Journal
POLYHEDRON
Volume 27, Issue 14, Pages 3172-3176Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2008.07.012
Keywords
Piperazine; Asymmetric macrocyclic Schiff base; Manganese(II) complexes; X-ray crystal structure
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Funding
- Bu-Ali Sina University
- Ministry of Science, Research and Technology of Iran
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A series of Mn(II) macrocyclic Schiff-base complexes [MnL(n)Cl](+) (n = 1-4) have been prepared via the Mn(II) templated [1+1] cyclocondensation of 2,6-diacetylpyridine or 2,6-pyridinedicarbaldehyde with the symmetrical 1,4-bis(3-aminopropyl)piperazine or the novel asymmetrical N,N'(2-aminoethyl)(3-aminopropyl)piperazine linear amines containing piperazine moiety. The complexes have been characterized by elemental analyses, IR, FAB-MS, magnetic studies and conductivity measurements. The crystal structure of [MnL(2)(CH(3)OH)CI](ClO(4)) and [MnL(4)Cl](PF(6)) complexes have also been determined showing the metal ion in a N(4)OCl pentagonal bipyramidal or N(4)Cl highly distorted octahedral geometry, respectively. (C) 2008 Elsevier Ltd. All rights reserved.
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