Chattopadhyay, Surajit ; Basu, Partha ; Ray, Debashis ; Pal, Samudranil ; Chakravorty, Animesh (1990) Ferroverdin: cation variation and recognition of isomerictris chelate geometries by iron oxidation states Proceedings of the Indian Academy of Sciences - Chemical Sciences, 102 (3). pp. 195-202. ISSN 0253-4134
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Official URL: http://www.ias.ac.in/j_archive/chemsci/102/4/195-2...
Related URL: http://dx.doi.org/10.1007/BF02841933
Abstract
Synthetic ferroverdins, NaFe11(RQ)3 afford trinuclear M[Fe(RQ)3]2 upon reaction with bivalent ions (M2+). A probable bonding mode is considered. Ferric ions oxidise ferroverdin to ferriverdin, FeIII(RQ)3. Both fac and mer isomers can be observed for ferro- and ferriverdins but at equilibrium the preferred isomers are fac for ferro- and mer for ferriverdin. Mismatch in geometry with oxidation state gets spontaneously corrected by isomerisation. Equilibrium constants, isomerisation rates, redox potentials and EPR spectra are examined. A study on the pattern of isomer population as a function of oxidation for other 3d analogues of ferro- and ferriverdin is initiated.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Ferroverdin; Ferriverdin; Trinucleation; Redox Regulated Isomerism |
| ID Code: | 6878 |
| Deposited On: | 26 Oct 2010 05:17 |
| Last Modified: | 16 May 2016 17:09 |
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