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Rhodium(III) complex with pyrene-pyridyl-hydrazone: synthesis, structure, ligand redox, spectral characterization and DFT calculation

  • Soumitra Dinda
  • Sarat Chandra Patra
  • Sanjib GangulyEmail author
Regular Article
  • 61 Downloads

Abstract

The pyridylhydrazone ligand incorporating a pendant pyrene moiety HL has been synthesized starting from 2-hydrazinopyridine and its coordinating behaviour towards rhodium(III) have been scrutinized. The complex of type [\(\hbox {Rh}{} \mathbf{L}(\hbox {PPh}_{3})_{2} \hbox {Cl}_{2}\)], incorporating five-membered chelate ring has been isolated and the structure has been authenticated by single-crystal X-ray diffraction study. The ligand exhibits an oxidative response at \(\sim \)1.2 V upon coordination with rhodium(III) and the optoelectronic properties as well as theoretical exploration have been performed by the density functional theory (DFT) as well as time-dependent density functional theory (TD-DFT) analyses.

Graphical Abstract

A new rhodium complex [\(\hbox {RhL} (\hbox {PPh}_{3})_{2} \hbox {Cl}_{2}\)] incorporating monoanionic polycyclic aromatic hydrocarbon (PAH) based hydrazone ligand were synthesized and the optoelectronic properties were explored.

Keywords

Polycyclic aromatic hydrocarbon (PAH) hydrazone photoluminescence redox activity 

Notes

Acknowledgements

We are thankful to the State Council for Science and Technology, West Bengal (Grant No. 683(Sanc.)/ST/P/S&T/4G-11/2014) for their financial support. We express our deep sense of gratitude to Prof. Kausikisankar Pramanik of Jadavpur University for permitting us to use all the instrumental facilities of his laboratory. Grants from DST-FIST for the instrumental facility in SXC are gratefully acknowledged. We express our sincere thanks to the Department of Science and Technology, New Delhi, India for the data collection on the CCD facility setup (Jadavpur University). S. Dinda acknowledges WBDST for his research fellowship. S. C. Patra thanks UGC, New Delhi (No. F. 4-2/2006(BSR)/CH/15-16/0173) for his fellowship.

Supplementary material

12039_2019_1598_MOESM1_ESM.pdf (971 kb)
Supplementary material 1 (pdf 970 KB)

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of ChemistrySt. Xavier’s College (Autonomous)KolkataIndia
  2. 2.Department of ChemistryJadavpur UniversityKolkataIndia

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