NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(05) [May 2007] >


Title: A new emissive Ru(II)N₅O core
Authors: Drew, Michael G B
Nag, Samik
Datta, Dipankar
Issue Date: May-2007
Publisher: CSIR
IPC CodeInt. Cl. ⁸ C07F15/00
Abstract: From the reaction of cis-Ru(1,10-phenanthroline)₂Cl₂.2H₂O with 2-picolinic acid in 1:1 molar ratio in degassed methanol-water mixture, [Ru(1,10-phenanthroline)₂(2-picolinate)]PF₆.H₂O (1) has been isolated as a red compound by adding excess of NH₄PF₆. Single crystal X-ray crystallography shows that the metal in 1 has an octahedral N₅O coordination sphere. Complex 1 displays ¹MLCT bands in the 400-500 nm region in acetonitrile. Upon excitation at 435 nm, complex 1 gives rise to a broad emis-sion band at 675 nm in acetonitrile at room temperature with a quantum yield of 0.0022. The energy of the MLCT state in 1 is estimated as 1.99 eV. Since, from cyclic voltammetry, the ground state potential of the Ru(II/III) couple in 1 is found to be 1.01 V vs NHE, the potential of the same couple in the excited state is calcu-lated as -0.98 V vs NHE. The emissive state in 1 seems to be the triplet Ru(II) → 1,10-phenanthroline charge transfer state.
Page(s): 764-767
ISSN: 0376-4710
Source:IJC-A Vol.46A(05) [May 2007]

Files in This Item:

File Description SizeFormat
IJCA 46A(5) (2007) 764-767.pdf153.76 kBAdobe PDFView/Open
 Current Page Visits: 597 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 559456 since 06-Feb-2009  Last updated on 30-Jul-2014Webmaster: nopr@niscair.res.in