Synthesis and spectroscopic investigations of complexes of lanthanide nitrates with 5-nitroisoquinoline-2-oxide

Rajasekar, N (1987) Synthesis and spectroscopic investigations of complexes of lanthanide nitrates with 5-nitroisoquinoline-2-oxide. In: Proceedings of Indian Academy of Sciences: Chemical Sciences, 99 (3). pp. 137-141.

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Abstract

New complexes of lanthanide nitrates with 5-nitroisoquinoline-2-oxide (NIQNO) of the type $Ln(NIQNO)_3(N0_3)_3$, where Ln = La-Yb and Y have been synthesised and characterised by analyses, conductance, infrared, proton NMR and electronic spectra. The molar conductance and IR data point to the coordinated nature of the nitrate groups in all the complexes studied. IR spectral analysis along with the proton NMR spectra of the ligand and its (diamagnetic) $La^{3+}$ and $Y^{3+}$ complexes unequivocally proves that the coordination of the ligand to the tripositive lanthanide ions taken place through the oxygen of the $N - O$ group. From a comparison of the visible electronic spectral shapes of the $Nd^{3+}$ and $Ho^{3+}$ complexes, a probable coordination number of eight can be assigned to all the complexes.

Item Type:	Journal Article
Publication:	Proceedings of Indian Academy of Sciences: Chemical Sciences
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Keywords:	Lanthanide nitrate complexes;5-nitroisoquinoline-2-oxide;infrared;proton NMR;electronic spectra.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	03 Apr 2008
Last Modified:	22 Oct 2010 10:26
URI:	http://eprints.iisc.ac.in/id/eprint/13628

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