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One-pot synthesis of new water-soluble binuclear octahedral Ni(II) and mononuclear Ru(II) carbonyl complexes containing 2,6 pyridine dicarboxylic acid

  • P KalaivaniEmail author
  • H Puschmann
  • M V Kaveri
  • T Suresh
  • R PrabhakaranEmail author
Regular Article
  • 49 Downloads

Abstract

An attempt to synthesize mixed geometrical hetero binuclear complexes has been made by reacting 2,6 pyridinedicarboxylic acid with [NiCl2(PPh3)2] and [RuHCl(CO)(PPh3)3]. However, the reaction afforded a mononuclear complex [Ru(dipic)(CO)(PPh3)2].DMF (1) and homo binuclear complex [Ni2(dipic)2(H2O)5].2H2O (2) [dipic = 2,6-pyridinedicarboxylate] respectively. The new complexes (1 and 2) were characterized by elemental analyses, IR, UV-Vis, 1H-NMR and single-crystal X-ray diffraction studies. The complexes 1 and 2 crystallized in the monoclinic P21/c and triclinic P-1 space groups, respectively. Complex 2 displayed a three-dimensional (3D) network with lattice water molecules. The redox behaviour of the complexes was studied by cyclic voltammetry. The DNA and albumin binding studies of the complexes were done by taking CT-DNA and BSA as models. The new complexes exhibited significant binding efficiency with DNA and albumin.

Graphic abstract

A reaction of 2,6 pyridinedicarboxylic acid with [NiCl2(PPh3)2] and [RuHCl(CO)(PPh3)3] resulted in two structurally different complexes [Ru(dipic)(CO)(PPh3)2].DMF (1) and [Ni2(dipic)2(H2O)5].2H2O (2).

Keywords

Ruthenium(II) complex binuclear Ni(II) complex pyridine dicarboxylic acid NMR X-ray crystallography cyclic voltammetry CT-DNA BSA 

Notes

Acknowledgement

The author P. K. gratefully acknowledges Department of Science and Technology (DST-SERB), New Delhi, India (No. SB/FT/CS-056-/2014 dated 12.08.2015) for the financial support.

Supplementary material

12039_2019_1661_MOESM1_ESM.pdf (545 kb)
Supplementary material 1 (PDF 544 kb)

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of Chemistry, Nirmala College for WomenBharathiar UniversityCoimbatoreIndia
  2. 2.Department of ChemistryBharathiar UniversityCoimbatoreIndia
  3. 3.Department of ChemistryDurham UniversityDurhamUK

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