faculty of Science and Arts, Gaziantep University, 27310 Gaziantep, Turkey
    • Dates

       
    • Supplementary Material

       
  • Journal of Chemical Sciences | News

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