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