In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2007, No. 20 ( 2007-07), p. 3179-3187
Abstract:
The electrochemical properties of the bis(μ‐acetato) complex [Mn 2 II (O 2 CCH 3 ) 2 (tpa) 2 ] 2+ ( 1 2+ ) [tpa = tris(2‐methylpyridyl)amine] in an organic medium (CH 3 CN) have been studied. Two successive controlled potential oxidations of a solution of 1 2+ at 0.7 and 1.1 V vs. Ag/Ag + (10 m M ) allow the selective and nearly quantitative formation of the mono‐(μ‐oxo) mono‐(μ‐acetato) complex [Mn 2 III (O)(O 2 CCH 3 )(tpa) 2 ] 3+ ( 2 3+ ) and the bis(μ‐oxo) complex [Mn 2 IV (O) 2 (tpa) 2 ] 4+ ( 3 4+ ), respectively. These results show that each substitution of an acetate group by an oxo group is caused by an overall two‐electron oxidation of the corresponding dimanganese complex. The associated electrochemical back transformations were also investigated. Complex 2 3+ , which possesses a rare mono‐(μ‐oxo) mono‐(μ‐acetato) motif, has been isolated and characterized by X‐ray crystallography. This complex crystallizes in the monoclinic system, space group P 2 1 / n with a = 11.9899(17), b = 35.050(5), c = 12.3952(18) Å, β = 101.218(6)°, Z = 4. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2007:20
DOI:
10.1002/ejic.200601089
Language:
English
Publisher:
Wiley
Publication Date:
2007
detail.hit.zdb_id:
1475009-0
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