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

Bogdan Botar; Yurii V. Geletii; Paul Kögerler; Djamaladdin G. Musaev; Keiji Morokuma; Ira A. Weinstock; Craig L. Hill

doi:10.1039/b503665h

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

Bogdan Botar, Yurii V. Geletii, Paul Kögerler, Djamaladdin G. Musaev, Keiji Morokuma, Ira A. Weinstock, Craig L. Hill

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

A new monomeric diiron β-Keggin derivative, [(CH₃) ₂NH₂]₅[β-SiFe₂W ₁₀O₃₆(OH)₂(H₂O)Cl]·7H ₂O (1) with non-adjacent substituted sites has been obtained in good yield by reaction of Fe(III) cations with [γ-SiW₁₀O ₃₆]^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.

Original language	English
Pages (from-to)	2017-2021
Number of pages	5
Journal	Dalton Transactions
Issue number	11
DOIs	https://doi.org/10.1039/b503665h
State	Published - 7 Jun 2005
Externally published	Yes

ASJC Scopus subject areas

Inorganic Chemistry

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

abstract = "A new monomeric diiron β-Keggin derivative, [(CH3) 2NH2]5[β-SiFe2W 10O36(OH)2(H2O)Cl]·7H 2O (1) with non-adjacent substituted sites has been obtained in good yield by reaction of Fe(III) cations with [γ-SiW10O 36]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.",

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doi = "10.1039/b503665h",

language = "English",

pages = "2017--2021",

journal = "Dalton Transactions",

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T1 - Asymmetric terminal ligation on substituted sites in a disorder-free Keggin anion, [β-SiFe2W10O36(OH) 2(H2O)Cl]5-

AU - Botar, Bogdan

AU - Geletii, Yurii V.

AU - Kögerler, Paul

AU - Musaev, Djamaladdin G.

AU - Morokuma, Keiji

AU - Weinstock, Ira A.

AU - Hill, Craig L.

PY - 2005/6/7

Y1 - 2005/6/7

N2 - A new monomeric diiron β-Keggin derivative, [(CH3) 2NH2]5[β-SiFe2W 10O36(OH)2(H2O)Cl]·7H 2O (1) with non-adjacent substituted sites has been obtained in good yield by reaction of Fe(III) cations with [γ-SiW10O 36]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.

AB - A new monomeric diiron β-Keggin derivative, [(CH3) 2NH2]5[β-SiFe2W 10O36(OH)2(H2O)Cl]·7H 2O (1) with non-adjacent substituted sites has been obtained in good yield by reaction of Fe(III) cations with [γ-SiW10O 36]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.

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U2 - 10.1039/b503665h

DO - 10.1039/b503665h

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SP - 2017

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JO - Dalton Transactions

JF - Dalton Transactions

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

Abstract

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