• BADEKAI RAMACHANDRA BHAT

      Articles written in Journal of Chemical Sciences

    • Schiff base transition metal complexes for Suzuki–Miyaura cross-coupling reaction

      RASHEEDA M ANSARI BADEKAI RAMACHANDRA BHAT

      More Details Abstract Fulltext PDF

      Schiff base ligand and its complex with iron (Fe), cobalt (Co), nickel (Ni) and copper (Cu) ions were synthesized using 4-aminoacetophenone and salicylaldehyde and characterized. FTIR spectrum shows that bidentate coordination of metal ions with ligand where O, N are electron donating sites of azomethine group. The geometry of the complexeswas deduced from the calculated magnetic moment values and SCXRD analysis. All Complexes were studied for their catalytic activity in Suzuki–Miyaura cross-coupling reaction with Cu–L complex showing excellent coupling yield among others. The catalytic activity data show promising results in coupling efficiency, employing cheap, abundant and green metals.

    • Retraction Note to: Schiff base transition metal complexes for Suzuki–Miyaura cross-coupling reaction

      Rasheeda M Ansari Badekai Ramachandra Bhat

      More Details Abstract Fulltext PDF

      The Editor in Chief has retracted this article because of reports that the results are not reproducible. A thorough investigation was conducted by the Indian Academy of Sciences by the Editor in Chief and Associate Editor. On request of the Editor in Chief, an Associate Editor and his research group tried to reproduce the catalytic activity of the complex C-4 reported in the published paper in the Suzuki-Miyaura reaction as per entry 1 of Table 2 using 4-bromoanisole. They were not able to get the cross-coupled product as reported.

      The authors have been invited to submit a new manuscript for peer review.

      Badekai Ramachandra Bhat has stated on behalf of both authors that they do not agree to this retraction.

    • Thermally stable complexes of Fe(III), Co(II), Ni(II) and Cu(II) with Schiff base derived from 4-aminoacetophenone and salicylaldehyde

      RASHEEDA M ANSARI DILEEP RAMAKRISHNA BADEKAI RAMACHANDRA BHAT

      More Details Abstract Fulltext PDF

      The Schiff base ligand 1-(4-((2-hydroxybenzylidene)amino)phenyl)ethan-1-one, obtained from4-aminoacetophenone and salicylaldehyde, and its complexes with Fe(III), Co(II), Ni(II) and Cu(II) havebeen synthesized. These complexes were characterized by FTIR spectroscopy, elemental, and SCXRDanalysis. FTIR spectra of complexes show the bidentate coordination of metal ions with ligands where O andN are electron-donating sites of the azomethine group. The electronic absorption spectra of these complexesshow the characteristics of absorption bands involved in the Fe, Co, and Ni complexes due to their π→π*,n→π* transitions. Further, the geometry of the complexes was deduced from the calculated magnetic momentvalues and single crystal XRD analysis.

      A Schiff base derived from the condensation reaction between 2-aminoacetophenone and salicylaldehyde was involved in the formation of four different metal complexes, i.e., with Nickel, Cobalt, Iron, and Copper. The synthetic route to forming these complexes followed an easy process, and the complexes were obtained in good yields.

  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.