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. Bothfac andmer isomers can be observed for ferro- and ferriverdins but at equilibrium the preferred isomers arefac for ferro- andmer 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.
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References
Basolo F, Hayes J C and Newmann H 1953J. Am. Chem. Soc. 75 5102
Basu P, Bhanja Choudhury S, Pal S and Chakravorty A 1989aInorg. Chem. 28 2680
Basu P, Pal S and Chakravorty A 1989bJ. Chem. Soc., Chem. Commun. 977
Basu P, Pal S and Chakravorty A 1989cJ. Chem. Soc., Dalton Trans. (in press)
Baudisch O 1940Science 92 336
Bleaney B and O’Brien M C M 1956Proc. Phys. Soc. London B69 1216
Bond A M, Colton R and Kevekordes J E 1986Inorg. Chem. 25 749
Bursten B E 1982J. Am. Chem. Soc. 104 1299
Candeloro S, Grdenic’ D, Taylor N, Thompson B, Viswamitra M and Hodgkin D C 1969Nature (London) 224 589
Chain E B, Tonolo A and Carilli A 1955Nature (London) 176 645
Charalambous J, Haines L I B, Morgan J S, Peat D S, Campbell M J M and Baily J 1987Polyhedron 6 1027
Cronheim G 1947J. Org. Chem. 12 1
Ehrenberg A 1956Nature (London) 178 379
Griffith J S 1961The theory of transition metal ions (Cambridge: University Press) p. 364
Lahiri G K, Bhattacharya S, Ghosh B K and Chakravorty A 1987Inorg. Chem. 26 4324
Mingos DM P 1979J. Organomet. Chem. 179 C29
Pal S, Melton T, Mukherjee R N, Chakravarty A R, Tomas M, Falvello L R and Chakravorty A 1985Inorg. Chem. 24 1250
Pal S, Mukherjee R N, Tomas M, Falvello L R and Chakravorty A 1986Inorg. Chem. 25 200
Pal S and Chakravorty A 1987Inorg. Chem. 26 4331
Ray D and Chakravorty A 1988Inorg. Chem. 27 3292
Serpone N and Bickley D G 1972Prog. Inorg. Chem. 17 391
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Chattopadhyay, S., Basu, P., Ray, D. et al. Ferroverdin: Cation variation and recognition of isomerictris chelate geometries by iron oxidation states. Proc. Indian Acad. Sci. (Chem. Sci.) 102, 195–202 (1990). https://doi.org/10.1007/BF02841933
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DOI: https://doi.org/10.1007/BF02841933