Synthesis, spectral characterization, and single crystal X-ray structures of a series of manganese-2,2 '-bipyridine complexes derived from substituted aromatic carboxylic acids
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Title |
Synthesis, spectral characterization, and single crystal X-ray structures of a series of manganese-2,2 '-bipyridine complexes derived from substituted aromatic carboxylic acids
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Creator |
PALANISAMI, N
MURUGAVEL, R |
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Subject |
EARTH METAL-IONS
MANGANESE CATALASE WATER ARCHITECTURES COORDINATION MOLECULES LIGANDS CALCIUM STATE Manganese complexes Metal carboxylates Synthesis Spectroscopy X-ray structures |
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Description |
Reaction of [Mn(2,2'-bpy)(2)(OAc)](ClO(4))(H(2)O) with a series of aromatic carboxylic acids yields new Mn(II)carboxylates [Mn(2,2'-bpy)(2)(L)](ClO(4))}(2) (1-3), [Mn(2,2'-bpy)(2)(L)(2)] (4-5) and [Mn(2,2'-bpy)(2)(L)(-H(2)O)]( ClO(4)) (6) (L = 2-aminobenzoate (2-aba) (1), 4-hydroxybenzoate (4-hba) (2), thiophene-2-carboxylate (2-tca) (3), 2-hydroxynapthoate (2-hnapa) (4), 3,5-diisopropylsalicylic acid (dipsa) (5), 2,4, 6-triisopropylbenzoate (tipba) (6)). The new compounds have been characterized with the aid of elemental analysis, spectroscopy, and single-crystal X-ray diffraction studies. Compounds 1-3, which have been synthesized from less bulky carboxylic acids, are dimeric in the solid-state. Compounds 4-6, which are derived from more bulkier aromaric carboxylic acids, exist as monomeric complexes. In the case of 6, where very bulky 2,4,6-triisopropyl benzoic acid is used as the starting material, only one carboxylate ligand binds to the metal, resulting in a cationic complex. Interestingly in all the six complexes, the C-H hydrogen atoms of the 2,2'-bpy ligands are involved in extensive hydrogen bonding with the carboxylate oxygen atoms of the adjacent molecules and hence form non-covalent 1-D or 2-D aggregates in the solid state. (C) 2010 Elsevier B.V. All rights reserved.
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Publisher |
ELSEVIER SCIENCE SA
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Date |
2012-06-26T06:46:24Z
2012-06-26T06:46:24Z 2011 |
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Type |
Article
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Identifier |
INORGANICA CHIMICA ACTA,365(1)430-438
0020-1693 http://dx.doi.org/10.1016/j.ica.2010.09.040 http://dspace.library.iitb.ac.in/jspui/handle/100/14073 |
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Language |
English
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