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Synthesis, Crystal Structure, and Magnetic Properties of a Novel Trinuclear Mixed-Valence Oxo-Bridged Manganese Complex Formed by Ligand-Substituted Reaction Mn3O(ClC6H5CO2)2(CH3C6H5CO2)4(3-Methylpyridine) 0.5CH3CN
Yan, B. Synthesis, Crystal Structure, and Magnetic Properties of a Novel Trinuclear Mixed-Valence Oxo-Bridged Manganese Complex Formed by Ligand-Substituted Reaction Mn3O(ClC6H5CO2)2(CH3C6H5CO2)4(3-Methylpyridine) 0.5CH3CN Chemical Papers, Vol.57, No. 2, 2003, 102-107
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n572a102.pdf
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572a102.pdf |
application/pdf |
216.23KB |
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| Author(s) |
Yan, B.
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| Title |
Synthesis, Crystal Structure, and Magnetic Properties of a Novel Trinuclear Mixed-Valence Oxo-Bridged Manganese Complex Formed by Ligand-Substituted Reaction Mn3O(ClC6H5CO2)2(CH3C6H5CO2)4(3-Methylpyridine) 0.5CH3CN
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| Journal name |
Chemical Papers
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| Publication date |
2003
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| Year available |
2003
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| Volume number |
57
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| Issue number |
2
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| ISSN |
0366-6352
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| Start page |
102
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| End page |
107
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2003
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| Language |
english
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| Subject |
250000 Chemical Sciences
250300 Organic Chemistry
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| Abstract/Summary |
A trinuclear mixed-valence oxo-centred manganese complex has been synthesized by carboxylic acid-substituted reaction in CH3CN solution Mn3O(ClC6H5CO2)2(CH3C6H5CO2)4(3- Methylpyridine) · 0.5CH3CN. It is a novel trinuclear Mn complex with mixed carboxylate bridge. The title complex crystallizes in the orthorhombic system, space group Pbca, with unit cell dimensions a = 22.548(5) Å, b = 23.070(5) Å, c = 24.321(3) Å, V = 12651(5) Å3, Z = 4, R1 = 0.0755, and wR2 = 0.1627. The crystal structure shows an oxo-centred Mn3O unit with peripheral ligands provided by two different bridging carboxylic acids ligands (m-chlorobenzoic acid and m-methylbenzoic acid) and terminal 3-methylpyridine group. The variable temperature magnetic susceptibility (1.8—300 K) for the title complex has been measured and interpreted in terms of the Kambe vector-coupling method and Van Vleck equation, and the values of J, J', and g are −8.42 cm−1, −10.37 cm−1, and 2.04 cm−1, respectively. This indicates a weak antiferromagnetic exchange coupling among the manganese ions for the complex.
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