Keyword Search:

Synthesis and Characterisation of Cobalt(II) Complexes of 3-Hydroxyflavone

Yang, Farina and D. A., Rice (1995) Synthesis and Characterisation of Cobalt(II) Complexes of 3-Hydroxyflavone. Pertanika Journal of Science & Technology, 3 (2). pp. 211-219. ISSN 0128-7680

[img] PDF


The syn theses of diaquabis (3-hydroxyflavonato) cobalt(II) and bis(pyridine) bis (3hydroxyflavonato) cobalt(II) are described. Results from infrared spectra clearly show that the 3-hydroxyflavonato anion forms a chelate through the 3-hydroxy 4-keto groups. The electronic spectra of both complexes indicate that cobalt(II) has an octahedral geometry. Quantitative analyses of the isolated products gave good agreement with calculated values. Magnetic moment measurements show that both compounds are high spin £ cobalt(II) complexes. The powder diffraction pattern of the pyridine adduct gave almost 1:1 correspondence with tTans-bis (pyridine) bis (3-hydroxyflavonato) nickel (II) which has an octahedral geometry. Therefore, it is highly likely that bis(pyridine)bis(3hydroxyflavonato) cobalt(II) is octahedrally co-ordinated with two chelating 3-hydroxyflavonato anions and two pyridine molecules occupying tTans positions.

Item Type:Article
Keyword:cobalt(ll) complex, 3-hydroxyflavonato
Publisher:Universiti Putra Malaysia Press
ID Code:3864
Deposited By: Nasirah Abu Samah
Deposited On:02 Dec 2009 02:54
Last Modified:27 May 2013 07:11

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 02 Dec 2009 02:54.

View statistics for "Synthesis and Characterisation of Cobalt(II) Complexes of 3-Hydroxyflavone"


Universiti Putra Malaysia Institutional Repository is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.
Universiti Putra Malaysia Institutional Repository supports OAI 2.0 with a base URL of
Best viewed using IE version 7.0 (and above) Mozilla Firefox version 3 (and above) with the resolution of 1024 x 768.