Article Sidebar
Published:
May 26, 2008Keywords:
Analytical Studies Iron Manganese Complexes 7-nitroso –8 Hydroxyquinoline -5-
Article Details
Issue
Section
Articles
Copyright of the journal's content belongs to Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
The copyright of a submitted article is only transferred to the publishers if and when the article is accepted for publication. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, mechanical, photocopying, recording or otherwise without the prior written permission of the publishers.
The copyright of a submitted article is only transferred to the publishers if and when the article is accepted for publication. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, mechanical, photocopying, recording or otherwise without the prior written permission of the publishers.
Main Article Content
Analytical Studies of the Iron and Manganese Complexes of 7-Nitroso -8- Hydroxyquinoline -5-Sulphonic Acid
Abstract
The ligand 7-nitroso-8-hydroxyquinoline-5-sulphonic acid (H2L) possesses the coordination sites of 2 -nitroso-1- naphthol and of 8-hydroxyquinoline, where the hydroxyl group is functional at either site. The absorption maximum of the complex formed with iron and Mn is at 700nm, at which wavelength the mole extinction coefficient of Fe(H2L)3 is 27,540 dm3 mol-1 and Mn(H2L)3 is 44,500 dm3 mol-1 respectively. The stoichiometry of H2L reagent with the metal ions by the method of continuous variation gave the ratio of iron to ligand as 1:3 and manganese to Ligand as 1:3. Chemical analysis, and physicochemical evidence are compatible with formulating the Fe(II) and Mn (II) complexes as H[M(HL)3] where the 2-nitroso–1-naphthol site is involved in metal chelation.
Keywords: Analytical Studies, Iron, Manganese, Complexes, 7-nitroso –8, Hydroxyquinoline -5- Sulphonic acid
Journal of Science and Technology Vol. 28 (1) 2008 pp. 76-87
