Abstract
:. The complexes of Mn, Cu, Zn, Pd and Pt with a nitrogen-oxygen donor macrocyclic ligand, viz. 5,6,13,14-dibenzo[1,4,8,11]dioxadiaza-5,7,11,13-cyclotetradecin have been synthesized and characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, spectral and electrochemical studies. The molar conductance measurements of the complexes in DMF solution correspond to non electrolytic nature for M(L)X 2 complexes and 1 : 2 electrolytes for M'(L)X 2 complexes [where M = Mn II , Cu; M' = Zn, Pd and Pt; X = Cl- , NO - 3 and L = ligand]. Thus, the complexes may be formulated as [M(L)X 2 ] and [M'(L)]X 2 respectively. Mn, Cu complexes were of the high-spin type whereas the complexes of Zn, Pd and Pt were diamagnetic. On the basis of spectral studies an octahedral geometry has been assigned for Mn, tetragonal for Cu, tetrahedral for Zn complexes whereas square planar for Pd and Pt complexes.
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