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Please use this identifier to cite or link to this item: http://purl.org/purl/4707

Title: Syntheses, EPR spectral studies and crystal structures of manganese(II) complexes of neutral N,N donor bidentate Schiff bases and azide/thiocyanate as coligand
Authors: Prathapachandra Kurup, M R
Sreesha, Sasi
Sithambaresan, M
Fun, H K
Keywords: Crystal structure
Schiff bases
Mn(II) complex
EPR spectra
Issue Date: 2010
Publisher: Elsevier
Abstract: Four manganese(II) complexes Mn2(paa)2(N3)4 (1), [Mn(paa)2(NCS)2] 3/2H2O (2), Mn(papea)2(NCS)2 (3), [Mn(dpka)2(NCS)2] 1/2H2O(4) of three neutral N,N donor bidentate Schiff bases were synthesized and physico- chemically characterized by means of partial elemental analyses, electronic, infrared and EPR spectral studies. Compounds 3 and 4 were obtained as single crystals suitable for X-ray diffraction. Compound 4 recrystallized as Mn(dpka)2(NCS)2. Both the compounds crystallized in the monoclinic space groups P21 for 3 and C2/c for 4. Manganese(II) is found to be in a distorted octahedral geometry in both the monomeric complexes with thiocyanate anion as a terminal ligand coordinating through the nitrogen atom. EPR spectra in DMF solutions at 77 K show hyperfine sextets with low intensity forbidden lines lying between each of the two main hyperfine lines and the zero field splitting parameters (D and E) were calculated.
Description: Polyhedron 29 (2010) 2643–2650
URI: http://dyuthi.cusat.ac.in/purl/4707
Appears in Collections:Dr. M.R.Prathapachandra Kurup

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