Synthesis and crystal structure of Mn(II) complexes with novel macrocyclic Schiff-base ligands containing piperazine moiety |
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| Authors: | Hassan Keypour Majid Rezaeivala Laura Valencia Paulo Prez-Lourido |
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| Institution: | aFaculty of Chemistry, Bu-Ali Sina University, Hamedan 65174, Iran;bDepartamento de Química Inorgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Pontevedra, Spain |
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| Abstract: | A series of Mn(II) macrocyclic Schiff-base complexes MnLnCl]+ (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 MnL2(CH3OH)Cl](ClO4) and MnL4Cl](PF6) complexes have also been determined showing the metal ion in a N4OCl pentagonal bipyramidal or N4Cl highly distorted octahedral geometry, respectively. |
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| Keywords: | Piperazine Asymmetric macrocyclic Schiff base Manganese(II) complexes X-ray crystal structure |
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