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https://www.ias.ac.in/article/fulltext/jcsc/127/04/0597-0608

Nickel(II) complexes; X-ray structure; Kumada-Corriu reaction; Suzuki reaction; Sonogashira reaction.

Nickel(II) complexes containing thiosemicarbazone ligands [Ni(L)₂] (1-3) (L = 9,10-phenanthrenequinonethiosemicarbazone (HL₁), 9,10-phenanthrenequinone-N-methylthio semicarbazone (HL₂) and 9, 10-phenanthrenequinone-N-phenylthiosemicarbazone (HL₃)) have been synthesized and characterized by elemental analysis and spectroscopic (IR, UV-Vis, ¹H, ¹³C-NMR and ESI mass) methods. The molecular structures of complexes 1 and 2 were identified by means of single-crystal X-ray diffraction analysis. The analysis revealed that the complexes possess a distorted octahedral geometry with the ligand coordinating in a uni-negative tridentate ONS fashion. The catalytic activity of complexes towards some C–C coupling reactions (viz., Kumada-Corriu, Suzuki-Miyaura and Sonogashira) has been examined. The complexes behave as efficient catalysts in the Kumada-Corriu and Sonogashira coupling reactions rather than Suzuki-Miyaura coupling.

Panneerselvam Anitha¹ Rajendran Manikandan¹ Paranthaman Vijayan¹ Govindan Prakash¹ Periasamy Viswanathamurthi¹ Ray Jay Butcher²

1. Department of Chemistry, Periyar University, Salem 636011, Tamil Nadu, India
2. Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA

Published

April 2015

Manuscript received

23 July 2014

Manuscript revised

28 November 2014

Accepted

28 November 2014

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