Issue 11, 2005
From the journal:

Dalton Transactions

Asymmetric terminal ligation on substituted sites in a disorder-free Keggin anion, [β-SiFe2W10O36(OH)2(H2O)Cl]5−†

Bogdan Botar,a   Yurii V. Geletii,a   Paul Kögerler,b   Djamaladdin G. Musaev,c   Keiji Morokuma,ac   Ira A. Weinstockd  and  Craig L. Hill*a  

* Corresponding authors

a Department of Chemistry, Emory University, Atlanta, GA 30322, USA
E-mail: chill@emory.edu

b Ames Laboratory, Iowa State University, Ames, IA 50011, USA

c Emerson Center for Scientific Computation, Emory University, Atlanta, GA 30322, USA

d Department of Chemistry, City College of The City University New York, New York, NY 10031, USA

Abstract

A new monomeric diiron β-Keggin derivative, [(CH3)2NH2]5[β-SiFe2W10O36(OH)2(H2O)Cl]·7H2O (1) with non-adjacent substituted sites has been obtained in good yield by reaction of Fe(III) cations with [γ-SiW10O36]8− in aqueous solution. The use of hydrogen bonding counter-cations produced a disorder-free polyanion. This situation facilitates unequivocal identification of the terminal ligands on Fe atoms and interpretation of the magnetic properties, which are also addressed by DFT calculations. Electrochemical studies establish that 1 can be step-wise reduced by two electrons and then reversibly oxidized.

Graphical abstract: Asymmetric terminal ligation on substituted sites in a disorder-free Keggin anion, [β-SiFe2W10O36(OH)2(H2O)Cl]5−

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Article information

DOI
https://doi.org/10.1039/B503665H
Article type
Paper
Submitted
11 Mar 2005
Accepted
26 Apr 2005
First published
09 May 2005

Dalton Trans., 2005, 2017-2021

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Asymmetric terminal ligation on substituted sites in a disorder-free Keggin anion, [β-SiFe2W10O36(OH)2(H2O)Cl]5−

B. Botar, Y. V. Geletii, P. Kögerler, D. G. Musaev, K. Morokuma, I. A. Weinstock and C. L. Hill, Dalton Trans., 2005, 2017 DOI: 10.1039/B503665H

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